Entomological Communications

(337 Artigos indexados)

Armadilha atrativa padronizada e de baixo custo para coleta de Diptera (Insecta) atraídos por substratos proteicos - (2025)

Alex S. B. de Souza, Nelson L. M. Fernandes

Volume: 7 - Issue: 0

Resumo. The use of baited traps is essential for sampling necrophagous Diptera Linnaeus, 1758 in both ecological and forensic studies. Ferreira's trap is a widely used model in Brazil; however, traditional versions can present logistical challenges under field conditions. This study proposes a simple, cost-effective modification to the original design, using standard plastic honey jars as the new apparatus. The modified trap is characterized by its portability, ease of assembly, and the ability to allow rapid specimen retrieval. The effectiveness of the modified trap was successfully demonstrated during field collections. The system is designed for use by a single researcher and has proven to enable efficient specimen capture comparable to that achieved with classical traps. This design is especially recommended for sampling blowflies and other Diptera attracted to decomposing organic matter.

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Armored Scale Insects (Hemiptera: Diaspididae) on Dypsis lutescens and Phoenix roebelenii (Arecaceae) in Urban Environments of Costa Rica - (2025)

Minor V. Solano-Gutiérrez, Paul Hanson

Volume: 7 - Issue: 0

Resumo. Armored scales (Hemiptera: Diaspididae) were collected from Dypsis lutescens (H. Wendl) Beentje & J. Dransf., 1995, and Phoenix roebelenii O’Brien, 1889, in urban Costa Rica. Lopholeucaspis cockerelli (Grandpré & Charmoy, 1899), previously known only from intercepted plant material, was found on both palms (P. roebelenii—new host record). Pseudischnaspis bowreyi (Cockerell, 1893), also previously recorded only from interceptions, was identified on both species (new host records). Ischnaspis longirostris (Signoret, 1882) was identified on both palms, Selenaspidus articulatus (Morgan, 1889) on P. roebelenii (new host record), Hemiberlesia cyanophylli Signoret, 1869 on P. roebelenii (new host record) and D. lutescens, H. palmae (Cockerell, 1893) on P. roebelenii (new host record) and D. lutescens, Pinnaspis strachani (Cooley, 1899) on D. lutescens, Pinnaspis apidistrae (Signoret, 1869) on D. lutescens and P. roebelenii (new host record), Diaspis boisduvalii Signoret, 1869 on P. roebelenii, Chrysomphalus dictyospermi (Morgan, 1889) on both palms (new host records), Lepidosaphes gloverii (Packard, 1869) on P. roebelenii (new host record), and Aspidiotus destructor Signoret, 1869 on both palms. Among parasitoids, Aphytis sp. (Hymenoptera: Aphelinidae) was reared from C. dictyospermi and I. longirostris, and Signiphora sp. (Hymenoptera: Signiphoridae) from H. cyanophylli and I. longirostris. This is the first record of a species of Signiphora Ashmead, 1880 parasitizing I. longirostris. The identified armored scales are highly polyphagous and not exclusive to palms, highlighting the need for further research on their diversity and ecology, as well as their natural enemies, in tropical urban environments.

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Breaking a 120-year gap: Isosomodes kopenawai sp. nov. (Hymenoptera, Eurytomidae), a newly discovered species from the Brazilian Amazon Rainforest - (2025)

Nelson W. Perioto, Rogéria I. R. Lara

Volume: 7 - Issue: 0

Resumo. In this study, Isosomodes kopenawai Perioto & Lara, sp. nov. (Hymenoptera, Eurytomidae) is described and illustrated, based on a female specimen collected near Manaus, Amazonas, Brazil. The new species is distinguished by a combination of morphological characters, including head coloration (brown to orange), mesosomal orange pigmentation, and propodeal structure (foveate with a deep, narrow, laterally carinate median channel). An updated identification key to Isosomodes species is provided.

