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Journal articles on the topic 'Cyclocephala'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Dias, Bruno Mateus Ribeiro, and Sérgio Roberto Rodrigues. "Floral association of adult Cyclocephala tucumana Brethes and Cyclocephala melanocephala (Fabricius) with passion flowers (Passiflora edulis Sims)." EntomoBrasilis 11, no. 2 (August 31, 2018): 144–46. http://dx.doi.org/10.12741/ebrasilis.v11i2.738.

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Abstract. Adults of Cyclocephala tucumana Brethes and Cyclocephala melanocephala (Fabricius) were sampled in yellow passionflower flowers, being the first record of C. tucumana associated with flowers of this plant.Associação floral de adultos de Cyclocephala tucumana Brethes e Cyclocephala melanocephala (Fabricius) com flores de maracujá (Passiflora edulis Sims)Resumo. Adultos de Cyclocephala tucumana Brethes e Cyclocephala melanocephala (Fabricius) foram amostrados em flores de maracujá amarelo, sendo o primeiro registro de C. tucumana associada com flores dessa planta.

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2

NEITA-MORENO, JHON C. "A review of the black species of Cyclocephala Dejean (Coleoptera: Scarabaeidae: Dynastinae) from Colombia." Zootaxa 5026, no. 1 (August 24, 2021): 1–58. http://dx.doi.org/10.11646/zootaxa.5026.1.1.

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The black species of the genus Cyclocephala Dejean (Coleoptera: Scarabaeidae: Dynastinae: Cyclocephalini) from Colombia are reviewed. I define species groups based on the morphology of adults, re-describe those species occurring in Colombia, describe two new species (Cyclocephala santandereana new species and Cyclocephala arhuacana new species), list the species reported for Colombia, provide a key to identify groups and the species within each group, and present species distribution and life history data. This review includes the Cyclocephala cribrata species group previously defined with C. boucheri Dechambre, C. carbonaria Arrow, C. cribrata Burmeister, C. dechambrei Dupuis, C. boliviana Dechambre, C. dilatata (Prell), C. ergastuli Dechambre, C. latipennis Arrow, C. marqueti Dechambre, C. proxima Dechambre, C. rogerpauli Moore, Branham, & Cave, and C. variolosa Burmeister. The Cyclocephala fasciolata species group contains C. abrelata Ratcliffe & Cave, C. brevipennis Endrödi, C. fasciolata Bates, C. melane Bates, and Cyclocephala santandereana new species. The Cyclocephala ligyrina species group has C. arhuacana new species, C. dalensi Ponchel, C. dyscinetoides Dechambre, C. endroedyyoungai Endrödi, C. kaszabi Endrödi, C. ligyrina Bates, Cyclocephala nigerrima Bates, C. rufa Endrödi, and C. scarabaeina (Gyllenhal). Cyclocephala carinatipennis Martínez & Morón is proposed as a new junior synonym of C. rufa Endrödi. A larva of the Cyclocephala cribrata species group is described for the first time. An analysis of the characters of the adults and the described larva of the species group is performed to imply phylogenetic implications. New country records of C. dalensi and C. marqueti are recorded for Colombia.

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3

Abarca, Giselle, and Miguel Quesada. "Especies del complejo de jobotos (Phyllophaga spp., Anomala spp y Cyclocephala spp.) asociadas a cultivos, en el Valle Central y Pacífico seco de Costa Rica." Agronomía Mesoamericana 8, no. 2 (June 1, 2016): 44. http://dx.doi.org/10.15517/am.v8i2.24655.

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During 1990 and 1992 speciesofthe white grubs complex Phyllophaga, Anomala and Cyclocephala) were found associated to agricultural crops and to different groups of soils, in cultivated arcas of the Central Valley and Dry Pacific of CostaRica.White grubs raster and male genital, observed with the scanning electron microscope (SEM), were used to identify genera and species. Larvae and adults were identified as Phyllophaga menetriesi, P. obsoleta, P. zunilensis, P. elenans, P. vicina and P. valeriana; Cyclocephala lunulata, C. castaniella and C. sanguinicollis; and Anomala cupricollis and A. granulipyga. The distribution in agricultural crops was: P. menetriesi and P. vicina on coffee (Coffea arabica); P. menetriesi on asparagus (Asparagus officinalis); P. menetriesi, P. obsoleta, P. zunilensis, Anomala spp., Cyclocephala spp., Cyclocephala lunulata on strawberry (Fragaria anannas); P. zunilensis, P. elenans on sugar cane (Saccharum officinarum); P. valeriana on potatoe (Solanum tuberosum) and tomatoe (Lycopersicon esculentum); P. obsoleta, C. castaniella, C. sanxuinicollis and A. granulipyga on kikuyu grass (Penissetum clandestinum) P. menetriesi larvae were found in Andisols grand groups: Melanudands, Hapludands and Haplustands. P. obsoleta in the Melanudands grand group. P. vicina in Hapludands. P. valeriana in the Inceptisols grand group of Ustropepts. Anomala spp. in Hapludands and Cyclocephala spp. in Hapludands and Melanudands.

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4

Gibernau, Marc, and Denis Barabé. "Pollination ecology of Philodendron squamiferum (Araceae)." Canadian Journal of Botany 80, no. 3 (March 1, 2002): 316–20. http://dx.doi.org/10.1139/b02-006.

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In French Guiana, inflorescences of Philodendron squamiferum Poepp. (Araceae) were regularly visited by the scarab beetle Cyclocephala simulatrix Hölne and (Scarabaeidae, Coleoptera) occasionally by Cyclocephala tylifera Hölne. The flowering cycle lasted 2 days, and the protogynous inflorescence exhibited features typical of beetle pollination (floral chamber, food rewards, flower heating). The spadix temperature was measured during the entire flowering cycle in French Guiana and at the Montreal Botanical Garden. Both sets of measurements gave a similar temperature pattern. The spadix warmed up twice at the beginning of each evening with no notable heat production between the two peaks. These two temperature peaks were well synchronized with the arrival and departure of beetles.Key words: beetle pollination, Cyclocephala, Dynastidae, floral traits, thermogenesis, French Guiana.

