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Journal articles on the topic 'Univoltine'

Author: Grafiati

Published: 3 June 2025

Last updated: 19 July 2025

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1

Hansen, E. Matthew, and Barbara J. Bentz. "Comparison of reproductive capacity among univoltine, semivoltine, and re-emerged parent spruce beetles (Coleoptera: Scolytidae)." Canadian Entomologist 135, no. 5 (2003): 697–712. http://dx.doi.org/10.4039/n02-109.

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AbstractNew spruce beetle, Dendroctonus rufipennis (Kirby), adults of univoltine and semivoltine life cycles, as well as re-emerged parent beetles, were laboratory-tested for differences in reproductive capacity and brood characteristics. Parameters measured from the three groups include dry weight, lipid content, and egg production. Brood characteristics measured include egg length, development rates, and survival densities. Although there were some differences in dry weight and lipid content, females from the univoltine, semivoltine, and re-emerged parent groups did not greatly differ in egg

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2

Hudon, M., R. E. Pitblado, R. I. Hamilton, G. Bourgeois, S. Kuzir, and R. Girgis. "Response of maize inbred lines to two European corn borer (Ostrinia nubilalis) strains in Canada." Phytoprotection 72, no. 2 (2005): 69–76. http://dx.doi.org/10.7202/706005ar.

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In 1986 and 1987, six maize inbred lines (CM47, A619, F2, CM107, CM7, and A654) were evaluated at four locations across Ontario and Quebec for their resistance to artificially infested univoltine and lst generation bivoltine strains of the European corn borer, Ostrinia nubilalis. Three criteria were used: leaf feeding, total plant damage at harvest and length of tunnels/plant height ratio. Substantial interactions in borer damage measurements were observed between locations and years, but inbred reaction was relatively consistent. For all criteria, the univoltine strain often caused significan

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3

Rudramuni, Kiran, Shiv Kumar, Bharath K. Neelaboina, Mir N. Ahmad, and Sukhen R. Chowdhury. "Atypical voltinism in mulberry silkworm Bombyx mori L., 1758 (Lepidoptera: Bombycidae) races Barapat and Barapolu." Entomological Communications 3 (January 4, 2021): ec03001. http://dx.doi.org/10.37486/2675-1305.ec03001.

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The mulberry silkworm, Bombyx mori L., 1758 (Lepidoptera: Bombycidae) is classified as univoltine, bivoltine, and polyvoltine based on the annual brood frequency. Voltinism in B. mori is characterized by the occurrence of embryonic diapause (facultative and obligatory diapause). Univoltine silkworms suited to cold and temperate regions lay diapausing eggs and polyvoltine silkworms suited to tropical regions lay non-diapausing eggs. In contrast, the occurrence of diapause in bivoltine silkworms is influenced by the environment. In addition to the difference in the occurrence of embryonic diapau

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4

Raczyński, Mateusz, Robby Stoks, Frank Johansson, Kamil Bartoń, and Szymon Sniegula. "Phenological Shifts in a Warming World Affect Physiology and Life History in a Damselfly." Insects 13, no. 7 (2022): 622. http://dx.doi.org/10.3390/insects13070622.

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Under climate warming, temperate ectotherms are expected to hatch earlier and grow faster, increase the number of generations per season, i.e., voltinism. Here, we studied, under laboratory conditions, the impact of artificial warming and manipulated hatching dates on life history (voltinism, age and mass at emergence and growth rate) and physiological traits (phenoloxidase (PO) activity at emergence, as an indicator of investment in immune function) and larval survival rate in high-latitude populations of the damselfly Ischnura elegans. Larvae were divided into four groups based on crossing t

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5

Iwasa, Yoh, Atsushi Yamauchi, and Shinji Nozoe. "Optimal seasonal timing of univoltine and bivoltine insects." Ecological Research 7, no. 1 (1992): 55–62. http://dx.doi.org/10.1007/bf02348597.

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6

Gerard, P. J. "Synchronisation of the parasitoid Centrodora scolypopae with its host Scolypopa australis." New Zealand Plant Protection 57 (August 1, 2004): 191–95. http://dx.doi.org/10.30843/nzpp.2004.57.6909.