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Checklist of Ganaspis Förster, 1869 species from Brazil, with a new record and redescription of Ganaspis hookerii Crawford, 1913 (Hymenoptera: Figitidae) - (2025)

Fabiana E. Gallardo, Vanina A. Reche, Nikolas G. Cipola

Volume: 7 - Issue: 0

Resumo. This study provides a checklist of Ganaspis Förster, 1869 species recorded in Brazil, including data on their hosts and distribution within the country. Additionally, Ganaspis hookeri Crawford, 1913 is recorded for the first time in Brazil (Paraná State) and is redescribed. In Brazil, Ganaspis now has five recorded species.

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Comunidade de formigas associadas à cochonilha-rosada da cana-de-açúcar em sistemas convencional e orgânico de produção - (2025)

Maiara A. Cruz, Rodrigo M. Feitosa, Ana Lúcia B. G. Peronti, Nilza M. Martinelli

Volume: 7 - Issue: 0

Resumo.  In agroecosystems, the interaction between ants (Hymenoptera: Formicidae) and hemipterans can increase populations of these phytophagous insects, promoting injuries and damage caused by them to crops. The aim of this study was to list the species of ants associated with the mealybug Saccharicoccus sacchari (Cockerell, 1895) (Hemiptera: Pseudococcidae), classifying them according to their presence in the different parts of sugarcane plants. In addition, we verified whether the adopted cultivation system could alter the ant community associated with mealybugs. The experiment was carried out in 2018/19 agricultural harvest, in two sugarcane stands, variety CTC4, in conventional and organic system, both in the municipality of Jardinópolis, SP, Brazil. Ants were collected in the mealybug colonies fixed in different plant structures and sugarcane development stages, including preliminary inspections on the roots of clumps and during plant development, evaluating aerial structures: sprouts, tillers and stalks. Eighteen species of ants were recorded. From these, eight were recorded exclusively in the conventional system, two only in the organic system and eight ant species were common for both systems. It is noteworthy that, for each of the plant structures, clumps and stems, six species of ants occurred exclusively foraging in the mealybug colonies. For sprouting, mealybugs and ants were not observed. We conclude that the cultivation system adopted in the cane field seems to influence ant community associated with S. sacchari. These results can help us to advance in the knowledge about how associated ants can alter the infestation indices of the mealybug in sugarcane fields.

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Confirmation of Acutaspis albopicta (Cockerell, 1898) (Hemiptera: Diaspididae) in Brazil: occurrence on baru (Dipteryx alata Vogel, Fabaceae), a native Cerrado plant species - (2025)

Marcelo T. Castro, Sandro C. L. Montalvão, Vera R. S. Wolff

Volume: 7 - Issue: 0

Resumo. Recent research has been shown that Cerrado hosts a high richness of scale insects (Hemiptera: Coccomorpha) associated with native and exotic plants from different families and botanical species. This work aimed to report for the first time an association of an armored scale insect (Diaspididae), Acutaspis albopicta (Cockerell, 1898), with baru (Dipteryx alata Vogel, Fabaceae), a native tree from Cerrado biome, in Federal District, Brazil. Additionally, this is the first occurrence of this species of Diaspididae in Central Brazil. Acutaspis albopicta was first mentioned in Brazil in Rio de Janeiro, associated with Cocos nucifera (L.) (Arecaceae), but, until now, there was no evidence of its occurrence in the country. In this work, there is a confirmation of A. albopicta in Brazil, and macroscopic and microscopic descriptions and illustrations are presented.

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Damage caused by the mite Brevipalpus yothersi Baker, 1949 (Acari: Tenuipalpidae) on 'Cortibel' guava fruits (Psidium guajava) in northeastern São Paulo State - (2025)

Daniel J. de Andrade, Vinícius Dorigan

Volume: 7 - Issue: 0

Resumo. This study reports damages caused by Brevipalpus yothersi Baker, 1949 (Acari: Tenuipalpidae) mites in guava fruits in northeastern São Paulo State, Brazil. High population densities of B. yothersi were observed, primarily infesting green peduncles and young fruits of guava (cv. Cortibel RG). The mites caused dark spots on the fruit skin, rendering them unsuitable for in natura market sale.

