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Journal articles on the topic 'Zoology, guyana'

Author: Grafiati

Published: 11 December 2022

Last updated: 31 July 2025

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1

SANBORN, ALLEN F. "Two new species and two new records for cicadas (Hemiptera: Cicadidae) from French Guiana, with an updated faunal list of French Guiana and the first synoptic list for Guyana." Zootaxa 5368, no. 1 (2023): 1–74. http://dx.doi.org/10.11646/zootaxa.5368.1.1.

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Zammara conflutrimacula n. sp. and Fidicinoides ininiensis n. sp. are described as new. The first records of Guyalna polypaga Sanborn, 2019 and Taphura dolabella Sanborn, 2017 are reported for French Guiana. Cicada clarisona Hancock, 1834 nomen nudum, revised status, is shown to be unavailable. The first synoptic list of cicadas for Guyana is provided. The currently known cicada fauna for French Guiana is 73 species, 20 genera, five tribes, and three subfamilies. The known fauna of Guyana is 12 species, nine genera, two tribes and one subfamily.

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2

Braun, Michael J., Morton L. Isler, Phyllis R. Isler, John M. Bates, and Mark B. Robbins. "Avian Speciation in the Pantepui: The Case of the Roraiman Antbird (Percnostola [Schistocichla] “Leucostigma” Saturata)." Condor 107, no. 2 (2005): 327–41. http://dx.doi.org/10.1093/condor/107.2.327.

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AbstractWe document the first records for Guyana of Roraiman Antbird (Percnostola [Schistocichla] “leucostigma” saturata), an endemic of the tepui highlands of southeastern Venezuela, northern Brazil and western Guyana. This form is well differentiated from nominate leucostigma (Spot-winged Antbird) of the Guianan lowlands in morphology, vocalizations, and genetics, and replaces it both altitudinally and ecologically. The two taxa are distributed parapatrically on the continuously forested northeastern slopes of the eastern tepuis, and they almost certainly come into contact, yet there is no e

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3

LAPOLLA, JOHN S., and JEFFREY SOSA-CALVO. "Review of the ant genus Rogeria (Hymenoptera: Formicidae) in Guyana." Zootaxa 1330, no. 1 (2006): 59. http://dx.doi.org/10.11646/zootaxa.1330.1.5.

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The myrmicine ant genus Rogeria in Guyana is reviewed. Using previously published records, older collections, and collections from recent leaf litter ant survey work, nine Rogeria species are now known from Guyana, with another two species that probably also occur in Guyana. Among these eleven species, a new species, R. tsumani, is here described, and four of them, including the new species, are new records for Guyana. A key to the species found in Guyana is provided, along with illustrations of all 11 species.

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4

MacCulloch, Ross D., Amy Lathrop, Philippe J. R. Kok, Raffael Ernst, and Michelle Kalamandeen. "The genus Oxyrhopus (Serpentes: Dipsadidae: Xenodontinae) in Guyana: morphology, distributions and comments on taxonomy." Papéis Avulsos de Zoologia 49, no. 36 (2009): 487–95. http://dx.doi.org/10.1590/s0031-10492009003600001.

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Considerable confusion exists regarding taxonomy and distributions of Oxyrhopus in northern South America. Specimens and records of Oxyrhopus from Guyana were examined. Oxyrhopus melanogenys, O. occipitalis and O. petola occur in Guyana. Data on morphology and colouration of these species are presented. Species distributions and characters to distinguish among the species are discussed.

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5

Miller, Kelly B. "Nineteen new species of Desmopachria Babington, 1841 (Coleoptera, Adephaga, Dytiscidae, Hydroporinae, Hyphydrini) with notes on the taxonomy of the genus." ZooKeys 1136 (December 16, 2022): 1–56. http://dx.doi.org/10.3897/zookeys.1136.72744.

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Nineteen new species of Desmopachria Babington, 1841 are described from multiple species groups. Two new species groups are erected, the Desmopachria apicodente species group and the Desmopachria bifurcita species group. Desmopachria divergenssp. nov. (Venezuela), Desmopachria lineatasp. nov. (Venezuela), Desmopachria surinamensissp. nov. (Suriname), and Desmopachria tenuasp. nov. (Guyana) are described in Desmopachria but are not assigned to a species group. Desmopachria apicodentesp. nov. (Guyana, Venezuela), Desmopachria lateralissp. nov. (Venezuela), and Desmopachria tumidasp. nov. (Venezu

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6

Smith, Rachel R., and Andrew Edward Z. Short. "Review of the genus Chasmogenus Sharp, 1882 of northeastern South America with an emphasis on Venezuela, Suriname, and Guyana (Coleoptera, Hydrophilidae, Acidocerinae)." ZooKeys 934 (May 19, 2020): 25–79. http://dx.doi.org/10.3897/zookeys.934.49359.