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Eggs of the univoltine passionvine hopper Scolypopa australis Walker (Homoptera Ricaniidae) are parasitised by Centrodora scolypopae Valentine (Hymenoptera Aphelinidae) The life cycle of the parasitoid and synchronisation with its host was studied in a gully near Hamilton over four years The parasitoid was usually univoltine overwintering in diapause as a prepupa and pupating when host adults were present in midsummer However above average summer temperatures in 1981 resulted in up to 60 of the parasitoid population on a sunny slope with a NE aspect pupating before winter demonstrating that th

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7

Rank, G. H., and F. P. Rank. "DIAPAUSE INTENSITY IN A FRENCH UNIVOLTINE AND A SASKATCHEWAN COMMERCIAL STRAIN OF MEGACHILE ROTUNDATA (FAB.)." Canadian Entomologist 121, no. 2 (1989): 141–48. http://dx.doi.org/10.4039/ent121141-2.

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AbstractThe relative diapause intensity of a French univoltine and Saskatchewan commercial strain of the alfalfa leafcutting bee, Megachile rotundata (Fab.), was evaluated over a 3-year period. Prepupae from both strains underwent diapause development at 10 °C for different time periods. Diapause intensity was estimated by scoring days to emergence after initiating incubation at three different times in each of the 3 years: fall incubation (immediate post harvest); winter incubation; and spring incubation. In all comparisons made, the univoltine strain had a significantly increased diapause in

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8

Iwasa, Yoh. "Asynchronous pupation of univoltine insects as evolutionarily stable phenology." Researches on Population Ecology 33, no. 2 (1991): 213–27. http://dx.doi.org/10.1007/bf02513550.

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9

Park, Ikju, and Lincoln Smith. "Topical Application of Synthetic Hormones Terminated Reproductive Diapause of a Univoltine Weed Biological Control Agent." Insects 12, no. 9 (2021): 834. http://dx.doi.org/10.3390/insects12090834.

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Classical biological control is an important method for controlling invasive alien weeds. Univoltine insects can be highly effective biological control agents of annual weeds because they are well synchronized with their host plant. However, having only one generation per year makes it difficult and slow to multiply them in the laboratory for initial field releases. If it were possible to terminate reproductive diapause early, then we could rear multiple generations per year, which would greatly increase annual production. We used a recently approved biocontrol agent, Ceratapion basicorne (a u

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10

Gaytán, Álvaro, Igor Drobyshev, Tatiana Klisho, Karl Gotthard, and Ayco J. M. Tack. "Parasitism rate differs between herbivore generations in the univoltine, but not bivoltine, range." PLOS ONE 18, no. 11 (2023): e0294275. http://dx.doi.org/10.1371/journal.pone.0294275.

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With climate change, plant-feeding insects increase their number of annual generations (voltinism). However, to what degree the emergence of a new herbivore generation affects the parasitism rate has not been explored. We performed a field experiment to test whether the parasitism rate differs between the first and the second generations of a specialist leaf miner (Tischeria ekebladella), both in the naturally univoltine and bivoltine parts of the leaf miner’s distribution. We found an interactive effect between herbivore generation and geographical range on the parasitism rate. The parasitism

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11

Urban, Jaroslav. "Remarcable, however biologically unknown sawfly Craesus latipes (Villaret) (Hymenoptera, Tenthredinidae)." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 60, no. 3 (2012): 179–98. http://dx.doi.org/10.11118/actaun201260030179.

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In 2009 to 2011, a rather frequent occurrence of Craesus latipes (Vill.) was noted on Betula pendula Roth. in the Brno region. Part of the sawfly population showed bivoltine and part univoltine development. At the bivoltine development, imagoes occurred for the first time in the second half of May and at the beginning of June, for the second time in August. At the univoltine development, imagoes flew in the second half of June and in the first half of July. Females lay eggs into longitudinal slits in veins on the abaxial face of leaves. During several days (in the laboratory already during fir

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12

Maynou, Xavier, and Ricard Martín. "Phenology in the Odonata assemblage of a Mediterranean stream in the north-eastern Iberian Peninsula." Odonatologica 48, no. 1/2 (2019): 27–48. https://doi.org/10.5281/zenodo.2677686.