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First record of Brachymeria pandora (Crawford, 1914) and Conura aff. flavicans Spinola, 1837 (Hymenoptera, Chalcididae) in cocoon of Rothschildia erycina (Shaw, 1796) (Lepidoptera, Saturniidae): multiparasitoidism or hyperparasitoidism? - (2025)

Gilcélia M. Lourido, Marcelo T. Tavares, Amanda Galvão, Marcio L. de Oliveira

Volume: 7 - Issue: 0

Resumo. We report the first record of the parasitoid Brachymeria pandora (Crawford, 1914) (Hymenoptera, Chalcididae) emerging from a cocoon of Rothschildia erycina (Shaw, 1796) (Lepidoptera, Saturniidae). This interaction was observed on Eriotheca candolleana (K. Schum.) A. Robyns (Malvaceae), which also constitutes the first record of this plant as a host for R. erycina. These findings are from Alter do Chão, Santarém, state of Pará, Brazil. Additionally, a female of Conura aff. flavicans Spinola, 1837 (Hymenoptera: Chalcididae) was observed exhibiting oviposition behavior on the same cocoon, from which the pupa responded with a trembling defensive reaction, but no individuals of this species were obtained. However, no individuals of C. aff. flavicans emerged, and its role as a primary parasitoid of the moth or a hyperparasitoid of B. pandora is discussed.

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First record of Megninia ginglymura (Mégnin, 1877) (Sarcoptiformes: Analgidae) in the state of Pernambuco, Brazil, associated with hen poultry systems - (2025)

Maria B. G. Duarte, Iasmyn V. C. Galvão, Lidia R. A. Silva, Juan S. D. Cáceres, Antônio A. Paz-Neto, Noeli J. Ferla, José W. S. Melo

Volume: 7 - Issue: 0

Resumo. Mites of the genus Megninia Berlese, 1883 (Sarcoptiformes: Analgidae) are known ectoparasites of birds in intensive production systems, however, their distribution in Brazil remains poorly documented. This study reports the first record of the feather mite Megninia ginglymura (Mégnin, 1877) (Sarcoptiformes: Analgidae) in the state of Pernambuco, Brazil. Samples were collected from two farms with different rearing systems: Vertical Automatic, Californian and Cage Free. Monthly surveys were conducted between January and November 2024, totalizing 11 collections. M. ginglymura appears to be prevalent among poultry farms in Brazil; however, limited efforts has been made to mitigate its impacts, primarily due to a lack of targeted research. Baseline studies such as this are essential for guiding future research aimed at characterizing populations in poultry systems and reducing the impacts caused by Megninia mites.

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First record of phoresy by Parachernes setiger Mahnert, 1979 (Pseudoscorpiones, Chernetidae) on the fly Artemita amenides (Walker, 1849) (Diptera, Stratiomyidae, Pachygastrinae) in the Central Amazon - (2025)

Cleiton R. Guimarães, Jasmine D. N. Sena, Everton Tizo-Pedroso, José R. Pujol-Luz, José A. Rafael

Volume: 7 - Issue: 0

Resumo. Pseudoscorpions can attach themselves to various mobile arthropods. This interaction is known as phoresy. We report for the first time the phoretic interaction between pseudoscorpion (Arachnida) and Stratiomyidae (Diptera) in the New World, as well as the first phoretic interaction involving Parachernes setiger Mahnert, 1979 (Pseudoscorpiones, Chernetidae), in this case with Artemita amenides (Walker, 1849). Three specimens were attached to the fly's mid tibia (1 specimen) and hind tibia (2 specimens on the same side).