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The water scavenger beetle genus Chasmogenus Sharp, 1882 is reviewed in northeastern South America using an integrative approach that combines adult morphology and molecular data from the gene cytochrome c oxidase I (COI). Eighteen new species are described: Chasmogenus acuminatussp. nov. (Brazil, French Guiana, Guyana, Suriname), C. ampliussp. nov. (Venezuela), C. berbicensissp. nov. (Guyana), C. brownsbergensissp. nov. (Suriname), C. castaneussp. nov. (Venezuela), C. clavijoisp. nov. (Venezuela), C. cuspifersp. nov. (Venezuela), C. flavomarginatussp. nov. (Venezuela), C. gatosp. nov. (Venezu

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7

CUMBERLIDGE, NEIL. "A new species of freshwater crab of the genus Microthelphusa (Brachyura: Pseudothelphusidae) from a remote isolated cloud forest on a tabletop mountain in western Guyana, South America." Zootaxa 1447, no. 1 (2007): 57–62. http://dx.doi.org/10.11646/zootaxa.1447.1.4.

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A new species of freshwater crab of the genus Microthelphusa Pretzmann, 1968, from Guyana, South America is described. Microthelphusa meansi, new species, was collected from a remote isolated cloud forest in the Wokomung Massif, a tabletop mountain (tepui) in western Guyana at over 1,000 m above sea level. The conspicuous horseshoe-like marginal lobe and the dome-like auxiliar cephalic lobe of the first gonopod clearly distinguish this species from all 12 congeners.

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8

Ansari, Abdullah Adil, and Preeta Saywack. "Identification and Classification of Earthworm Species in Guyana." International Journal of Zoological Research 7, no. 1 (2010): 93–99. http://dx.doi.org/10.3923/ijzr.2011.93.99.

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9

Motie, A., S. Ramudit, and R. Mohabir. "Subclinical mastitis in dairy cattle in Guyana." Tropical Animal Health and Production 17, no. 4 (1985): 245–46. http://dx.doi.org/10.1007/bf02356987.

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10

Motte, A., and D. M. Myers. "Leptospirosis in sheep and goats in Guyana." Tropical Animal Health and Production 18, no. 2 (1986): 113–14. http://dx.doi.org/10.1007/bf02359724.

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11

Robbins, Mark B., Michael J. Braun, and Davis W. Finch. "Discovery of a Population of the Endangered Red Siskin (Carduelis Cucullata) in Guyana." Auk 120, no. 2 (2003): 291–98. http://dx.doi.org/10.1093/auk/120.2.291.

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Abstract A heretofore unknown population of the endangered Red Siskin (Carduelis cucullata) was discovered in southwestern Guyana, ∼950 km from populations along the Venezuela coastal cordilleras. Most Venezuelan populations have been greatly reduced by the pet trade during the past 150 years, thus the newly discovered Guyana population represents an opportunity to insure the survival of this highly endangered species in the wild. Breeding of Guyanese siskins coincides with both breeding periods (May to early July and November—December) that have been documented in Venezuela. Breeding behavior

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12

Girón, Jennifer C., and Andrew Edward Z. Short. "Three additional new genera of acidocerine water scavenger beetles from the Guiana and Brazilian Shield regions of South America (Coleoptera, Hydrophilidae, Acidocerinae)." ZooKeys 855 (June 13, 2019): 109–54. http://dx.doi.org/10.3897/zookeys.855.33013.