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5

Nogueira, Gerson Aler de Lima, Sérgio Roberto Rodrigues, and Elison Floriano Tiago. "Biological aspects of Cyclocephala tucumana Brethes, 1904 and Cyclocephala melanocephala (Fabricius, 1775) (Coleoptera: Scarabaeidae)." Biota Neotropica 13, no. 1 (March 2013): 86–90. http://dx.doi.org/10.1590/s1676-06032013000100009.

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The studies were conducted on the biological aspects of Cyclocephala tucumana Brethes, 1904 and C. melanocephala (Fabricius, 1775) in Aquidauana, MS, Brazil. From January to December 2009 a light trap was installed to make collections of adults of C. tucumana and from January 2010 to February 2011 for collections of adults of C. melanocephala, at the experimental farm of the Universidade Estadual de Mato Grosso do Sul. Adults were maintained in plastic containers with soil and complete plants of Brachiaria decumbens Stapf cv. Basilisk to oviposition and start biological studies. Adults of C. tucumana were collected from September to November in the field; the embryonic period lasted on average 14.7 days, and the first, second and third larval instars lasted 47.7, 66.1 and 78.6 days, respectively. Pre-pupa and pupa phases lasted 98.2 and 15.1 days, respectively, and longevity of the adults was 13.3 days. From the egg to adult stage of C. tucumana was a period of average 211.2 days. Adults of C. melanocephala were collected from September to October 2010 and February 2011. The embryonic period lasted 17.8 days, and larvae in the first, second and third instars lasted 22.3, 21.0 and 27.0 days, respectively. The pre-pupa stage lasted 11.3 days and pupa phase lasted 13.3 days. The longevity of adults was 26 days, and the cycle from egg to adult lasted 113 days.

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6

Cavalcante, Tadeu Robson Melo, Ronaldo Veloso Naves, Edivani Villaron Franceschinelli, and Ricardo Pereira da Silva. "Polinização e formação de frutos em araticum." Bragantia 68, no. 1 (2009): 13–21. http://dx.doi.org/10.1590/s0006-87052009000100002.

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O araticum, Annona crassiflora Mart., é fruta típica do Cerrado brasileiro, com potencial econômico e alimentar, entretanto, há baixa produção. O objetivo deste trabalho foi avaliar o sistema reprodutivo do araticum e identificar seus possíveis polinizadores. O experimento foi desenvolvido no Estado de Goiás, Brasil, nos municípios de Goiânia, a 6° 35' 56,0" S 49° 16' 44,4" O; 727 m e Vila Propício, a 15°15' 37,0" S 48(0) 42' 30,9" O; 696 m, em 2004 e 2005. O delineamento foi em blocos ao acaso com quatro tratamentos: polinização cruzada manual (T1); polinização natural (T2); autopolinização espontânea (T3) e autopolinização manual (T4). A viabilidade do pólen foi checada usando carmim acético a 1%. Em 2004, as porcentagens de frutos formados em Goiânia foram de 39,46%; 0% e 0% em T1, T2 e T3, respectivamente. Em Vila Propício foram: 31,11%; 4,65% e 0% em T1, T2 e T3 respectivamente. Em 2005, as porcentagens de frutos formados em Goiânia foram de 64,24%; 4,72%, 0% e 34,38%, em T1, T2, T3 e T4 respectivamente. Em Vila Propício, três espécies de besouros foram coletados nas flores de araticum e identificados como: Cyclocephala atricapilla Mannerheim, Cyclocephala latericia Hohne e Cyclocephala octopunctata Burmeister. Em Goiânia, somente Cyclocephala octopunctata foi coletado. A polinização cruzada manual resultou em alta frutificação. O araticum é espécie autocompatível, mas principalmente alogâmica.

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Paulino-Neto, Hipólito Ferreira. "Polinização e biologia reprodutiva de Araticum-liso (Annona coriacea Mart.: Annonaceae) em uma área de cerrado paulista: implicações para fruticultura." Revista Brasileira de Fruticultura 36, spe1 (2014): 132–40. http://dx.doi.org/10.1590/s0100-29452014000500016.

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Anonáceas, em geral, são espécies cantarófilas e altamente especializadas, apresentando pétalas espessas, carnosas e nutritivas que formam uma câmara floral com ocorrência de termogênege. Este estudo objetivou verificar os efetivos polinizadores e sistema reprodutivo prevalente em A. coriacea. Flores foram marcadas e acompanhadas durante períodos do dia e da noite para verificar os polinizadores legítimos. Tratamentos de polinização manual foram realizados para determinar o sistema reprodutivo. Besouros escarabeídeos Cyclocephala atricapilla e Cyclocephala quatuordecimpunctata (Dynastinae) foram atraídos pelo odor emitido pelas flores no início da noite já contendo pólen em seus corpos e penetraram na câmara floral, onde permaneceram por até 48h alimentando-se das pétalas e de pólen, copulando, e ao tocarem nos estigmas receptivos, depositaram pólen. Posteriormente, flores em fase masculina liberaram pólen que novamente sujou o corpo dos besouros e, com a queda da flor, voaram para outra flor recém-aberta e em fase feminina, iniciando novo ciclo de polinização. A. coriacea é uma espécie autocompatível e Cyclocephala foram polinizadores muito eficientes.