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First record of Tetranychus musae Auger, Migeon & Flechtmann, 2008 (Prostigmata: Tetranychidae) on Musa sp. (Musaceae) from Pará State, Brazil - (2025)

Aloyséia C. S. Noronha, Noeli J. Ferla, Iury S. Castro, Magali B. de Oliveira, Izabela F. de Oliveira

Volume: 7 - Issue: 0

Resumo. This study reports the occurrence of the spider mite Tetranychus musae Auger, Migeon & Flechtmann, 2008 (Acari: Tetranychidae) on banana (Musa sp.: Musaceae) in Brazil. Specimens were collected from banana leaves grown in an intercropping system with cacao (Theobroma cacao L. - Malvaceae) at an experimental site in the municipality of Moju, Pará State. This represents the first confirmed record of T. musae in Brazil.

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First Record of the Flower Bud Fly Dasiops inedulis Steyskal, 1980 (Diptera: Lonchaeidae) in Northeastern Brazil - (2025)

Gabriel R. Barros, Laura J. Gisloti, Francisca L. da C. Silveira, Érica C. Calvet

Volume: 7 - Issue: 0

Resumo. Passion fruit cultivation in Northeastern Brazil stands out in terms of both production and productivity when compared to other regions of the country. However, the incidence of arthropod pests during crop management poses a significant challenge. Among the various pest species, the presence of dipterans commonly known as flower bud flies, belonging to the genera Dasiops Rondani (1856) and Neosilba McAlpine (1962) (Diptera: Lonchaeidae), is particularly noteworthy. Both genera have been reported on plants in the Passifloraceae, with species from the genus Dasiops being primarily associated with the abscission of reproductive structures, which represents the main limiting factor in achieving high yields. In this context, the aim of this study was to identify the main species of flower bud fly present in passion fruit plantations in producing regions of the state of Ceará. To this end, five collections of infested flower buds were carried out. In Brazil, the species Dasiops inedulis Steyskal, 1980 has already been recorded in six states; this study represents the first record of the species in the state of Ceará.

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First record of Trichotrombidium muscarum (Riley, 1878) (Trombidiformes: Microtrombidiidae) in South America, with morphometric data and host association - (2025)

Bianca P. Valério, Leopoldo F.O. Bernardi, Livia M. S. Ataide, Ricardo Bassini-Silva

Volume: 7 - Issue: 0

Resumo. The genus Trichotrombidium Kobulej, 1951 (Microtrombidiidae) includes ectoparasitic mites associated with dipteran species. However, their life cycle remains poorly understood, as only immature stages have been described. In this study, we report the first record of Trichotrombidium muscarum (Riley, 1878) in South America, specifically in Brazil, parasitizing the stable fly, Stomoxys calcitrans (L., 1758) (Diptera: Muscidae). The mites were collected using a pan- trap near a poultry farm in Nepomuceno, Minas Gerais State, Brazil. Morphometric data are provided, expanding the knowledge of this species.

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First report of Idalus agastus (Dyar, 1910) (Lepidoptera: Erebidae: Arctiinae) attacking native Myrtaceae seedlings in nurseries in Brazil - (2025)

Gabriel R. Abib, Jennifer L. da Silva, Dori E. Nava

Volume: 7 - Issue: 0

Resumo. This study reports, for the first time, attack of Idalus agastus (Dyar, 1910) (Lepidoptera: Erebidae: Arctiinae) on the seedlings of Myrtaceae family plants grown in nurseries in southern Brazil. This arctiid is common in the state of Rio Grande do Sul and is a secondary pest of eucalyptus. However, reports of damage to native fruit species in nurseries are unprecedented in this region. Infestation and foliage damage have been observed in Psidium cattleyanum Sabine (strawberry guava), Myrcianthes pungens (O. Berg.) D. Legrand (guabiyu), Myrciaria cauliflora Mart. (jabuticaba), and Eugenia uvalha Cambess. (uvaia) trees during the September/October 2023.

