Resumen Las especies mexicanas de Belonuchus Nordmann se colectan con cierta frecuencia en sustratos con materia orgánica en descomposición o usando trampas con este tipo de cebos y se les considera depredadoras de otros insectos, como larvas de moscas. Se tienen contribuciones recientes sobre su taxonomía; sin embargo, aún hacen falta más estudios al respecto. En este trabajo se describen 2 especies nuevas de Belonuchus procedentes de varios estados de México, las cuales fueron localizadas en el material entomológico de la Colección Nacional de Insectos de la UNAM. Las descripciones se acompañan con imágenes que ayudan al reconocimiento de las especies y se presenta una clave modificada que facilita su identificación. Además, se analizaron ejemplares de algunas especies ya conocidas que representan varios primeros registros estatales. Todo lo anterior ha derivado en el incremento de la riqueza nacional de especies de Belonuchus y en un conocimiento más completo sobre su taxonomía y distribución geográfica.

Abstract The Mexican species of Belonuchus Nordmann are collected with some frequency in substrates with decomposing organic matter or using traps with this type of bait and are considered predators of other insects, such as fly larvae. There are recent contributions on their taxonomy; however, more studies are still needed in this regard. This paper describes 2 new species of Belonuchus from several states in Mexico, which were located in the entomological material of the National Insect Collection, UNAM. Descriptions are accompanied by images that help to recognize the species and a modified key is presented to facilitate their identification. In addition, several specimens of some already known species, which represent first state records, were analyzed. All of the above has resulted in an increase in the national richness of Belonuchus species and a more complete knowledge of its taxonomy and geographic distribution.

Abstract In this work the taxonomic composition, richness and abundance of beetles sampled by pitfall traps between 2006 and 2008 in the Pascua and Bravo river basins are given. The sampling were seasonal in three vegetation formations (peat bog, forest and secondary forest). A total of 833 individuals belonging to 15 families, 41 genera and 49 species were collected. The most diverse families were Carabidae, Staphylinidae and Curculionidae; Ceroglossus suturalis, Ceroglossus buqueti, Ceroglossus chilensis, Creobius eydouxii and Cascellius gravesii were the most abundant species. Forest, and peat bog presented the greatest specific richness and abundance of beetles, probably due because they are the dominant vegetation formations in both basins. Similar results obtained in summer could be explained by better weather conditions that would favor the phenological changes that regulate the life cycles of the insects that inhabit there. Finally, the presence of monotypic or little diversified genera is typical of the Magellanic Paramo biogeographic province, with species adapted to living in humid and cold environments.

Resumen En este trabajo se entrega la composición taxonómica, riqueza y abundancia de coleópteros muestreados mediante trampas de intercepción entre 2006 y 2008 en las cuencas de los ríos Pascua y Bravo, Región de Aysén, Chile. Los muestreos fueron estacionales en tres formaciones vegetacionales (turbera, bosque y renoval). Se capturó un total de 833 individuos pertenecientes a 15 familias, 41 géneros y 49 especies. Las familias más diversas fueron Carabidae, Staphylinidae y Curculionidae, y las especies más abundantes fueron Ceroglossus suturalis, Ceroglossus buqueti, Ceroglossus chilensis, Creobius eydouxii y Cascellius gravesii. Bosque y turbera presentaron los mayores valores en riqueza y abundancia de coléopteros, debido probablemente a que son las formaciones vegetacionales dominantes en ambas cuencas. Resultados similares obtenidos en verano podrían explicarse por condiciones climáticas más benignas que favorecerían los cambios fenológicos que regulan los ciclos de vida de los insectos que allí habitan. Finalmente, la presencia de géneros monotípicos o poco diversificados es propia de la provincia biogeogràfica del Páramo Magallánico, con especies adaptadas a vivir en ambientes húmedos y fríos.