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Recent study of the water scavenger beetle subfamily Acidocerinae in the Neotropical region has uncovered numerous undescribed species that are not able to be placed in existing genera. Here, we describe three new genera to accommodate 17 of these new species from South America: Aulonocharesgen. nov. for Aulonochareslingulatussp. nov. (French Guiana, Suriname), Aulonocharesnovoairensissp. nov. (Brazil), and Aulonocharestubulussp. nov. (Brazil, Guyana, Suriname, Venezuela); Ephydrolithusgen. nov. for Ephydrolithushamadaesp. nov. (Brazil), Ephydrolithusminorsp. nov. (Brazil), Ephydrolithusogmoss

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13

KOK, PHILIPPE J. R. "A new snake of the genus Atractus Wagler, 1828 (Reptilia: Squamata: Colubridae) from Kaieteur National Park, Guyana, northeastern South America." Zootaxa 1378, no. 1 (2006): 19. http://dx.doi.org/10.11646/zootaxa.1378.1.2.

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A new colubrid snake of the genus Atractus Wagler 1828 is described from Kaieteur National Park, west-central Guyana. The new species differs from all other congeners by the combination of two postoculars, 15 dorsal scale rows, eight supralabials, seven to eight infralabials, loreal much longer than high, six maxillary teeth, and a color pattern consisting of irregular red or pale red markings, sometimes forming an incomplete broken dorsolateral stripe, on a medium brown to brownish black ground color, and heavy brownish black mottling on a yellowish cream venter. A key to the species of the g

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14

JOCQUE, MERLIJN, and ALESSANDRO PONCE DE LEÃO GIUPPONI. "Charinus bromeliaea sp. n. (Amblypygi: Charinidae); a new species of bromeliad inhabiting whip spider from French Guyana." Zootaxa 3158, no. 1 (2012): 53. http://dx.doi.org/10.11646/zootaxa.3158.1.4.

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A new species of Charinus Simon, 1892 is described from French Guyana, raising the number of species in the genus to48 (27 for the Neotropical region and 19 for South America). Charinus bromeliaea sp. n. is distinguished from the otherspecies in the genus by morphological characteristics and unique ecology. Adapted to live in Achmea bromeliads on gran-ite inselbergs, this species is an interesting addition to the wide range of habitats Charinus species are found in. This is also the first record of the genus from French Guyana and this record extends the geographic distribution of the genus.

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15

KOK, PHILIPPE J. R. "A new species of Oreophrynella (Anura: Bufonidae) from the Pantepui region of Guyana, with notes on O. macconnelli Boulenger, 1900." Zootaxa 2071, no. 1 (2009): 35–49. http://dx.doi.org/10.11646/zootaxa.2071.1.3.

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Oreophrynella seegobini sp. nov. is described from 2088 m elevation on Maringma tepui in the Pakaraima Mountains of Guyana, at the Guyana-Brazil border. The new species is mainly distinguished from known congeners by small size, indistinct frontoparietal crests, prominent postorbital crests, prominent suborbital crests, well-developed webbing on hand and foot, dorsal skin minutely spiculate with scattered medium to large elevated tubercles, ventral skin anteriorly rugose with few flat granules, posteriorly tuberculate, blackish brown dorsal colour, and dark brownish orange ventral colour. Data

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16

Short, Andrew Edward Z., and Jennifer C. Girón. "Revision of the Neotropical water scavenger beetle genus Novochares Girón & Short (Coleoptera, Hydrophilidae, Acidocerinae)." ZooKeys 1171 (July 20, 2023): 1–112. http://dx.doi.org/10.3897/zookeys.1171.104142.

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The water scavenger beetle genus Novochares Girón & Short, 2021 is revised using a combination of adult morphological and DNA sequence data. Thirty-eight new species are described: Novochares aperitosp. nov. (Bolivia), N. bacasp. nov. (Brazil, Ecuador, Peru, Suriname), N. bidenssp. nov. (Brazil), N. bisinuatussp. nov. (Brazil), N. clavierisp. nov. (Brazil, French Guiana, Peru), N. dantasp. nov. (Venezuela), N. dentatussp. nov. (Ecuador, Venezuela), N. dicranospathussp. nov. (Peru), N. duosp. nov. (Brazil, French Guiana, Guyana, Suriname, Venezuela), N. fernandezaesp. nov. (Brazil, Peru, Ve

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17

GOWER, DAVID J., MARK WILKINSON, EMMA SHERRATT, and PHILIPPE J. R. KOK. "A new species of Rhinatrema Duméril & Bibron (Amphibia: Gymnophiona: Rhinatrematidae) from Guyana." Zootaxa 2391, no. 1 (2010): 47. http://dx.doi.org/10.11646/zootaxa.2391.1.3.