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We investigated the Odonata species composition of larvae, final instar (F-0) exuviae, and adults occurring in a sequence of two different mesohabitats − pool and riffle − in a short stretch of a Mediterranean stream running down the Catalonian Pre-Coastal mountain range (north-eastern Iberian Peninsula). We sampled them during the period 2017–2018 and recorded adults of 26 taxa and confirmed by the presence of final instar exuviae that at least 21 were breeding successfully in that environment. We describe, for the first time for this region and habitat type, larval gro

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13

Garcia-Romera, Carlos, and Jose Barrientos. "Seasonal and circadian activity patterns of scuttle fly assemblages (Diptera: Phoridae) in two habitats on a Mediterranean mountain." Entomologica Fennica 29, no. 3 (2018): 125–40. http://dx.doi.org/10.33338/ef.77281.

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Seasonal and circadian activity of scuttle fly assemblages in beech forests and highland scrublands was analysed. The scuttle flies were collected in the Montseny Natural Park (Catalonia, Spain). Seasonal fluctuations and the relation of some meteorological variables were assessed using window traps, emergence traps and pitfall traps, while circadian activity was assessed using water traps and light traps. Scuttle fly density and species richness in both habitats showed an activity peak in July. Diversity peaks were found in spring and autumn in beech forest and in summer in scrublands. Temper

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14

Toledo, Mario. "Considerazioni preliminari sui cicli vitali e strategie riproduttive di alcune specie di Dytiscidae nella pianura padana (Coleoptera)." Memorie della Società Entomologica Italiana 85, no. 1 (2006): 187. http://dx.doi.org/10.4081/memoriesei.2006.187.

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Le osservazioni effettuate su 25 specie provenienti da 12 località della pianura padana, hanno permesso di tracciare un primo, provvisorio, profilo della biologia riproduttiva e dei cicli vitali delle comunità di Dytiscidae in questo territorio. L’esame dei cicli vitali è stato effettuato utilizzando le categorie bionomiche di Nilsson (1986a) per il nord Europa, comparandone le definizioni con le situazioni riscontrate in pianura padana, dove finora tre tipi di cicli vitali sono stati riscontrati: i cicli numero 1), 4) e 5) sensu Nilsson (1986a). Il primo ciclo alle nostre latitudini si è rive

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15

Ostlie, K. R., J. Luedeman, P. Price, M. Jharco, and George Nelson. "Evaluation of Transgenic Corn Against European Corn Borer, 1997D." Arthropod Management Tests 23, no. 1 (1998): 378. http://dx.doi.org/10.1093/amt/23.1.378.

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Abstract This experiment was conducted to assess the per formance of Bacillus thuringiensis transgenic corn hybrids (&lt;95-day RM) and comparable non-Bt hybrids against a natural ECB infestation in west centra Minnesota. This area contains a mixture of univoltine and multivoltine biotypes. Treatments included 3 non-Bt hybrids (Ciba 4144, NK 2555, NK 3030) anc their isogenic counterparts (Max 357, NK 2555Bt, NK 3030Bt) arranged in a RCB design with 6 replications. Plots, each measuring 50 ft by 8 rows (30-inch row spacing), were planted on 19 May at a rate of 30,000 seeds per acre using a

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16

Rank, G. H., and F. P. Rank. "CHALKBROOD RESISTANCE IN A UNIVOLTINE STRAIN OF THE ALFALFA LEAFCUTTING BEE." Acta Horticulturae, no. 288 (January 1991): 164–68. http://dx.doi.org/10.17660/actahortic.1991.288.22.

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17

McClanan, Michelle E., Shirley Luckhart, and Douglas G. Pfeiffer. "Wolbachia Strains Associated with Univoltine and Multivoltine Plum Curculios (Coleoptera: Curculionidae)." Journal of Entomological Science 39, no. 1 (2004): 132–35. http://dx.doi.org/10.18474/0749-8004-39.1.132.