Abstract Fungi are part of the diet of larvae and adults of the order Coleoptera; however, it is a resource that is infrequently used as an attractant for the collection of these insects. In this work, mycetophilous beetle assemblages were analyzed in four localities located along an altitudinal gradient in the central region of Chiapas, Mexico. Pitfall traps baited with the fruiting body of the fungus Agaricus bisporus previously fermented were used for beetle sampling. A total of 208 individuals comprising 27 species of the families Scarabaeidae (Scarabaeinae), Silphidae, and Staphylinidae were captured. Species diversity was low compared to other attractants used for sampling these insect groups, however, a high representativeness of species was obtained. In general, diversity is related to increasing altitude, but the response was different among families. Scarabaeinae was better represented in the lower altitude sites, the opposite case occurred with Staphylinidae that predominated in the higher altitude sites, this allowed differentiation of three beetle communities along the gradient (Dβ = 2.77). Despite the low prevalence of species and their abundances, these results indicate that these types of attractants can be used by diverse species and are likely to function as an alternate source to segregate demand competition and food partition when preferred resources are scarce. Offering a diverse number of potential food resources would allow to establish the trophic spectrum of species in a more realistic and objective way. Therefore, this type of attractant can be used to capture beetles in biodiversity inventories allowing to obtain more accurate results on local insect diversity.

Resumen Los hongos son parte de la dieta de larvas y adultos del orden Coleoptera; sin embargo, es un recurso que con poca frecuencia se utiliza como atrayente para la recolección de estos insectos. En este trabajo se analizaron los ensamblajes de escarabajos micetófilos en cuatro localidades ubicadas a lo largo de un gradiente altitudinal de la región central de Chiapas, México. Para el muestreo de escarabajos se utilizaron trampas de caída cebadas con el cuerpo fructífero del hongo Agaricus bisporus previamente fermentado. En total se capturaron 208 individuos que integran 27 especies de las familias Scarabaeidae (Scarabaeinae), Silphidae y Staphylinidae. La diversidad de especies fue baja en comparación con otros atrayentes utilizados para el muestreo de estos grupos de insectos, no obstante, se obtuvo una alta representatividad de especies. De manera general, la diversidad está relacionada con el incremento de la altitud, pero la respuesta fue diferente entre familias. Scarabaeinae estuvo mejor representada en los sitios de menor altitud, caso contrario ocurrió con Staphylinidae que predominó en los sitios de mayor altitud, esto permitió diferenciar tres comunidades de escarabajos a lo largo del gradiente (Dβ = 2.77). A pesar de la baja prevalencia de especies y sus abundancias, estos resultados indican que este tipo de atrayentes pueden ser utilizados por diversas especies y es probable que funcionen como una fuente alterna que permite segregar la competencia por la demanda y la repartición de alimento cuando los recursos preferidos son escasos. Ofrecer un número diverso de recursos alimentarios potenciales, permitiría establecer el espectro trófico de las especies de forma más realista y objetiva. Por lo tanto, este tipo de atrayentes pueden ser utilizados para la captura de escarabajos en los inventarios de biodiversidad permitiendo obtener resultados más precisos sobre la diversidad local de insectos.

Abstract This study aimed to evaluate the abundance and diversity of Coleoptera in five land use systems (LUS) and the soil properties that explain the distribution of these organisms. Uses involved native forest (NF), Eucalyptus plantation (EP), perennial pasture (PA), integrated crop-livestock (ICL) and no-tillage (NT) in western Santa Catarina, Brazil. Coleopterans were sampled by the methods of pitfall traps and soil monoliths during the winter and summer. Regardless of the LUS, 1,441 individuals were captured, with Staphylinidae being the most representative family (~47%). The use of NF showed higher abundances of coleopterans. The land use systems PA, NT, and ICL obtained high values of diversity of Coleoptera families, depending on the method and season of collection. The distribution of families was influenced by the sampling season, and some soil properties such as biopores, water content and phosphorus can explain the variation of abundance among the LUS.