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8

Vargas, Edgar, and Giselle Abarca. "Relación entre el estrés y las bacterias entomopatógenas Pantoea (Erwinia) agglomerans (herbicola) y Bacillus cereus en jobotos (Col: Melolonthidae) (Phyllophaga spp., Anomala spp. y Cyclocephala spp.), en Costa Rica." Agronomía Mesoamericana 9, no. 2 (May 30, 2016): 25. http://dx.doi.org/10.15517/am.v9i2.19466.

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Concentrations of Colony Forming Units (CFU) were determined for two entomopathogenic bacteria (Pantoea agglomerans and Bacillus cereus), at the egg, larval, pupal, and adult stages of agriculturally important Phyllophaga and Cyclocephala white grubs, which were collected in five agroecosystems in Costa Rica. L2 and L3 larvae of Phyllophaga elenans collected in all regions where the study was conducted were extensive carriers of Pantoea agglomerans and Bacillus cereu. L2 and L3 larvae of Phyllophaga obsoleta, Phyllophaga menetriesi, Cyclocephala sanguinicollis and Cyclocephala castaniella found in the Central Valley and Central Pacific regions were carriers of Pantoea agglomerans and Bacillus cereus bacteria. In 60% to 90% of larvae in all white grub varieties studied, Pantoea agglomerans showed greater concentrations of CFU than Bacillus cereu, which showed the lowest CFU concentration. Egg, pupal, and adult mortality in all Phyllophaga species was due to Pantoea agglomerans in 62%, 80% and 22.5% of the cases, respectively. A possible antagonistic interaction between Pantoea agglomerans and Bacillus cereus is also discussed. In general, it was noted that light and larval manipulation were the main stress factors affecting these scarabids.

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9

Santos, Viviane, and Crébio José Ávila. "ASPECTOS BIOECOLÓGICOS DE Cyclocephala forsteri ENDRODI, 1963 (COLEOPTERA: MELOLONTHIDAE) NO ESTADO DO MATO GROSSO DO SUL." BRAZILIAN JOURNAL OF AGRICULTURE - Revista de Agricultura 82, no. 3 (November 26, 2015): 298. http://dx.doi.org/10.37856/bja.v82i3.1470.

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10

Bran, Alejandra María, Martha Eugenia Londoño, and Luis Carlos Pardo. "Morfología de estados inmaduros de tres especies de Cyclocephala (Coleoptera: Melolonthidae) con una clave para larvas de tercer estado en Colombia." Corpoica Ciencia y Tecnología Agropecuaria 7, no. 2 (January 4, 2007): 58. http://dx.doi.org/10.21930/rcta.vol7_num2_art:71.

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<p>Las larvas de algunas especies de escarabajos rizófagos constituyen un serio problema fitosanitario en varias regiones agrícolas de Colombia; conforman comunidades en las que ocurren especies dañinas e inocuas cuya similitud morfológica aparente dificulta su diferenciación y limita el diagnóstico en campo. A fin de aportar soluciones a esta situación se realizaron muestreos de larvas del género <em>Cyclocephala</em>, uno de los más frecuentes en los cultivos de seis municipios de Antioquia y uno de Caldas (Colombia). Las larvas obtenidas se criaron y codificaron individualmente para facilitar la observación de su desarrollo hasta el estado de adulto y hacer una identificación positiva. Se colectaron en total 82 larvas representativas de <em>Cyclocephala fulgurata, C. lunulata </em>y <em>C. gregaria</em>, de las cuales se describen caracteres e ilustran estructuras diagnósticas. A partir de una matriz de 70 caracteres se seleccionaron seis (relativos a la quetotaxia craneal, la maxila y el tarsúngulo) que hicieron posible elaborar una clave para identificar las larvas de tercer estadio del género.</p><p><strong> </strong></p><p><strong>Morphology of immature stages of three species of Cyclocephala and taxonomic key to third-instar larvae (Coleoptera: Melolonthidae) in Colombia</strong></p><p>Some larvae species of rhizophagous beetles constitute themselves in a serious phytosanitary problem in several agricultural regions of Colombia as they conform communities, both harmful and innocuous, but apparent morphologic similarities makes it difficult to differentiate them, limiting the field diagnosis. To contribute to the study of this problem, samplings of one of the most abundant collected species, Cyclocephala larvae, were made, in crops of six towns of Antioquia and one of Caldas. To facilitate positive adult observation, larvae were individually numbered. In all, eighty two larvae of Cyclocephala fulgurate, C. lunulata and C. gregarious were collected and their characteristic and diagnostic features described and illustrated. From a matrix of seventy characters, six cranial quetotaxic, maxilar and tarsungular characters were used to make a taxonomic key to identify the third-instar larvae.</p>

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Ber�n, Corina M., and Beatriz M. Diaz. "Pathogenicity of hyphomycetous fungi against Cyclocephala signaticollis." BioControl 50, no. 1 (February 2005): 143–50. http://dx.doi.org/10.1007/s10526-004-0586-x.

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12

Zermoglio, Paula F., Marcela K. Castelo, and Claudio R. Lazzari. "Endothermy in the temperate scarab Cyclocephala signaticollis." Journal of Insect Physiology 108 (July 2018): 10–16. http://dx.doi.org/10.1016/j.jinsphys.2018.04.012.

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13

García-Robledo, Carlos, Gustavo Kattan, Carolina Murcia, and Paulina Quintero-Marín. "Beetle pollination and fruit predation of Xanthosoma daguense (Araceae) in an Andean cloud forest in Colombia." Journal of Tropical Ecology 20, no. 4 (July 2004): 459–69. http://dx.doi.org/10.1017/s0266467404001610.