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The first new species of rhinatrematid caecilian in more than 50 years, Rhinatrema shiv sp. nov., is described from Guyana. The type series of 10 specimens differs from the only other species in the genus, R. bivittatum, in having a longer tail, different colour pattern, more acuminate and relatively shorter head, and in several features of the skull and mandible including dentition. Sequence data for 1572 aligned base pairs of mitochondrial DNA are > 15% different between the two species. Rhinatrema shiv is known only from Guyana, and R. bivittatum from French Guiana and far northeastern B

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18

Donnelly, Maureen A., Ross D. MacCulloch, Cristina A. Ugarte, and David Kizirian. "A New Riparian Gymnophthalmid (Squamata) from Guyana." Copeia 2006, no. 3 (2006): 396–403. http://dx.doi.org/10.1643/0045-8511(2006)2006[396:anrgsf]2.0.co;2.

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19

PERKINS, PHILIP D., and IGNACIO RIBERA. "Three new species and DNA sequence data of the rare South American water beetle genus Adelphydraena Perkins, 1989 (Coleoptera: Hydraenidae)." Zootaxa 4858, no. 1 (2020): 35–52. http://dx.doi.org/10.11646/zootaxa.4858.1.2.

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Three new species of the very rarely collected water beetle genus Adelphydraena Perkins, 1989 are described from Brazil, Guyana, and Suriname. Illustrations of the male genitalia of the two previously known species in the genus, A. orchymonti Perkins and A. spangleri Perkins from Venezuela, are presented for the first time. High resolution digital images of the habitus of all species are given, and geographical distributions mapped. New species described are Adelphydraena amazonica n. sp. (Brazil), A. spinosa n. sp. (Guyana), and A. surinamensis n. sp. (Suriname). Mitochondrial and nuclear DNA

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20

Myers, Donald M., Alfonzo Ruiz, and Lennox Applewhaite. "Leptospiral agglutinins among cattle in the Republic of Guyana." Tropical Animal Health and Production 17, no. 4 (1985): 239–43. http://dx.doi.org/10.1007/bf02356985.

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21

Knudson, Alexander H. "A new species of Paraceratotingis Henry, Montemayor & Knudson from Guyana (Hemiptera, Heteroptera, Tingidae)." ZooKeys 796 (November 15, 2018): 301–5. http://dx.doi.org/10.3897/zookeys.796.23076.

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Paraceratotingishenryisp. n., is described from Guyana. Color photographs and a diagnostic key are provided to aid in distinguishing the species of Paraceratotingis Henry, Montemayor, and Knudson. Diagnoses are also provided.

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22

Erwin, R. Michael. "Feeding Activities of Black Skimmers in Guyana." Colonial Waterbirds 13, no. 1 (1990): 70. http://dx.doi.org/10.2307/1521423.

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23

Graves, Gary R. "Field Measurements of Gastrointestinal pH of New World Vultures in Guyana." Journal of Raptor Research 51, no. 4 (2017): 465–69. http://dx.doi.org/10.3356/jrr-16-62.1.

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24

DUBEY, J. P., L. APPLEWHAITE, N. SUNDAR, et al. "Molecular and biological characterization ofToxoplasma gondiiisolates from free-range chickens from Guyana, South America, identified several unique and common parasite genotypes." Parasitology 134, no. 11 (2007): 1559–65. http://dx.doi.org/10.1017/s0031182007003083.

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SUMMARYThe prevalence ofToxoplasma gondiiin free-ranging chickens (Gallus domesticus) is a good indicator of the prevalence ofT. gondiioocysts in the soil because chickens feed from the ground. The prevalence ofT. gondiiin 76 free-range chickens from Guyana, South America was determined. Antibodies toT. gondiiwere assayed by the modified agglutination test (MAT), and found in 50 (65·8%) of 76 chickens with titres of 1:5 in four, 1:10 in one, 1:20 in five, 1:40 in seven, 1:80 in six, 1:160 in eight, 1:320 in four, 1:640 or higher in 15. Hearts and brains of 26 chickens with titres of <1:5 we

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25

Háva, Jiří. "Contribution to Knowledge of the Genus Apsectus (Coleoptera, Dermestidae, Trinodinae) From Mexico and Neotropical Region." Vestnik Zoologii 46, no. 6 (2012): 64–67. http://dx.doi.org/10.2478/v10058-012-0048-3.