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18

Schultz, Peter B., Eric R. Day, Adria Bordas, and Richard Bean. "Biology and Distribution of Pryeria sinica, a New Pest of Euonymus Found in Virginia and Maryland." Plant Health Progress 7, no. 1 (2006): 49. http://dx.doi.org/10.1094/php-2006-1127-01-br.

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Pryeria sinica is a newly discovered foliar feeding insect previously known only from Asia that feeds on Euonymus and Celastrus. It is univoltine in Maryland and Virginia with egg hatch occurring in mid-March. Larvae initially feed as leaf skeletonizers, then later as leaf notchers. Accepted for publication 7 August 2006. Published 27 November 2006.

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19

Hansen, E. Matthew, Barbara J. Bentz, and David L. Turner. "Temperature-based model for predicting univoltine brood proportions in spruce beetle (Coleoptera: Scolytidae)." Canadian Entomologist 133, no. 6 (2001): 827–41. http://dx.doi.org/10.4039/ent133827-6.

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AbstractThe spruce beetle, Dendroctonus rufipennis (Kirby), has possible life cycles of 1 or 2 years. Empirical and experimental evidence suggest that temperature is the primary regulator of these life-history pathways. These different life cycles potentially result in substantial differences in population dynamics and subsequent spruce mortality. A multiyear field study was conducted in Utah, Colorado, and Alaska, to monitor spruce beetle development under a variety of field conditions with concurrent air temperature measurements. This information was used to model the tree- or stand-level pr

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20

Cameron, E. Alan, and R. W. Stark. "VARIATIONS IN THE LIFE CYCLE OF THE LODGEPOLE TERMINAL WEEVIL, PISSODES TERMINALIS HOPPING (COLEOPTERA: CURCULIONIDAE), IN CALIFORNIA,." Canadian Entomologist 121, no. 9 (1989): 793–801. http://dx.doi.org/10.4039/ent121793-9.

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AbstractThe lodgepole terminal weevil, Pissodes terminalis Hopping (Coleoptera: Curculionidae), is widely distributed in western North America on three races of lodgepole pine (Pinus contorta Dougl.), as well as jack pine (P. banksiana Lamb.), Bishop pine (P. muricata D. Don.), and Monterey pine (P. radiata D. Don.).Three types of life cycle, one with three subtypes, are identified. In the univoltine type 1 cycle, adults emerge from attacked leaders in the fall, overwinter probably in the ground, and re-emerge in the spring to lay eggs in elongating leaders. Larval and pupal development is com

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21

Dalin, Peter. "Diapause induction and termination in a commonly univoltine leaf beetle (Phratora vulgatissima)." Insect Science 18, no. 4 (2011): 443–50. http://dx.doi.org/10.1111/j.1744-7917.2011.01417.x.

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22

Fenberg, Phillip B., Angela Self, John R. Stewart, Rebecca J. Wilson, and Stephen J. Brooks. "Exploring the universal ecological responses to climate change in a univoltine butterfly." Journal of Animal Ecology 85, no. 3 (2016): 739–48. http://dx.doi.org/10.1111/1365-2656.12492.

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23

Krafsur, E. S. "Gene Flow between Univoltine and Semivoltine Northern Corn Rootworm (Coleoptera: Chrysomelidae) Populations." Annals of the Entomological Society of America 88, no. 5 (1995): 699–704. http://dx.doi.org/10.1093/aesa/88.5.699.

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24

Digweed, Scott C. "SEASONAL ACTIVITY OF THE BIRCH SKELETONIZER, BUCCULATRIX CANADENSISELLA CHAMBERS (LEPIDOPTERA: LYONETIIDAE), IN ALBERTA." Canadian Entomologist 130, no. 5 (1998): 579–82. http://dx.doi.org/10.4039/ent130579-5.

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AbstractThe birch skeletonizer Bucculatrix canadensisella Chambers was univoltine in central Alberta in 1992 and 1993. Adults occurred from early June until the end of July, and larvae were present from early July on, co-occurring with larvae of the ambermarked birch leafminer, Profenusa thomsoni (Konow). Larval B. canadensisella densities were higher in 1992 than in 1993, and were higher on rural trees at George Lake than on urban ones in Edmonton.