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This study describes a pollination system in a species of Araceae that involves three species of beetle, one of which is also a fruit predator. In a tropical cloud forest in Colombia, inflorescences of Xanthosoma daguense opened at dusk, releasing a sweet scent and raising their temperature 1–3 °C. Soon after, two species of Scarabaeidae (Dynastinae; Cyclocephala gregaria and C. amblyopsis) and one species of Nitidulidae (Macrostola costulata) arrived with pollen. Cyclocephala beetles remained inside the inflorescence for 24 h. The next night, Cyclocephala beetles left the inflorescence after picking up the freshly shed pollen, almost always moving to the nearest inflorescence available. The probability of inflorescence abortion and number of fruits set after the visit of one individual was equivalent for both Cyclocephala species. However, C. gregaria was much more abundant than C. amblyopsis, so it was the most important pollinator. There was a positive relationship between the number of dynastine visits and the number of fruits produced. Besides carrying pollen to the inflorescences, nitidulid beetles had a negative effect on female reproductive success through fruit predation. Nitidulid larvae developed inside the infructescence and preyed on up to 64% of the fruits. However, 8% of inflorescences not visited by dynastines were probably pollinated by nitidulids, because hand-pollination experiments showed that self-pollination was unlikely. Inflorescences potentially pollinated by nitidulids comprised 25% of the fruit crop in the year of our study. This interaction with a fruit predator that is also a potential pollinator resembles brood-site pollination systems in which pollinators prey on part of the fruit set (e.g. Ficus, senita cacti, Yucca), making this system substantially more complex than previously described dynastine-pollinated systems in aroids.

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Salgado-Neto, Geraldo, Marcos André Braz Vaz, Jerson Vanderlei Carús Guedes, Marlove Fátima Brião Muniz, and Elena Blume. "Fusarium oxysporum dispersion by larvae of Cyclocephala modesta, Dyscinetus gagates and Diloboderus abderus in Brazil." Ciência Rural 46, no. 6 (June 2016): 943–49. http://dx.doi.org/10.1590/0103-8478cr20150471.

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ABSTRACT: The scientific and economic importance of soybean root rot justifies the study of this disease, especially the role of insects as dispersers in the spread of root pathogens. The objective was to identify and evaluate qualitatively and quantitatively the role of Cyclocephala modesta, Dyscinetus gagatesand Diloboderus abderus(Coleoptera: Melolonthidae) in the dispersion of root pathogens in cultivated fields. The fungi were identified to the species level with DNA extraction and sequencing of these organisms within Melolonthidae larvae. Larvae were dissected and separated into the parts: mouth parts, prothorax, cuticle and digestive tract (alimentary canal). The Internal Transcribed Spacer region of the rRNA was amplified and compared to sequences deposited in GenBank. This is the first record of dispersion Fusarium oxysporumby Cyclocephala modesta, Dyscinetus gagatesand Diloboderus abderus (Coleoptera: Melolonthidae) under soybean in Brazil.

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Noble, Ryan R. P., Stephanie G. Harvey, and Carl E. Sams. "Toxicity of Indian Mustard and Allyl Isothiocyanate to Masked Chafer Beetle Larvae." Plant Health Progress 3, no. 1 (January 2002): 9. http://dx.doi.org/10.1094/php-2002-0610-01-rs.

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Alternatives for control of soil-inhabiting pests are needed due to the phase-out of methyl bromide. One possible alternative is using the pesticidal properties of compounds released by macerated Brassica tissues. In this study, larvae of masked chafer beetles (Cyclocephala spp.) were placed in soil amended with Brassica juncea L. (PI 458934) tissue. Allyl isothiocyanate (AITC) levels were positively correlated to larval mortality, with the 8% B. juncea treatment resulting in 100% larval mortality with an average AITC concentration of 11.4 mg per liter of soil atmosphere. Although B. juncea produces high levels of AITC, the mass of tissue required for significant insecticidal activity against Cyclocephala spp. also is high, between 4 and 8% of soil mass for this plant accession. Accepted for publication 23 May 2002. Published 10 June 2002.

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16

Young, Ronald M., and Stephane Le Tirant. "A New Cyclocephala from Montane Colombia (Scarabaeidae: Dynastinae)." Coleopterists Bulletin 59, no. 2 (June 2005): 267–70. http://dx.doi.org/10.1649/772.

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17

Ledesma Taira, Tiago, Paulo Cezar Gomes Assunção, Gilmar Modesto da Silva, and Sérgio Roberto Rodrigues. "OCORRÊNCIA DE CYCLOCEPHALA MELANOCEPHALA (COLEOPTERA: SCARABAEIDAE) EM SERINGUEIRA." JOURNAL OF NEOTROPICAL AGRICULTURE 01, no. 02 (2014): 80–82. http://dx.doi.org/10.32404/rean.v1i2.231.

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Rodrigues, Sérgio R., Gerson A. L. Nogueira, Rodrigo R. Echeverria, and Vilma S. Oliveira. "Aspectos biológicos de Cyclocephala verticalis burmeister (coleoptera: scarabaeidae)." Neotropical Entomology 39, no. 1 (February 2010): 15–18. http://dx.doi.org/10.1590/s1519-566x2010000100003.

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19

Sanchez-Cruz, Abraham, Norma Robledo, María Rosete-Enríquez, and Angel A. Romero-López. "Attraction of Adults of Cyclocephala lunulata and Cyclocephala barrerai (Coleoptera: Scarabaeoidea: Melolonthidae) towards Bacteria Volatiles Isolated from Their Genital Chambers." Molecules 25, no. 19 (September 27, 2020): 4430. http://dx.doi.org/10.3390/molecules25194430.