Abstract Epigeic coleopteran species are linked by complex trophic webs and implicated in several ecosystem services for agriculture. Although there are reports of ground-dwelling Coleopterans inhabiting main extensive agroecosystems, their assemblages in horticultural crops in Argentina have been little explored. We examined the community structure of epigeal Coleoptera assemblages of Curculionidae, Carabidae, Staphylinidae and Coccinellidae species, in lettuce and tomato crops located in Northern Buenos Aires province, over a 3-year sampling period (2010 to 2013) by using pit-fall traps. Crop species and cycles, and phytosanitary measures (conventional and organic farming), were main factors considered as influencing the insect species composition, abundance and seasonal occurrence in the assemblages. Seventy coleopteran species were identified. The curculionids Ceutorhynchini sp. and Phyrdenus muriceus (Germar), the carabid Scarithes anthracinus Dejean, the coccinelid Eriopis connexa (Germar) and the staphylinids Aleochara sp. and Aleochara obscurus Bernhauer are the most common species in lettuce and tomato crops in the region studied. Especially the carabids, staphylinids and E. connexa are known act as natural enemies of several pests in the agroecosystems studied. Coleopteran assemblages found in lettuce differed from those associated to tomato crops, being the cropping season the main factor that influenced the community structure.

ABSTRACT The aim of this study was to characterize the leaf-litter entomofauna in degraded areas under restoration process with different restoration techniques, using the native forest as a reference and ecological indexes as parameters to select bioindicator groups. The study was conducted at “Serra do Itajaí” National Park (PNSI). The survey was conducted from winter/2014 to autumn/2016. The characterization of sampled communities was performed using identification, order, families and faunal indexes such as frequency, constancy and dominance. Overall, 11,241 insects from 57 taxonomic groups were collected in pitfall traps. The native forest showed the greatest richness observed. Groups classified as frequent, constant and dominant in all environments were the Formicidae family and Diptera Order. Significant differences were observed in the frequencies of Ptiliidae, Staphylinidae and Cicadellidae families and also Diptera Order. Coleoptera Ptiliidae, Staphylinidae families and Scolytinae subfamily showed potential as bioindicators of environmental quality at PNSI.

Abstract Viviparity is characterized by the retention of fertilized eggs in reproductive tract of the female. This condition is very common in vertebrates, but relatively rare in invertebrates, including insects. The present work presents a review on viviparity in Staphylinidae, with special attention on genus Corotoca Schiødte, 1853. The genus is composed by six termitophilous species with neotropical distribution, and together with Spirachtha Schiødte, 1853 are the only to genera with species confirmed as viviparous in the family. Also, information and discussion are presented on the life cycle of Corotoca species based on dissection of females in laboratory and field observations. During the dissection of females of four species of Corotoca we observed that each female carries three eggs at the same time. The embryos present asynchronous development: when one is located at apex of abdomen, the other two are at IV segment, on abdomen curvature. These observations are complementary with those obtained in field observation, when the female deposits a larva outside the nest, on the foraging trail of termite Constrictotermes cyphergaster (Silvestri, 1901). The strategy of Corotoca species focused on the immature as dispersing agent is derived and probably favor the fitness in relation to a hypothetical condition in which the adult is the dispersive agent.

ABSTRACT Despite the economic importance of lettuce, no studies have examined the diversity of species associated with this crop that could contribute to the development of an ecological management of phytophagous arthropods and mollusks. This study was aimed at determining the predominant species of arthropods and mollusks in two lettuce cultivars (curly-leaf Veronica and smooth-leaf Elisa). A total of 9,638 specimens of arthropods and mollusks was collected and identified to 27 constant species, 17 classified as accessory and two as accidental species. Seven species of aphids were identified, with Nasonovia ribisnigri, Uroleucon sonchi, and Uroleucon ambrosiae as the most frequent, as well as three species of thrips, predominantly Caliothripsphaseoli and Frankliniella schultzei. Other phytophagous arthropods and mollusks occurred at frequencies below 10%. Among natural enemies, predators of the families Syrphidae (2.74%), Coccinellidae (1.66%), Staphylinidae (0.79%) and Carabidae (0.17%) and parasitoids of the order Hymenoptera (0.93%) were observed. Of the total specimens collected, 53.87% are considered phytophagous species, mostly aphids (40.82%), followed by thrips (11.35%). The aphid N. ribisnigri was the main pest species, as it forms colonies in the lettuce head and can spread plant viruses. Phytophagous pests preferred smooth over curly leaves.