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First report of the invasive species and potential pest Zaprionus tuberculatus Malloch, 1932 (Diptera, Drosophilidae) in Pará, Brazil - (2025)

Mayara F. Mendes, Carlos J. E. Lamas

Volume: 7 - Issue: 0

Resumo. This paper reports the first occurrence of the potential pest Zaprionus tuberculatus Malloch, 1932 (Diptera, Drosophilidae) in the municipality of Belém, Pará, Brazil, specifically in the Amazon region at the vicinity of the Museu Paraense Emílio Goeldi. This report is crucial for collecting data on the geographic distribution and population growth of this invasive species, which will aid in the development of strategies for pest management programs. Furthermore, new points records for the invasive species in Brasília are presented for the first time, extending the spread of Z. tuberculatus across Brazil.

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Foraging Activity in Polybia striata (Fabricius, 1787) (Hymenoptera: Vespidae) - (2025)

Izabella Schaefer, Wilker Morais, Lucas R. Oliveira, Bruno C. Barbosa, Fábio Prezoto

Volume: 7 - Issue: 0

Resumo. Foraging ensures resource acquisition for feeding, nest construction, and colony maintenance in social wasps. This study examined the foraging activity and dripping behavior of Polybia striata (Fabricius, 1787) (Hymenoptera: Vespidae) in an urban environment, analyzing their correlation with temperature and humidity. Observations took place on the campus of the Federal University of Juiz de Fora, totaling 50 hours between January and February 2018. Every 30 minutes, departures and returns to the nest were recorded, along with climatic variables. Foraging activity peaked between 9:00 and 13:30, the hottest period of the day. The number of departures increased with temperature and decreased with humidity, suggesting that hottest conditions favor foraging while high humidity inhibits it. Always after rainfall, wasps engaged in dripping behavior, regurgitating small water droplets from the nest structure. This behavior occurred more frequently in the morning and was linked to nest maintenance. In addition to advancing knowledge of the species' ecology, this study may inform management strategies in urban areas.

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If you seek, you will find: second record of Melanoloma viatrix Hendel, 1911 (Diptera, Richardiidae) in pineapple in Brazil and its distribution in the country - (2025)

Aprigio L. Oliveira-Filho, Israel S. Pinto, Hilda B. Luz, Thiago H. R. Pádua, Francisco Limeira-de-Oliveira, Ricardo Adaime, Marcoandre Savaris, Roberto A. Zucchi

Volume: 7 - Issue: 0

Resumo. The pineapple fly, Melanoloma viatrix Hendel, 1911 (Diptera, Richardiidae), is a pest in pineapple plantations in several South American countries. In Brazil, pineapple damage by M. viatrix was first reported in a commercial plantation in the state of Amapá. We report this pest from a single pineapple sample collected in the municipality of Itaituba, state of Pará, from a plantation operated under the family farming system. As in other South American countries, pineapple is the sole known host of M. viatrix. Examination of specimens deposited in two Brazilian collections revealed that, in addition to the states of Amapá and Pará, M. viatrix also occurs in the states of Maranhão, Tocantins, and Mato Grosso. However, no host information is known for the specimens deposited in collections; therefore, M. viatrix is known to damage pineapple only in Amapá and Pará. Given the extensive geographical distribution of the pest, surveys of host plants and sampling in other Brazilian pineapple-producing states are needed to establish effective management strategies and prevent the spread of the pest within Brazil.

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New record of Schievitermes globicornis Roisin, 2022 (Blattodea, Isoptera, Termitidae) for the Brazilian Amazon forest - (2025)

Walterley W. Pereira-Filho, Rayssa Almeida-Azevedo, Jose W. Morais, Renato A. Azevedo

Volume: 7 - Issue: 0

Resumo. Schievitermes Roisin, 2022 is a monotypic termite genus previously described only from French Guiana. In this study, we report for the first time the occurrence of this species in the Brazilian Amazon, in the Ducke Reserve, Manaus, Amazonas, Brazil. Species identification was confirmed through detailed morphological analyses of soldiers and workers, following established protocols, and comparison with previously published descriptions and illustrations. This record significantly expands the known geographic distribution of the species and highlights the importance of Amazonian forests in conserving poorly known termite lineages.