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Abstract Apsectus kaliki sp. n. from Guyana is described, illustrated and compared with all the known Neotropical species of the genus Apsectus LeConte, 1854. Lectotypes are designated for Apsectus centralis Sharp, 1902 and Apsectus hystrix Sharp, 1902

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26

MARTIN, JON H. "Kaieteurodicus, description and discussion of a new genus of neotropical aleurodicine whitefly (Hemiptera, Sternorrhyncha, Aleurodicinae)." Zootaxa 1730, no. 1 (2008): 43. http://dx.doi.org/10.11646/zootaxa.1730.1.3.

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Kaieteurodicus gen. nov. is described. It accommodates two new species, K. cereus from Guyana and K. panamensis from Panamá. The new genus is discussed in relation to a study of the genus Aleurodicus Douglas, which is continuing.

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27

KURINA, OLAVI. "Cluzobra matilei sp. n. from French Guyana, with notes on congeners (Diptera: Mycetophilidae)." Zootaxa 1874, no. 1 (2008): 63. http://dx.doi.org/10.11646/zootaxa.1874.1.6.

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Five Cluzobra Edwards species were recorded from the Kaw Mountains in French Guyana. Cluzobra matilei sp. n. is described, with colour photographs and line drawings. The new species is compared with the closely related species C. variegata and C. vicina.

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28

Schmidt, Robert E. "Redescription of Vandellia beccarii (Siluriformes: Trichomycteridae) from Guyana." Copeia 1987, no. 1 (1987): 234. http://dx.doi.org/10.2307/1446064.

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29

Motie, A., and D. M. Myers. "Serological survey for brucellosis in sheep and goats in Guyana." Tropical Animal Health and Production 17, no. 4 (1985): 247. http://dx.doi.org/10.1007/bf02356988.

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30

SILVA, DIEGO NUNES DA, FERNANDA RIBEIRO DE MELLO FRAGA, and MARIANA HENRIQUES SANTANA. "Typification of Nietneria corymbosa (Nartheciaceae), the type of the generic name." Phytotaxa 474, no. 2 (2020): 185–90. http://dx.doi.org/10.11646/phytotaxa.474.2.9.

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Nietneria is the only neotropical genus of Nartheciaceae, represented by two species: N. corymbosa and N. paniculata. The collections of the brothers Moritz Richard and Robert Hermann Schomburgk in the Guiana Shield are the first records of special value for Botany, Zoology, and Mineralogy in this region. The brothers carried out an important set of botanical collections for the Guyana flora, in different periods and expeditions, which were organized in different series. Among these, the “Robert’s second collection series (Rob. ser. 2)”, corresponding to the period from 1841 to 1844, which res

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31

Domahovski, Alexandre Cruz, and Rodney Ramiro Cavichioli. "A new species of Marganana (Declivana) (Hemiptera: Cicadellidae: Gyponini), the first record of the genus from Brazil." Papéis Avulsos de Zoologia 62 (October 4, 2022): e202262056. http://dx.doi.org/10.11606/1807-0205/2022.62.056.

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Marganana DeLong, 1948 currently includes three species known to occur in the United States, Mexico and Guyana. In this paper, we describe a new species from Brazil – Marganana (Declivana) tetramaculata sp. nov. – which represents the first record of this genus for the country. A revised diagnosis of the subgenus Declivana is provided, along with detailed descriptions and illustrations of males and females of the new species. A key to the four species of Marganana is also provided.

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32

Kment, Petr, Joe E. Eger, Jr., and David A. Rider. "Review of the Neotropical genus Rhyncholepta with descriptions of three new species-group taxa (Hemiptera, Heteroptera, Pentatomidae)." ZooKeys 796 (November 15, 2018): 347–95. http://dx.doi.org/10.3897/zookeys.796.22517.