RESUMEN A pesar de la importancia económica de la lechuga, no hay estudios que hayan analizado la diversidad de especies asociadas a este cultivo que podrían contribuir al manejo ecológico de los artrópodos fitófagos y moluscos. Este estudio tuvo como finalidad determinar las especies predominantes de artrópodos y moluscos en dos cultivares de lechuga (Veronica de hoja rizada y Elisa de hoja lisa). De un total de 9.638 ejemplares de artrópodos y moluscos se identificaron 27 especies comunes, 17 fueron clasificados como especies accesorias y dos especies, como accidentales. Se identificaron siete especies de áfidos, siendo Nasonovia ribisnigri, Uroleucon sonchi, Uroleucon ambrosiae, las más frecuentes. En trips se identificaron tres especies, siendo las más frecuentes Caliothrips phaseoli y Frankliniella schultzei. Otros artrópodos fitófagos y moluscos fueron identificados en frecuencias por debajo del 10%. Entre los enemigos naturales, se identificaron depredadores de las familias Syrphidae (2,74%), Coccinellidae (1,66%), Staphylinidae (0,79%) y Carabidae (0,17%) y parasitoides del orden Hymenoptera (0,93%). De las muestras totales recolectadas, 53.87% se consideran especies de fitófagos, principalmente áfidos (40.82%), seguido por trips (11,35%). El áfido N. ribisnigri fue la principal especie plaga ya que forma colonias en la cabeza de lechuga y puede propagar virus en las plantas. Los fitófagos prefieren las lechugas de hojas lisas por sobre las rizadas.

Abstract: The list of beetle species deposited at the Arhtropods Collection of the Facultad de Estudios Superiores Iztacala (CAFESI), UNAM, includes 10,277 specimens, grouped in five superfamilies, 15 families, 41 subfamilies, 172 genera and 570 species, of wich 231 are identified at species level and 339 at genus level and separated at morphspecies. The families Staphylinidae and Scarabaeidae represent 87.7% of the richness and 73% of the total specimens. The collection housed two holotypes of Paederinae, and paratypes of three species of Paederinae and two species of Staphylininae (Staphylinidae). It has a regional geographic coverage, 96% of the species and specimens recorded come from nine states of south central region of México, mainly from Estado de México with 54.7% of the species and 41.6% of the specimens, followed by Morelos, Guerrero and Michoacán. The collection also includes 61 specimens of 11 species of Paederinae coming from Argentina, Bolivia and Brazil. Forty five percent of the species and 26% of the specimens come from the tropical deciduous forest, while 30.8% of the species and 17.6% of the specimens come from the temperate forest.

Resumen: La lista de especies de coleópteros depositados en la Colección de Artrópodos de la Facultad de Estudios Superiores Iztacala (CAFESI), UNAM, incluye 10,277 especímenes, agrupados en cinco superfamilias, 15 familias, 41 subfamilias, 172 géneros y 570 especies, de las cuales 231 están identificadas nivel especie y de éstas, 339 a género y separadas a morfoespecie. Las familias Staphylinidae y Scarabaeidae representan el 87.7% de la riqueza y el 73% del total de especímenes. La colección alberga dos holotipos de Paederinae, y paratipos de tres especies de Paederinae y dos especies de Staphylininae (Staphylinidae). Tiene una cobertura geográfica regional, 96% de las especies y especímenes registrados provienen de nueve estados de la región centro-sur de México, principalmente del Estado de México con 54.7% de las especies y 41.6% de los especímenes, le siguen Morelos, Guerrero y Michoacán. Se incluyen especímenes de 11 especies de Paederinae provenientes de Argentina, Bolivia y Brasil. Del bosque tropical caducifolio provienen el 45% de las especies y el 26% de los ejemplares, mientras que el 30.8% de las especies y el 17.6% de los especímenes provienen de los bosques templados.