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Novos registros georeferenciados de Tityus serrulatus Lutz & Mello, 1922 (Scorpiones, Buthidae) para o estado do Mato Grosso, centro-oeste do Brasil - (2025)

Jessé M. Ribeiro Junior, Pablo M. Pazóti, Marielle C. Schneider, Marcos A. Carvalho, Christine Strüssmann

Volume: 7 - Issue: 0

Resumo. We present additional records of Tityus serrulatus Lutz & Mello, 1922 (Scorpiones: Buthidae) for the state of Mato Grosso, midwestern Brazil. The record of this scorpion species, which can cause mild to severe envenomation, significantly contributes to the knowledge of scorpionism in the state, as well as to the mapping of its distribution in the Brazilian territory. A morphologically similar species is abundant in the area - Tityus confluens Borelli, 1899 (Scorpiones: Buthidae), also presenting a general uniform yellow coloration - but is usually responsible for less severe scorpion accidents. The correct identification of both species by health agents and the general population may be relevant for the appropriate treatment of local scorpion sting cases.

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Occurrence and symptom characterization of Oligonychus grypus Baker & Pritchard (Acari: Tetranychidae) in sugarcane - (2025)

Gabriel Ramos, Daniel Júnior de Andrade

Volume: 7 - Issue: 0

Resumo. The occurrence of phytophagous mites in Brazilian sugarcane crops has received limited attention but has increased over the past two decades. Among these mites, Oligonychus grypus Baker & Pritchard, 1960 (Acari: Tetranychidae), commonly known as the African sugarcane mite, is particularly noteworthy. Its populations have intensified, with high-density outbreaks associated with climate change and agricultural practices. In Brazil, this species was first identified in 2009 in the Piracicaba region of São Paulo. Under severe infestations, it causes extensive damage to leaf blades, producing yellowish to whitish spots that indicate its destructive potential. These injuries reduce crop yield and compromise the quality of raw material for industrial processing. This scientific note reports the occurrence of O. grypus in commercial sugarcane fields in the Ribeirão Preto region, São Paulo. It documents the symptoms and potential impacts on the crop, underscoring the importance of monitoring, given the economic significance of sugarcane production in Brazil.

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Occurrence of Aglae caerulea Lepeletier & Serville, 1825 (Apidae, Hymenoptera) in the Cerrado biome: new records from Minas Gerais state, Brazil - (2025)

Jean H. Ignácio-Souza, Thiago H. A. Tosta, Leo C. Rocha-Filho, Solange C. Augusto

Volume: 7 - Issue: 0

Resumo. Aglae caerulea Lepeletier & Serville, 1825 (Apidae, Hymenoptera) is a rare cleptoparasitic species primarily associated with the Amazon rainforest and gallery forest in the Cerrado Biome. Here, we report two new records of A. caerulea from surveys conducted in seasonal semideciduous forest remnants of Cerrado, extending its home range to Minas Gerais state, Brazil. During these surveys, five A. caerulea males were attracted to methyl cinnamate. These findings highlight the importance of forested habitat in the Cerrado for supporting rare euglossine species and contribute to a better understanding of the distributional range and habitat use of A. caerulea.

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Occurrence of the sugarcane aphid in sorghum crops in Pernambuco, Brazil - (2025)

Maria L. T. Matheus, Cláudia H. C. Matos, Carlos R. F. de Oliveira, Astrogilda B. do Nascimento, Thieres G. F. da Silva

Volume: 7 - Issue: 0

Resumo. The objective of this study was to record the occurrence of the Melanaphis sacchari Zehntner, 1897; Melanaphis sorghi Theobald, 1904 (Hemiptera: Aphididae) complex in sorghum cultivation areas in Serra Talhada, Pernambuco, Brazil. Sorghum samples were collected in the field to identify the specimens. In the laboratory, the specimens were identified, confirming the presence of M. sacchari/M. sorghi. This aphid is a pest that has been spreading in Brazil since 2019, causing significant damage to sorghum. This is the first record of M. sacchari/M. sorghi in Pernambuco, Brazil.