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The genusRhyncholeptaBergroth, 1911 (Hemiptera: Heteroptera: Pentatomidae: Pentatominae: Chlorocorini) is redescribed and five species-group taxa are recognized, keyed, their diagnostic characters illustrated, and the distribution reviewed. Among the five taxa, two species and one subspecies are recognized as new:RhyncholeptagrandicallosagrandicallosaBergroth, 1911 (Brazil, Ecuador, French Guiana, Guyana, Peru, Suriname),Rhyncholeptagrandicallosacentroamericanasubsp. n.(Belize, Costa Rica, Guatemala, Mexico, Panama),Rhyncholeptahenryisp. n.(French Guiana),RhyncholeptameinanderiBecker &amp;

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33

WEST, RICK C., SAMUEL D. MARSHALL, CAROLINE SAYURI FUKUSHIMA, and ROGÉRIO BERTANI. "Review and cladistic analysis of the Neotropical tarantula genus Ephebopus Simon 1892 (Araneae: Theraphosidae) with notes on the Aviculariinae." Zootaxa 1849, no. 1 (2008): 35. http://dx.doi.org/10.11646/zootaxa.1849.1.3.

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The tarantula genus Ephebopus Simon 1892 is reviewed and includes the type species, E. murinus (Walckenaer 1837), and E. uatuman Lucas, Silva & Bertani 1992, E. cyanognathus West & Marshall 2000, E. rufescens West & Marshall 2000 and Ephebopus foliatus, sp. nov., from Guyana. Ephebopus violaceus Mello-Leitão 1930 is transferred to Tapinauchenius Ausserer, where it is a senior synonym of Tapinauchenius purpureus Schmidt 1995 new synonymy. Ephebopus fossor Pocock 1903 is considered a nomen dubium. Ephebopus occurs in northeastern South America where it is known only from Brazil, Guya

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34

SOARES, MATHEUS M. M., RENATO S. CAPELLARI, and ROSALY ALE-ROCHA. "New or little-known Neotropical Dolichopodidae (Diptera) (II): genus Hercostomus Loew excluded from the Neotropics." Zootaxa 5254, no. 2 (2023): 181–208. http://dx.doi.org/10.11646/zootaxa.5254.2.2.

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The Neotropical species of Hercostomus Loew are revised and the following new combinations are proposed: Paraclius panamensis (Van Duzee, 1931) comb. nov. (Panama), P. plumitarsis (Parent, 1931) comb. nov. (Bolivia), P. problematicus (Parent, 1930) comb. nov. (Brazil and Guyana) and Tachytrechus flavimanus (Van Duzee, 1934) comb. nov. (Brazil, Ecuador and Guyana). The type of Hercostomus petulans Parent, 1939 is lost, the species cannot be confidently identified and is here treated as a nomen dubium. As a result, the genus Hercostomus is formally excluded from the Neotropical Region. Paraclius

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35

BOROWIEC, L. "A new species of Calliaspis Dejean, 1837 (Coleoptera: Chrysomelidae: Cassidinae) from French Guyana." Zootaxa 148, no. 1 (2003): 1. http://dx.doi.org/10.11646/zootaxa.148.1.1.

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Calliaspis cerdai sp. nov. is described from French Guyana. It is similar to C. surinamensis Borowiec, 2000. Both species are the only members of the genus Calliaspis Dejean with a distinctly bicoloured, red and black, pronotum and elytra. A key to species of Calliaspis is provided.

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36

Trueb, Linda, and David Massemin. "The osteology and relationships of Pipa aspera (Amphibia: Anura: Pipidae), with notes on its natural history in French Guiana." Amphibia-Reptilia 22, no. 1 (2001): 33–54. http://dx.doi.org/10.1163/156853801750096169.

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AbstractRecent field and laboratory observations on Pipa aspera from central French Guiana have yielded new information on the morphology, ecology, reproductive habits, and relationships of this poorly known pipid frog from northeastern South America. Morphologically, P.aspera is most similar to P.arrabali, from which it differs in details of its cranial and postcranial osteology. The snout of P.aspera is less depressed than that of P.arrabali and the eye is proportionally larger in P. aspera than in P. arrabali; in addition, P. aspera has wide nostrils that are more narrowly separated from on

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37

GUIMARÃES, DANIEL LUCAS PRACIANO, and JOSÉ ALBERTINO RAFAEL. "Redescription of Nannicerus Maldonado-Capriles, 1997 (Hemiptera: Cicadellidae: Eurymelinae: Chiasmdolini) and description of two new species from North Brazil." Zootaxa 5169, no. 3 (2022): 286–96. http://dx.doi.org/10.11646/zootaxa.5169.3.5.