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In the study of the chemical communication of adults of the Melolonthidae family, bacteria have been observed in the epithelium of the genital chamber; possibly, bacteria are involved in the production of sex attractants in their hosts. Therefore, it is important to identify the volatile organic compounds from bacteria (VOCsB) released by these microorganisms and study the biological activity stimulated by VOBCs in adults of Melolonthidae. In this study, bacteria were isolated from the genital chamber of Cyclocephala lunulata and Cyclocephala barrerai, from which VOCsB were extracted using static headspace solid-phase microextraction (SHS-SPME) and dynamic headspace Super Q solid-phase extraction (DHS-SPE) and analyzed using gas chromatography-mass spectrometry. The effect of VOCsB on the hosts and conspecifics was evaluated utilizing an olfactometer and electroantennography (EAG). Two species of Enterobacteria were isolated from the genital chamber of each female species, and VOCsB derived from sulfur-containing compounds, alcohols, esters, and fatty acids were identified. An attraction response was observed in olfactometry studies, and antennal responses to VOCsB were confirmed in EAG bioassays. With these results, new perspectives on the relationship between these beetles and their bacteria emerge, in addition to establishing a basis for management programs in the future.

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Gasca-Álvarez, H. J., and U. Bosia. "Scarab beetle Cyclocephala panthera (Coleoptera: Scarabaeidae: Dynastinae: Cyclocephalini): redescription and the first record from Colombia." Zoosystematica Rossica 29, no. 2 (August 15, 2020): 165–71. http://dx.doi.org/10.31610/zsr/2020.29.2.165.

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The scarab beetle Cyclocephala panthera Dechambre, 1979, previously known from Brazil, Bolivia and Peru, is recorded from Colombia for the first time and redescribed. The redescription is provided with illustrations of the diagnostic characters and a map of the known distribution of the species.

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Barbosa, Carlos Aparecido Ferreira, and Sérgio Roberto Rodrigues. "Comportamento de cópula em Cyclocephala verticalis Burmeister (Coleoptera: Scarabaeidae)." EntomoBrasilis 9, no. 3 (December 15, 2016): 158–62. http://dx.doi.org/10.12741/ebrasilis.v9i3.581.

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O gênero Cyclocephala possui grande quantidade de espécies distribuídas nas várias regiões do Brasil, entretanto, poucos são os estudos relacionados ao comportamento de cópula, assim o presente trabalho teve como objetivo estudar o comportamento de cópula de Cyclocephala verticalis Burmeister. Com uma armadilha luminosa instalada ao lado de área de pastagens, foram realizadas coletas de adultos de agosto a setembro de 2013. Em laboratório machos e fêmeas foram mantidos em recipientes separados e ao anoitecer, foram formados casais para observações das etapas que envolvem o comportamento de cópula. De 28 de outubro a 4 de novembro de 2013, para determinar o horário de voo, recolheu-se os insetos coletados na armadilha luminosa a cada 60 min, iniciando os estudos as 18:00 h e encerrando as observações as 6:00 h do dia seguinte. Ao saírem do solo os adultos realizaram ativamente o voo, em seguida pousaram, e o macho ao localizar a fêmea, se aproxima e a toca com o primeiro par de pernas e antenas. Se a fêmea aceita o macho, ocorre à cópula a qual durou 12,5 + 1,3 min em média, e ocorreu entre 19:00 h e 02:00 h. Em algumas ocasiões as fêmeas não aceitaram os machos para a cópula, indicando que os estes provavelmente não estavam aptos a se reproduzirem, ou a própria fêmea não estava apta a se reproduzir, havendo nesse momento reconhecimento químico entre os adultos para a formação do casal. Os adultos revoaram em campo em maiores quantidades das 20:00 h as 23:00 h.Mating Behavior in Cyclocephala verticalis Burmeister (Coleoptera: Scarabaeidae)Abstract. The genus Cyclocephala has a large number of species distributed in various regions of Brazil, however, there are few studies related to mating behavior of this group, so this paper was to study the behavior of copulation Cyclocephala verticalis Burmeister. With a light trap installed next to the pasture area, being performed collections of adults from August to September 2013. In laboratory males and females were kept in separate containers and at dusk, couples have been formed to observations of steps involving the behavior of copula. From October 28 to November 4 of 2013, to determine the time of fly, was collected the insects on the light trap, every 60 minutes, starting the studies the 18:00 pm and closing remarks at 6:00 am, from the following day. Upon leaving the soil adults actively performed the flight then landed, and the male to find the female, approaches and touches it with the first pair of legs and antennae. If the female accepts the male, to copulate occurs which lasted 12.5 + 1.3 min on average, and occurred between 19:00 pm and 02:00 am. Sometimes the females did not accept males for copulation, indicating that these probably were not able to reproduce, or female herself was not able to reproduce, with that time chemical recognition among adults for the formation of the couple. Adults fluttered on the pitch in larger quantities 20:00 pm to 23:00 pm.

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Pellmyr, Olle. "Cyclocephala: visitor and probable pollinator of Caladium bicolor (Araceae)." Acta Amazonica 15, no. 1-2 (June 1985): 269–72. http://dx.doi.org/10.1590/1809-43921985152272.

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MOORE, MATTHEW R., STEFANI M. HARRISON, RONALD D. CAVE, and MARC A. BRANHAM. "Mitochondrial sequence data clarify species concepts in the Cyclocephala mafaffa species complex (Coleoptera: Scarabaeidae: Dynastinae: Cyclocephalini)." Zootaxa 4772, no. 1 (May 7, 2020): 89–110. http://dx.doi.org/10.11646/zootaxa.4772.1.3.

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The speciose genus Cyclocephala Dejean (Coleoptera: Scarabaeidae: Dynastinae: Cyclocephalini) has attracted research attention due to their diversity, agroeconomic importance, and floral visitation habits. Uniquely among Cyclocephala species, C. mafaffa Burmeister and C. deceptor (Casey), two nearly identical species, are diagnosed by a pronotal character: beaded or not beaded basal pronotal margin. We evaluated these morphological species hypotheses with a phylogenetic analysis of 12S and COI, neighbor-joining analysis, and several single-locus species delimitation procedures (automatic barcode gap analysis and three Poisson tree processes analyses). Together, these analyses supported the species concepts for C. deceptor and C. mafaffa. Delimitation procedures supported several distinct molecular operational taxonomic units among these taxa. We consider the separation of C. deceptor and C. mafaffa to be valid. We conservatively synonymize the West Indian subspecies C. mafaffa grandis Burmeister under C. mafaffa and offer a discussion on subspecific concepts in Cyclocephalini. We designate the lectotype of Stigmalia deficiens Casey. Implications of this study for other geographically widespread cyclocephalines or species with variable pronotal morphology are discussed.