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Salom, S. M., L. T. Kok, A. B. Lamb, and C. Jubb. "Laboratory Rearing ofLaricobius nigrinus(Coleoptera: Derodontidae): A Predator of the Hemlock Woolly Adelgid (Hemiptera: Adelgidae)." Psyche: A Journal of Entomology 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/936519.

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Coleopteran species are biological control agents of numerous invasive pests.Laricobius nigrinus(Coleoptera: Derodontidae), a predaceous, univoltine species, spends the summer aestivating but is active for the rest of the year.Laricobius nigrinuspossesses many essential attributes for effective biological control of the hemlock woolly adelgid (Hemiptera: Adelgidae). The predator must be reared in large numbers for field releases. We describe some of the studies that led to the successful procedures currently used for mass rearingL. nigrinus.

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Niva, Cintia C., and Miriam Becker. "Embryonic external morphogenesis of Rhammatocerus conspersus (Bruner) (Orthoptera: Acrididae: Gomphocerinae) and determination of the diapausing embryonic stage." Anais da Sociedade Entomológica do Brasil 27, no. 4 (1998): 557–83. http://dx.doi.org/10.1590/s0301-80591998000400010.

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The grasshopper Rhammatocerus conspersus (Bruner) (Orthoptera: Acrididae: Gomphocerinae) is an occasional pest in pasturelands of Rio Grande do Sul State. It is a univoltine species with an embryonic diapause. Nymphal and adult stages occur during the warmer months (November-March). Eggs were dissected periodically for characterization of embryonic external morphogenesis in 1994 and 1995. Ten embryonic stages were illustrated. Two diapausing stages were verified in R. conspersus: one at 25% and another at 50% of total embryonic development.

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27

Smirle, Michael J., D. Thomas Lowery, and Cheryl L. Zurowski. "Variation in response to insecticides in two species of univoltine leafrollers (Lepidoptera: Tortricidae)." Canadian Entomologist 135, no. 1 (2003): 117–27. http://dx.doi.org/10.4039/n02-052.

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AbstractPopulations of fruittree leafroller, Archips argyrospila (Walker), and European leafroller, Archips rosana L., were obtained from eight sites in the Okanagan Valley, British Columbia, and assayed for their responses to five insecticides using a leaf-disk bioassay and neonate larvae. Lethal concentration ratios (LCR values) were calculated for all populations compared with the most susceptible strain, and significant variation was detected in both species. LCR values ranged from 1.04 to 9.06 for azinphosmethyl, from 1.29 to 53.15 for tebufenozide (Confirm®), from 1.85 to 24.69 for metho

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28

Schaub, L., S. Breitenmoser, J. Derron, and B. Graf. "Development and validation of a phenological model for the univoltine European corn borer." Journal of Applied Entomology 141, no. 6 (2016): 421–30. http://dx.doi.org/10.1111/jen.12364.

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29

BABA, MINORU, and HIROYUKI TAKAOKA. "Oviposition habits of a univoltine blackfly, Prosimulium kiotoense (Diptera: Simuliidae), in Kyushu, Japan." Medical and Veterinary Entomology 5, no. 3 (1991): 351–58. http://dx.doi.org/10.1111/j.1365-2915.1991.tb00560.x.

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30

Sota, Teiji. "Univoltine and bivoltine life cycles in insects: A model with density-dependent selection." Researches on Population Ecology 30, no. 1 (1988): 135–44. http://dx.doi.org/10.1007/bf02512608.

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31

Zhao, Linchuan, and Liangen Shi. "Metabolism of hydrogen peroxide in univoltine and polyvoltine strains of silkworm (Bombyx mori)." Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology 152, no. 4 (2009): 339–45. http://dx.doi.org/10.1016/j.cbpb.2008.12.014.

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32

Boivin, Guy. "ANAPHES SORDIDATUS (GIRAULT) (HYMENOPTERA: MYMARIDAE), AN EGG PARASITE OF THE CARROT WEEVIL, LISTRONOTUS OREGONENSIS (LE CONTE)." Canadian Entomologist 118, no. 4 (1986): 393–94. http://dx.doi.org/10.4039/ent118393-4.