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Oiketicus kirbyi (Guilding, 1827) (Lepidoptera: Psychidae): first record feeding on Malus domestica Borkh. (Rosaceae) in Brazil - (2025)

Rodrigo A. Pinheiro, Samuel V. Santos, Luana G. Silva, Poliana P. Silvério, Gilson G. S. Oliveira-Júnior, Sebastião L. Assis-Júnior, Marcus A. Soares

Volume: 7 - Issue: 0

Resumo. Several phytophagous insects, such as sap-suckers, borers, and defoliators, affect apple (Malus domestica Borkh. (Rosaceae)) production in Brazil. Recording insects that cause damage to plants can facilitate their identification when making control decisions. Given the importance of apple production in Brazil, it was necessary to report the occurrence of Oiketicus kirbyi (Guilding, 1827) (Lepidoptera: Psychidae) feeding on M. domestica leaves in Brazil. The caterpillars identified as O. kirbyi were observed damaging leaves of the leaves of M. domestica. These were collected, determined, and deposited in an entomological reference collection, constituting the first record of the species feeding on M. domestica in Brazil.

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Record of Cinnamomum verum (Lauraceae) as a host for treehoppers (Hemiptera, Auchenorrhyncha: Aetalionidae and Membracidae) - (2025)

Glauco C. de S. Oliveira

Volume: 7 - Issue: 0

Resumo. Cinnamon plants are attacked by different phytophagous insects, but there are no records of infestations by treehoppers. Thus, this note reports Notogonioides erythropus (Burmeister, 1835), Talipes appendiculatus (Fonseca, 1936), and Bolbonota sp. (Hemiptera: Membracidae) using a cinnamon tree as a host in an urban area of southeastern Brazil. Additionally, the formation of an interspecific aggregation between the leafhopper Aethalion reticulatum (Linnaeus, 1767) (Hemiptera: Aetalionidae) and N. erythropus is recorded.

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Reducing Bycatch in Aquatic Insect Sampling: Evaluating a Size-Dependent Exclusion Device for UV Light Pan Traps - (2025)

Alexander B. Orfinger, Hunter J. Smith

Volume: 7 - Issue: 0

Resumo. A growing body of research indicates that insect populations are declining worldwide, underscoring ongoing anthropogenic threats to biodiversity. Considering these conservation concerns, novel strategies to protect insects and other species vulnerable as bycatch to insect collecting techniques should be considered. These methods should ideally minimize bycatch while not impacting the recovery of target taxa. In the field of aquatic entomology, the UV light pan trap is widely used. While effective, this method incurs significant bycatch of unwanted arthropods and occasionally vertebrates, which both compromises the sample and has conservation implications. The goal herein was to develop and test a size-based bycatch exclusion device deployed with UV light pan traps for reducing non-target catches. This simple, cost-effective design does not require any modifications of the existing trap itself beyond adding a domed cage. "Caged" and "uncaged" traps were simultaneously deployed at two streams in northwest Georgia, USA, for a total of twelve trapping events over three months. Caddisflies (Trichoptera) served as the target taxa, namely net-spinning caddisflies (Hydropsychidae) and microcaddisflies (Hydroptilidae), and total numbers of these were counted and compared between caged and uncaged traps. No significant differences were detected between treatments. Therefore, the data suggest that these exclusion devices do not negatively impact adult caddisfly sampling and should exclude undesired large insects, such as dobsonflies, certain saturniid moths, and many vertebrates. Although these results are positive, they are preliminary, and additional questions must be addressed which are discussed in this study.

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