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JOLY, LUIS J. "Review of the species in the Cyclocephala bicolor Laporte species group (Coleoptera: Scarabaeidae: Dynastinae)." Zootaxa 2048, no. 1 (March 23, 2009): 47–64. http://dx.doi.org/10.11646/zootaxa.2048.1.3.

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The species in the Cyclocephala bicolor Laporte species group are revised. C. bicolor Laporte, C. bicolorata Endrödi, C. sarahae Ratcliffe, and C. dichroa Dechambre are redescribed, and C. anibali, sp. n. is described from Venezuela. The group is characterized and a key for identification of the species, drawings of the key characters, and distribution maps are presented.

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Achinelly, M., and N. Camino. "A new Nematoda (Thelastomatidae) parasite of Coleoptera larvae from Argentina." Helminthologia 45, no. 2 (June 1, 2008): 86–88. http://dx.doi.org/10.2478/s11687-008-0016-1.

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AbstractLeidynema saltense n. sp. (Nematoda, Thelastomatidae), a parasite of larvae of Cyclocephala modesta (Coleoptera, Scarabaeidae) from Salta province, Argentina, is described and illustrated. This species is characterised by the presence of an intestinal caecum in the female, and four pairs of genital papillae in the male, one pair of which is large, ventral and pre-anal and three pairs are subventral and postanal.

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Diez-Rodríguez, Gabriela Inés, Lucas Khun Hübner, Luis Eduardo Corrêa Antunes, Jerson Vanderlei Carús Guedes, and Dori Edson Nava. "Registro de Cyclocephala flavipennis Arrow, 1914 (Coleoptera: Melolonthidae) danificando plantas de mirtileiro no Brasil." Ciência Rural 45, no. 2 (February 2015): 189–91. http://dx.doi.org/10.1590/0103-8478cr20140412.

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Larvas de Cyclocephala flavipennis Arrow, 1914, são comumente encontradas em cereais de inverno (trigo, cevada, aveia e triticale), milho e soja, no Rio Grande do Sul. Em março de 2012, larvas desta espécie foram detectadas em plantas de mirtileiro (Vaccinium ashei Reade), cultivar 'O´Neal', no município de Pelotas, RS. Os insetos alimentaram-se de raízes em áreas restritas do pomar. Este é o primeiro relato da ocorrência do coró-pequeno, C. flavipennis, em plantas de mirtileiro

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Favaris, Arodí P., Amanda C. Túler, Weliton D. Silva, Sérgio R. Rodrigues, Walter S. Leal, and José M. S. Bento. "(3S,6E)-nerolidol-mediated rendezvous of Cyclocephala paraguayensis beetles in bottle gourd flowers." PLOS ONE 15, no. 12 (December 23, 2020): e0235028. http://dx.doi.org/10.1371/journal.pone.0235028.

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Cyclocephalini beetles of the genus Cyclocephala (Coleoptera: Melolonthidae: Dynastinae) use flowers of some plants as food, shelter, and mating sites. However, little is known about floral scent chemistry involved in this interaction. Here we show that a sesquiterpene alcohol mediates attraction of Cyclocephala paraguayensis Arrow, on bottle gourd flowers, Lagenaria siceraria (Cucurbitaceae). Both males and females started to aggregate on the flowers at twilight; after that, mating began and remained for the entire night. GC-FID/EAD analysis of the L. siceraria floral scent collected in the field revealed that only the major constituent of the airborne volatiles elicited electroantennographic responses on male and female antennae of C. paraguayensis. This compound was identified as (3S,6E)-nerolidol, which was tested in two field trapping trials in Brazil. In the first bioassay, traps baited with nerolidol (mix of isomers) captured significantly more adult C. paraguayensis than control traps. In the second field trial, catches in traps baited with a mixture of isomers or enantiopure nerolidol were significantly higher than captures in control traps, but the treatments did not differ significantly. Analysis from the gut content of adult C. paraguayensis showed the presence of pollen, suggesting that they also use bottle gourd flowers for their nourishment. Taken together, these results suggest that (3S,6E)-nerolidol plays an essential role in the reproductive behavior of C. paraguayensis by eliciting aggregation, mating, and feeding.

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ANDREAZZE, Ricardo, and Claudio Ruy V. FONSECA. "Dinastíneos (coleoptera, scarabaeoidea, melolonthidae) em uma área de terra firme na Amazônia Central, Brasil1." Acta Amazonica 28, no. 1 (March 1998): 59. http://dx.doi.org/10.1590/1809-43921998281066.

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Foram efetuadas coletas mensais de julho/1990 a junho/1991, durante a lua nova, na Fazenda Aruanã, uma área de terra-firme às margens da rodovia Torquato Tapajós, AM-010, Km 215, Município de Itacoatiara, Estado do Amazonas, Brasil. Utilizou-se para as coletas luz mista de mercúrio de 250 W, sobre um lençol branco. Foram coletados 251 indivíduos de 9 gêneros e 18 espécies de dinastíneos e dentre estes houve predominância de Cyclocephala Latreille (3 espécies abundantes) e Ligyrus Burmeister (única espécie abundante).