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The carrot weevil, Listronotus oregonensis (Le Conte), is an important pest of carrot and celery in eastern Canada (Stevenson 1985). In Quebec, it is univoltine and overwinters as adults (Boivin 1985). At present, the only way to control this pest is with chemical insecticides applied either as granules at seeding time to control the larvae or as foliar sprays to control the adults before they start to oviposit. If integrated pest management (IPM) programs are to be applied to crops attacked by the carrot weevil, additional control methods are needed.

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Baran, Tomasz. "The immature stages of Elachista zonulae (Sruoga, 1992) (Lepidoptera: Elachistidae)." Entomologica Fennica 20, no. 4 (2009): 239–44. http://dx.doi.org/10.33338/ef.84484.

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The morphology of larva and pupa, as well as larval mines of Elachista zonulae (Sruoga, 1992) are described and illustrated for the first time. Carex firma Host is reported as a new host plant ofthe species; previously only Carex sempervirens Vill. was known to be host plant of E. zonulae. Some information on life history of this elachistid moth is also provided. The mature larva is 4.5—5.5 mm long. Pupation takes place usually at base of leaf blade of the food plant. The species is univoltine and hibernates as young larva.

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YASUNAGA, TOMOHIDE. "Azumamiris vernalis: a new genus and species of Mirini from central Japan (Heteroptera: Miridae: Mirinae)." Zootaxa 2601, no. 1 (2010): 45. http://dx.doi.org/10.11646/zootaxa.2601.1.4.

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Azumamiris, a new genus of mirine plant bug, is established to accommodate a new species, A. vernalis, which has occasionally been found in central Honshu, Japan. This univoltine mirine was confirmed to be associated with a gramineous dwarf bamboo, Pleioblastus chino (Fr. et Sav.) Makino, and the adults appear only in early May. The final instar nymph is also diagnosed and described. The present new genus is assumed to be allied to Stenotus Jakovlev known from the Old World and to continental Chinese Elthemidea Zheng. A key to the genera under discussion is provided.

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35

TAUBER, MAURICE J., CATHERINE A. TAUBER, and JAMES R. NECHOLS. "Life history of Galerucella nymphaeae and implications of reproductive diapause for rearing univoltine chrysomelids." Physiological Entomology 21, no. 4 (1996): 317–24. http://dx.doi.org/10.1111/j.1365-3032.1996.tb00872.x.

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36

FORBES, ANDREW A., KIRSTEN S. PELZ-STELINSKI, and RUFUS ISAACS. "Transfer of life-history phenology from mothers to progeny in a solitary univoltine parasitoid." Physiological Entomology 35, no. 2 (2010): 192–95. http://dx.doi.org/10.1111/j.1365-3032.2010.00725.x.

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37

Wermelinger, B., C. Epper, M. Kenis, S. Ghosh, and O. Holdenrieder. "Emergence patterns of univoltine and bivoltine Ips typographus (L.) populations and associated natural enemies." Journal of Applied Entomology 136, no. 3 (2011): 212–24. http://dx.doi.org/10.1111/j.1439-0418.2011.01629.x.

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38

SNIEGULA, SZYMON, MARIA J. GOLAB, and FRANK JOHANSSON. "A large-scale latitudinal pattern of life-history traits in a strictly univoltine damselfly." Ecological Entomology 41, no. 4 (2016): 459–72. http://dx.doi.org/10.1111/een.12314.

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Taira, Akikazu. "Life cycles and larval and pupal habitats of eleven Japanese Rhyacophila (Trichoptera) species at the mountain streams in central Honshu." Contributions to Entomology 73, no. 2 (2023): 181–94. http://dx.doi.org/10.3897/contrib.entomol.73.e108102.