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Nannicerus Maldonado-Capriles, 1977, a previously monotypic genus known from Guyana, is newly recorded from Brazil based on specimens of N. gracilis Maldonado-Capriles, 1977 and two new species from Amazonas State, namely: N. curica sp. nov. and N. grandis sp. nov. A key to species is provided.

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Kok, Philippe J. R. "A redescription of Anomaloglossus praderioi (La Marca, 1998) (Anura: Aromobatidae: Anomaloglossinae), with description of its tadpole and call." Papéis Avulsos de Zoologia 50, no. 4 (2010): 51–68. http://dx.doi.org/10.1590/s0031-10492010000400001.

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Anomaloglossus praderioi was originally described as Colostethus praderioi by E. La Marca in 1998 on the basis of two male specimens. The present paper provides a redescription of the species on the basis of new material from Maringma Tepui in Guyana and an additional specimen from Sierra de Lema in Venezuela. The redescription includes descriptions of the tadpole and vocalisation. Anomaloglossus praderioi is a medium-sized species mainly distinguished from its known congeners in having Fingers I, II and IV equal in length, the tip of Finger IV barely reaching the base of the distal subarticul

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Roussilhon, Christian, Jean‐Michel Postal, and Pierre Ravisse. "Spontaneous Cryptococcosis of a Squirrel Monkey ( Saimiri sciureus ) in French Guyana." Journal of Medical Primatology 16, no. 1 (1987): 39–47. http://dx.doi.org/10.1111/j.1600-0684.1987.tb00315.x.

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ABRAHÃO, VITOR, JAN MOL, and MARIO DE PINNA. "A new species of Cetopsis from the Guiana Shield (Siluriformes: Cetopsidae: Cetopsinae)." Zootaxa 4664, no. 2 (2019): 221–32. http://dx.doi.org/10.11646/zootaxa.4664.2.4.

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A new species of Cetopsis is described from Guiana Shield drainages in Guyana and Suriname. The new species is found in the Konawaruk River and tributaries, Essequibo River basin, Guyana, and in the Mauritie Creek, tributary to the Tempati River, upper Commewijne River basin, Suriname. The new taxon can be distinguished from all congeners by a combination of features: dark spots on sides of the body eye-sized or larger, dark, bilobed patch at the base of the caudal fin, absence of a dark humeral spot, absence of dark pigmentation along the fin-membrane posterior to the first dorsal-fin ray, da

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RIVAS, GILSON A., CÉSAR R. MOLINA, GABRIEL N. UGUETO, TITO R. BARROS, CÉSAR L. BARRIO-AMORÓS, and PHILIPPE J. R. KOK. "Reptiles of Venezuela: an updated and commented checklist." Zootaxa 3211, no. 1 (2012): 1. http://dx.doi.org/10.11646/zootaxa.3211.1.1.

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We update the list of reptiles of Venezuela, reporting a total of 370 species from the country (four of these exotic), arrangedin 122 genera (one exotic), 30 families and three orders. Introduced species and dubious or erroneous records are discussed.Taxonomic, nomenclatural and distributional comments are provided when required. Considering species of probableoccurrence in the country (known to occur in Colombia, Brazil and Guyana at localities very close to the Venezuelan border) and still undescribed taxa, we estimate that the total number of species in Venezuela could exceed 400.Se actuali

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BOROWIEC, LECH. "Two new species of Charidotella Weise (Coleoptera: Chrysomelidae: Cassidinae: Cassidini), with a key to Charidotella sexpunctata group." Zootaxa 1586, no. 1 (2007): 59–66. http://dx.doi.org/10.11646/zootaxa.1586.1.6.

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Two new species of Charidotella s. str. are described: Charidotella moraguesi from French Guyana and Charidotella pacata from Bolivia and Brazil. Both belong to the group of species close to Charidotella sexpunctata Fabricius characterized by a dark pattern on the ventral surface of elytral disc. A key to the Charidotella sexpunctata group is given.

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Spreen, Thomas H., Bruce A. McCarl, and T. Kelley White. "Modeling the cattle Subsector: A Demonstration in Guyana." Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie 28, no. 1 (2008): 17–32. http://dx.doi.org/10.1111/j.1744-7976.1980.tb01929.x.

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-MCKENZIE,, JOENITTA ARTHUR, and ABDULLAH ADIL ANSARI. "Short Communication: The diversity of intestinal parasitic helminths in children of Silvercity, Linden, Guyana." Biodiversitas Journal of Biological Diversity 19, no. 4 (2018): 1289–93. http://dx.doi.org/10.13057/biodiv/d190415.