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Albuquerque, Larissa Simões Corrêa de, Thamyrys Bezerra de Souza, Artur Campos Dália Maia, and Luciana Iannuzzi. "New Biological and Immature Morphological Records of the Masked Chafer,Cyclocephala paraguayensis." Journal of Insect Science 14, no. 101 (August 2014): 1–11. http://dx.doi.org/10.1673/031.014.101.

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Camino, Nora B., and Guillermo R. Reboredo. "A NEW OXYURIDA (THELASTOMATIDAE) FROM CYCLOCEPHALA SIGNATICOLLIS BURMEISTER (COLEOPTERA: SCARABAEIDAE) FROM ARGENTINA." Journal of Parasitology 91, no. 4 (August 2005): 890–92. http://dx.doi.org/10.1645/ge-3447.1.

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Fuhrmann, Juares, Bruno Mateus Ribeiro Dias, and Sérgio Roberto Rodrigues. "Population dynamics and description of larva and pupa of Cyclocephala tucumana Bréthes, 1904 in West-Central Brazil, and remarks on immatures of other Cyclocephala species (Coleoptera: Scarabaeidae: Dynastinae)." Revista Brasileira de Entomologia 63, no. 4 (October 2019): 331–42. http://dx.doi.org/10.1016/j.rbe.2019.08.003.

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Crutchfield, Berry A., and Daniel A. Potter. "Preferences of Japanese Beetle and Southern Masked Chafer (Coleoptera: Scarabaeidae) Grubs Among Cool-Season Turfgrasses." Journal of Entomological Science 29, no. 3 (July 1, 1994): 398–406. http://dx.doi.org/10.18474/0749-8004-29.3.398.

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Feeding preferences of Japanese beetle, Popillia japonica Newman, and southern masked chafer, Cyclocephala lurida Bland, grubs for six common cool-season turfgrasses were evaluated in choice tests in the greenhouse. On the basis of larval distributions, Popillia japonica consistently preferred perennial ryegrass, Lolium perenne L., over all other turfgrasses tested. In contrast, C. lurida showed no consistent pattern of preference. Presence of one grub species did not affect distribution of the other species. Grubs did not discriminate between tall fescue, Festuca arundinacea Schreb., infected with the endophyte Acremonium coenophialum Morgan-Jones & Gams and endophyte-free tall fescue.

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Ratcliffe, Brett C., and Richard L. Hoffman. "Cyclocephala nigricollisBurmeister (Coleoptera: Scarabaeidae: Dynastinae: Cyclocephalini). What is It? and Where is It?" Coleopterists Bulletin 65, no. 2 (June 2011): 135–38. http://dx.doi.org/10.1649/072.065.0207.

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34

Souza, Thamyrys B., Artur C. D. Maia, Cleide M. R. Albuquerque, and Luciana Iannuzzi. "Biology and management of the masked chafer Cyclocephala distincta Burmeister (Melolonthidae, Dynastinae, Cyclocephalini)." Revista Brasileira de Entomologia 59, no. 1 (January 2015): 37–42. http://dx.doi.org/10.1016/j.rbe.2015.02.004.

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35

Converse, V., and P. S. Grewal. "Virulence of Entomopathogenic Nematodes to the Western Masked Chafer Cyclocephala hirta (Coleoptera: Scarabaeidae)." Journal of Economic Entomology 91, no. 2 (April 1, 1998): 428–32. http://dx.doi.org/10.1093/jee/91.2.428.

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SOUZA, THAMYRYS BEZERRA DE, ARTUR CAMPOS DÁLIA MAIA, CLEIDE MARIA RIBEIRO DE ALBUQUERQUE, and LUCIANA IANNUZZI. "Description of Cyclocephala distincta Burmeister (Coleoptera: Scarabaeidae: Dynastinae: Cyclocephalini) immatures and identification key for third instars of some Cyclocephala species." Zootaxa 3872, no. 2 (October 8, 2014): 180. http://dx.doi.org/10.11646/zootaxa.3872.2.4.

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37

Reboredo, Guillermo R., and Nora B. Camino. "TWO NEW RHABDITIDA SPECIES (NEMATODA: RHABDITIDAE) PARASITES OF CYCLOCEPHALA SIGNATICOLLIS (COLEOPTERA: SCARABAEIDAE) IN ARGENTINA." Journal of Parasitology 86, no. 4 (2000): 819. http://dx.doi.org/10.1645/0022-3395(2000)086[0819:tnrsnr]2.0.co;2.

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Reboredo, Guillermo R., and Nora B. Camino. "Two New Rhabditida Species (Nematoda: Rhabditidae) Parasites of Cyclocephala signaticollis (Coleoptera: Scarabaeidae) in Argentina." Journal of Parasitology 86, no. 4 (August 2000): 819. http://dx.doi.org/10.2307/3284971.

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39

Gonçalves, Jacqueline A., Paschoal C. Grossi, Pedro H. B. Togni, Charles M. Oliveira, and Marina R. Frizzas. "The genus Cyclocephala Dejean (Coleoptera: Scarabaeidae: Dynastinae) in Brazil: diversity and spatio-temporal distribution." Journal of Insect Conservation 24, no. 3 (March 18, 2020): 547–59. http://dx.doi.org/10.1007/s10841-020-00230-6.

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40

Cherry, R. H., and M. G. Klein. "Mortality Induced by Bacillus popilliae in Cyclocephala parallela (Coleoptera: Scarabaeidae) Held under Simulated Field Temperatures." Florida Entomologist 80, no. 2 (June 1997): 261. http://dx.doi.org/10.2307/3495559.

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41

Parizotto, D. R., and P. C. Grossi. "Revisiting pollinating Cyclocephala scarab beetles (Coleoptera: Melolonthidae: Dynastinae) associated with the soursop (Annona muricata, Annonaceae)." Neotropical Entomology 48, no. 3 (November 27, 2018): 415–21. http://dx.doi.org/10.1007/s13744-018-0647-y.