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The life cycles and microhabitats involved in aquatic stages of eleven Rhyacophila Stephens, 1836 species living in two neighboring Japanese mountain streams in Nara Prefecture, central Honshu, were investigated. Eight species had univoltine life cycles; seven species had spring to early summer emergence seasons. One species had an autumnal emergence. Four univoltine species had periods where no larvae or pupae were collected in aquatic stages, possibly a period of egg diapause. Three species had bivoltine life cycles, with early summer and autumn emergence seasons. Rhyacophila nipponica Iwata

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Fontaine, Mark S., and John L. Foltz. "ADULT SURVIVORSHIP, FECUNDITY, AND FACTORS AFFECTING LABORATORY OVIPOSITION OF PISSODES NEMORENSIS (COLEOPTERA: CURCULIONIDAE)." Canadian Entomologist 117, no. 12 (1985): 1575–78. http://dx.doi.org/10.4039/ent1171575-12.

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The deodar weevil, Pissodes nemorensis Germar, is a vector and wounding agent associated with pitch canker fungus, Fusarium moniliforme Sheld. var. subglutinans Wr. & Reink., in the southeastern United States (Blakeslee et al. 1981). This univoltine weevil breeds in southern pines that have been stressed by factors such as fire, lightning, or mechanical injury (Baker 1972). The adults feed on phloem after chewing through the outer bark. Females deposit eggs in some of these feeding pits and then plug the hole with macerated phloem (Atkinson 1979). Larvae tunnel under the bark and feed on p

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Wiggins, Glenn B., and Nancy A. Erman. "ADDITIONS TO THE SYSTEMATICS AND BIOLOGY OF THE CADDISFLY FAMILY UENOIDAE (TRICHOPTERA)." Canadian Entomologist 119, no. 10 (1987): 867–72. http://dx.doi.org/10.4039/ent119867-10.

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AbstractA description is given for the male, female, and larva of Farula praelonga sp. nov. and for the female and larva of Neothremma genella Denning. Farula praelonga sp. nov. is distinctive in having an exceptionally long internal branch of segment X. The female of Neothremma genella is the only female yet known in that genus to have greatly reduced ventrolateral lobes of sternum IX. Modifications are made to the keys previously published for adults of Farula and Neothremma to incorporate this new information. These two species occur together in abundance; they are univoltine and have emerg

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Noronha, Christine, and Conrad Cloutier. "GROUND AND AERIAL MOVEMENT OF ADULT COLORADO POTATO BEETLE (COLEOPTERA: CHRYSOMELIDAE) IN A UNIVOLTINE POPULATION." Canadian Entomologist 131, no. 4 (1999): 521–38. http://dx.doi.org/10.4039/ent131521-4.

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AbstractPitfall and screen traps were used around potato Solanum tuberosum L. (Solanaceae) plots to detect directional patterns of prediapause (two seasons) and postdiapause (one season) movement in a univoltine population of the Colorado potato beetle, Leptinotarsa decemlineata (Say), from Quebec. Prediapause beetles were sampled for diapause readiness using a feeding–digging test. In 1994, a plot left unprotected from the beetle (moderately defoliated) was monitored. In 1995, movement around a plot left unprotected from the beetle (severely defoliated) was compared to that from a plot protec

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Rank, G. H., F. P. Rank, and R. Watts. "Chalkbrood (Ascosphaera aggregataSkou.) resistance of a univoltine strain of the alfalfa leafcutting bee,Megachile rotundataF." Journal of Applied Entomology 109, no. 1-5 (1990): 524–27. http://dx.doi.org/10.1111/j.1439-0418.1990.tb00085.x.

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Takeuchi, Masatoshi, Miyuki Satoh, Kazuhiro Iijima, and Masato Tamura. "Reproductive Diapause in Univoltine Phytophagous Lady Beetle, Epilachna admirabilis (Coleoptera: Coccinellidae) in Kanagawa Prefecture, Japan." Japanese Journal of Applied Entomology and Zoology 52, no. 3 (2008): 142–45. http://dx.doi.org/10.1303/jjaez.2008.142.

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Sokolova, I. V. "Univoltine seasonal cycle and obligate diapause in the noctuid moth Charanyca trigrammica Hufn. (Lepidoptera, Noctuidae)." Entomological Review 87, no. 7 (2007): 793–98. http://dx.doi.org/10.1134/s0013873807070019.