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Arthur-McKenzie J, Ansari AA. 2018. Short Communication: The diversity of intestinal parasitic helminths in children ofSilvercity, Linden, Guyana. Biodiversitas 19: 1289-1293. This study was conducted in the Silvercity area, Linden, Guyana andendeavored to determine the prevalence of intestinal parasitic helminths in children aged 5-15 and the level of awareness of theseparasitic infections among community members. Questionnaires were distributed to 30 households and 26 children which accounts for40% of the population aged 5-15 using a simple random sampling method and tested during the months

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WILKINSON, MARK, and PHILIPPE J. R. KOK. "A new species of Microcaecilia (Amphibia: Gymnophiona: Caeciliidae) from Guyana." Zootaxa 2719, no. 1 (2019): 35. http://dx.doi.org/10.11646/zootaxa.2719.1.3.

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A new species of caeciliid caecilian, Microcaecilia iyob sp. nov., is described based on a single specimen from Guyana that was previously assigned to M. unicolor (Duméril, 1864), a species known with certainty only from French Guiana. The new species differs from other Microcaecilia in its pattern of annulation and/or major features of the dentition.

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Taylor, Peter, Fernando Li, Ashley Holland, Michael Martin, and Adam E. Rosenblatt. "Growth rates of black caiman (Melanosuchus niger) in the Rupununi region of Guyana." Amphibia-Reptilia 37, no. 1 (2016): 9–14. http://dx.doi.org/10.1163/15685381-00003024.

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We conducted a study of black caiman (Melanosuchus niger) growth rates using data from a long-term mark-recapture study carried out in the Rupununi region of Guyana between 2005 and 2015. In contrast to previous studies, growth rates of black caiman declined with increasing size and this decline occurred more rapidly for females. Size-at-age models predicted that males and females reach asymptotic sizes of 178.2-189.0 cm SVL and 140.1-143.4 cm SVL, respectively. Our results suggest that growth rates of black caiman in the Rupununi region follow the same general patterns as for other crocodilia

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Bourne, Godfrey R. "Reproductive Behavior of Terrestrial Breeding Frogs Eleutherodactylus johnstonei in Guyana." Journal of Herpetology 31, no. 2 (1997): 221. http://dx.doi.org/10.2307/1565390.

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SHAFFER, CHRISTOPHER A. "Feeding Ecology of Northern Bearded Sakis (Chiropotes sagulatus) in Guyana." American Journal of Primatology 75, no. 6 (2013): 568–80. http://dx.doi.org/10.1002/ajp.22134.

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Alonso-Zarazaga, Miguel A. "Un nuevo género de Apioninae de Guyana basado en un tipo de Fabricius (Coleoptera, Brentidae)." Graellsia 76, no. 2 (2020): e118. http://dx.doi.org/10.3989/graellsia.2020.v76.280.

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Se describe un nuevo género Pnoia gen. nov. basándose en el único sintipo conocido de Attelabus femoralis Fabricius, 1801, de Guyana. Este único sintipo se designa como lectotipo. Se propone la nueva combinación Pnoia femoralis y, además, Pnoia latipes (Sharp, 1891), comb. nov. se propone para Apion latipes. Se discuten los caracteres del nuevo género y se sitúa en la subtribu Piezotrachelina.

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KOK, PHILIPPE J. R., D. BRUCE MEANS, and FRANKY BOSSUYT. "A new highland species of Pristimantis Jiménez de la Espada, 1871 (Anura: Strabomantidae) from the Pantepui region, northern South America." Zootaxa 2934, no. 1 (2011): 1. http://dx.doi.org/10.11646/zootaxa.2934.1.1.

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A new strabomantid frog of the genus Pristimantis Jiménez de la Espada, 1871 is described from the Eastern Pantepui Region, Guiana Shield, northern South America. The new species, Pristimantis aureoventris sp. nov., is known so far from two neighbouring tepuis, namely Wei Assipu Tepui (type locality) at the border between Guyana and Brazil and Mount Roraima in Guyana, and occurs between 2210–2305 m elevation. The new taxon is distinguished from all known congeners by the following combination of characters: Finger I < II; tympanum distinct; basal webbing between Toes IV-V; broad lateral fri

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