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Rice, Marlin E. "Damage Assessment of the Annual White Grub, Cyclocephala lurida (Coleoptera: Scarabaeidae), in Com and Soybean." Journal of Economic Entomology 87, no. 1 (February 1, 1994): 220–22. http://dx.doi.org/10.1093/jee/87.1.220.

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43

Blanco, Carlos A., and Gerardo Hernández. "Prediction of Masked Chafer,Cyclocephala pasadenae, Capture in Light Traps Using a Degree-Day Model." Journal of Insect Science 6, no. 36 (October 2006): 1–6. http://dx.doi.org/10.1673/031.006.3601.

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44

Kaya, H. K., M. G. Klein, and T. M. Burlando. "Impact ofBacillus popilliae, Rickettsiella popilliaeand entomopathogenic nematodes on a population of the scarabaeid,Cyclocephala hirta." Biocontrol Science and Technology 3, no. 4 (January 1993): 443–53. http://dx.doi.org/10.1080/09583159309355299.

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45

Morón, Miguel A., Gabriel A. Lugo-García, and Agustín Aragón-García. "Description of the third instar larvae of five species of Cyclocephala (Coleoptera, Melolonthidae, Dynastinae) from Mexico." Revista Brasileira de Entomologia 58, no. 3 (September 2014): 219–28. http://dx.doi.org/10.1590/s0085-56262014000300001.

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46

Maia, Artur Campos Dália, Letícia Koutchin Reis, Daniela Maria do Amaral Ferraz Navarro, Flavio Aristone, Carlos Augusto Colombo, Javier Carreño‐Barrera, Luis Alberto Núñez‐Avellaneda, and Geanne Karla Novais Santos. "Chemical ecology of Cyclocephala forsteri (Melolonthidae), a threat to macauba oil palm cultivars ( Acrocomia aculeata , Arecaceae)." Journal of Applied Entomology 144, no. 1-2 (September 12, 2019): 33–40. http://dx.doi.org/10.1111/jen.12699.

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47

Giannoulis, T., A. M. Dutrillaux, C. Stamatis, B. Dutrillaux, and Z. Mamuris. "Cyclocephala (Coleoptera: Scarabaeidae: Dynastinae) evolution in Lesser West Indies indicates a Northward colonization by C. tridentata." Bulletin of Entomological Research 102, no. 3 (November 24, 2011): 325–32. http://dx.doi.org/10.1017/s0007485311000733.

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AbstractA dual cytogenetic and molecular analysis was performed in four species of Cyclocepala (Coleoptera: Scarabaeidae: Dynastinae) from Lesser Antilles (Martinique, Dominica and Guadeloupe). Two species/sub-species, C. mafaffa grandis and C. insulicola, are endemic to Guadeloupe. They have their own non-polymorphic karyotype and a fairly homogeneous haplotype of the COI gene. C. melanocephala rubiginosa has a distinct karyotype. Its COI haplotype is homogeneous in Guadeloupe and heterogeneous in Martinique. Finally, C. tridentata has highly different karyotypes and haplotypes in the three islands. In Martinique, its karyotype, composed of metacentrics, is monomorphic while its haplotype is fairly heterogeneous. Both are close to those of other Cyclocephala and Dynastinae species, thus fairly ancestral. In Guadeloupe, its karyotype is highly polymorphic, with many acrocentrics, and its haplotype fairly homogeneous. Both are highly derived. In Dominica, both the karyotype and the haplotype represent intermediate stages between those of Martinique and Guadeloupe. We conclude that several independent colonization episodes have occurred, which excludes that C. insulicola is a vicariant form of C. tridentata in Guadeloupe. Both chromosome and COI gene polymorphisms clearly indicate a recent colonization with a northward direction for C. tridentata.

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Boucias, D. G., R. H. Cherry, and D. L. Anderson. "Incidence of Bacillus popilliae in Ligyrus subtropicus and Cyclocephala parallela (Coleoptera: Scarabaeidae) in Florida Sugarcane Fields." Environmental Entomology 15, no. 3 (June 1, 1986): 703–5. http://dx.doi.org/10.1093/ee/15.3.703.

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49

Moore, Matthew R., Ronald D. Cave, and Marc A. Branham. "Annotated catalog and bibliography of the cyclocephaline scarab beetles (Coleoptera, Scarabaeidae, Dynastinae, Cyclocephalini)." ZooKeys 745 (March 22, 2018): 101–378. http://dx.doi.org/10.3897/zookeys.745.23685.

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Cyclocephaline scarab beetles represent the second largest tribe of the subfamily Dynastinae, and the group includes the most speciose genus of dynastines, Cyclocephala. The period following publication of Sebő Endrődi’s The Dynastinae of the World has seen a huge increase in research interest on cyclocephalines, and much of this research has not been synthesized. The objective of this catalog and bibliography is to compile an exhaustive list of taxa in Cyclocephalini. This paper provides an updated foundation for understanding the taxonomy and classification of 14 genera and over 500 species in the tribe. It discusses the history of cataloging dynastine species, clarifies issues surrounding the neotype designations in Endrődi’s revision of Cyclocephalini, synthesizes all published distribution data for cyclocephaline species, and increases accessibility to the voluminous literature on the group by providing an easily searchable bibliography for each species. We propose the nomen novum Cyclocephalarogerpauli, new replacement name, for C.nigra Dechambre.

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GROSSI, PASCHOAL C., MARIANA D. SANTOS, and LÚCIA M. ALMEIDA. "Two new species of Cyclocephala (Coleoptera: Scarabaeoidea: Melolonthidae) from Minas Gerais State, Brazil." Zootaxa 4078, no. 1 (February 9, 2016): 245. http://dx.doi.org/10.11646/zootaxa.4078.1.22.

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