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Ayre, G. L., and R. J. Lamb. "LIFE HISTORIES, FLIGHT PATTERNS, AND RELATIVE ABUNDANCE OF NINE CUTWORMS (LEPIDOPTERA: NOCTUIDAE) IN MANITOBA." Canadian Entomologist 122, no. 6 (1990): 1059–70. http://dx.doi.org/10.4039/ent1221059-11.

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AbstractSix of the nine most common indigenous species of noctuid moths caught in a light trap at Glenlea, Man., over an 11-year period were univoltine and three were typically bivoltine but sometimes trivoltine. For the univoltine species, the day of peak catch and the day of 50% catch differed only by 3 days or less during 11 years. The timing of flight periods of Feltia jaculifera (Gn.), F. herilis (Grt.), Agrotis venerabilis Wlk., and Nephelodes minians Gn. were not influenced by the degree-days above 10 °C and the standard deviation of the date of 50% catch for these species was within 5–

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47

Bunn, SE. "Life histories of some Benthic invetebrates form streams of the Northern Jarrah Forest, Western Australia." Marine and Freshwater Research 39, no. 6 (1988): 785. http://dx.doi.org/10.1071/mf9880785.

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Life history patterns of thirteen species of invertebrates from streams of the northern jarrah forest were examined over a 1-year period. Five species had univoltine cycles with a single cohort and demonstrated a high degree of synchrony of larval development and a restricted period of adult emergence. Two species of Leptophlebiidae also had univoltine cycles but showed the more typical pattern of Australian mayflies, with extended recruitment, multiple overlapping cohorts and a long period of adult emergence. Uroctena sp., a small gammarid, had a generation time of 1 year but showed considera

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Tanaka, Seiji. "Geographic variation in body size of the migratory locust Locusta migratoria (Orthoptera, Acrididae): Masaki’s cline and phase polyphenism." Journal of Orthoptera Research 33, no. 1 (2024): 27–40. http://dx.doi.org/10.3897/jor.33.107242.

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Adults of the migratory locust Locusta migratoria (Linnaeus, 1758) were collected in the Japanese Archipelago, which extends from the Ryukyu subtropical region to the Hokkaido cool-temperate region, covering more than 2,500 km. A saw-toothed pattern was observed in body size along the latitudinal or annual mean temperature gradient, which is similar to Masaki’s clines initially described for crickets. The latitudinal cline of locusts was also observed in the laboratory, suggesting that this cline was primarily due to genetic variation. In the northern univoltine zone, locust body size increase

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Taira, Akikazu. "Life cycles and larval and pupal habitats of eleven Japanese Rhyacophila (Trichoptera) species at the mountain streams in central Honshu." Contributions to Entomology 73, no. (2) (2023): 181–94. https://doi.org/10.3897/contrib.entomol.73.e108102.

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The life cycles and microhabitats involved in aquatic stages of eleven <i>Rhyacophila</i> Stephens, 1836 species living in two neighboring Japanese mountain streams in Nara Prefecture, central Honshu, were investigated. Eight species had univoltine life cycles; seven species had spring to early summer emergence seasons. One species had an autumnal emergence. Four univoltine species had periods where no larvae or pupae were collected in aquatic stages, possibly a period of egg diapause. Three species had bivoltine life cycles, with early summer and autumn emergence seasons. <i>Rhyacophila nippo

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50

Tanaka, Seiji. "Geographic variation in body size of the migratory locust Locusta migratoria (Orthoptera, Acrididae): Masaki's cline and phase polyphenism." Journal of Orthoptera Research 33, no. (1) (2024): 27–40. https://doi.org/10.3897/jor.33.107242.

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Adults of the migratory locust <i>Locusta migratoria</i> (Linnaeus, 1758) were collected in the Japanese Archipelago, which extends from the Ryukyu subtropical region to the Hokkaido cool-temperate region, covering more than 2,500 km. A saw-toothed pattern was observed in body size along the latitudinal or annual mean temperature gradient, which is similar to Masaki's clines initially described for crickets. The latitudinal cline of locusts was also observed in the laboratory, suggesting that this cline was primarily due to genetic variation. In the northern univoltine zone, locust body size i

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