ABSTRACT Paederus fuscipes, a vector of Paederus dermatitis in most tropical and subtropical countries of the world have a high prevalence in human dwellings due to their positively phototaxic behaviour which has caused a tremendous impact on human health. In this paper, P. fuscipes dispersal flights were studied for two seasons of the rice cultivation phases in residential premises built close to rice field areas (≈32-60 m and 164 m) in mainland Penang, Malaysia. We examined the effects of different light illuminance, building floor level and their association with rice stages as a focal cause of P. fuscipes dispersion from the rice fields towards human dwellings. The present study showed a significant interaction between different light illuminances and rice cultivation phases in attracting P. fuscipes to disperse and invade human dwellings. The highest number of P. fuscipes was captured near the bright light. P. fuscipes flights increased in line with each floor level, and the highest captures took place at higher building floor levels (levels 2 and 3) compared to lower building floor levels (ground floor and level 1) of a three storey apartment in both rice seasons. This finding not only conveys a better understanding on P. fuscipes dispersal pattern, but also draws public attention on the occurrence of dermatitis linearis caused by the Paederus beetles.

Bernardo O'Higgins National Park (BONP) is the largest protected area in Chile and southern hemisphere. With over 3.5 million hectares, it has a complex continental and archipelagic topography with a mosaic of evergreen forests, coastal scrub and peatlands. Given the future of the Chilean environmental legislation, all protected areas will be re-evaluated according to scientific parameters. Therefore, and considering that insects are currently recognized by the Chilean law, we aim at providing information on the spatial distribution of beetles using pitfall traps in 20 sites associated with the park. We evaluate the effect of vegetation and type of environment (insular, continental) on taxonomic composition, richness, abundance and diversity of beetles. A total of 15 families, 33 genera and 38 species were recorded. Many of these represent monotypic groups. The most diverse families were Carabidae, Staphylinidae and Curculionidae. No significant effect of vegetation and type of environment on any community measurement was observed since the vegetation and sectors analyzed are part of a larger biogeographic unit. Additionally, we determined 11 species to the park, which are significantly associated among them. We discuss the importance of this kind of information to make biogeographical approaches.

El Parque Nacional Bernardo O'Higgins (PNBO), corresponde al área silvestre protegida más extensa de Chile y del Hemisferio Sur; con más de 3,5 millones de hectáreas presenta una compleja topografía continental e insular con un mosaico de bosques perennifolios, matorral costero y turberas. Considerando que los insectos son actualmente reconocidos por la legislación chilena, el objetivo fue entregar información de la distribución espacial de coleópteros capturados con trampas de intercepción en 20 sitios asociados al parque y evaluar el efecto que tiene la vegetación y tipo de ambiente (insular, continental) sobre la composición taxonómica, riqueza, abundancia y diversidad de los mismos. Se registró un total de 15 familias, 33 géneros y 38 especies, muchas de las cuales pertenecen a géneros monotípicos. Las familias más diversas fueron Carabidae, Curculionidae y Staphylinidae. No se evidenció efecto significativo del tipo de ambiente ni de la vegetación sobre ningún parámetro comunitario analizado; lo anterior respondería a que las formaciones vegetales y sitios investigados forman parte de una unidad biogeográfica mayor. Por otra parte, se determinó que 11 taxones se encuentran asociados significativamente. Se discute, la importancia de este tipo de información al momento de realizar aproximaciones biogeográficas.

O Brasil é o país que possui o maior número de espécies de coleópteros bioluminescentes no mundo. Entretanto, estimativas sugerem que este número possa ser bem maior, dado que muitas espécies ainda não foram descritas. Neste trabalho foi realizado um levantamento das espécies de coleópteros bioluminescentes em três localidades na Serra da Paranapiacaba - a maior área remanescente contígua de Mata Atlântica no país, com associação ao respectivo habitat. No Parque Estadual Intervales, Parque Estadual Carlos Botelho e Tapiraí foram coletadas as seguintes espécies: (Lampyidae) Aspisoma lineatum, Aspisoma physonotum, Aspisoma fenestrata, Cratomorphus besckey, Cratomorphus distinctus, Photinus penai, Photinus sp1, Photinus sp9, Ethra aff. malledicta ou axilaris, Ethra aff. adicta, Lucidotini incertae sedis, Cladodes flabellicornis, Cladodes demoulini, Amydetes sp1, Bicellonycha sp8, Bicellonycha ornaticollis, Pyrogaster lunifer, Pyrogaster moestus, Pyrogaster sp2, Pyrogaster sp5, Pyrogaster sp6, Photuris lugubris, Photuris sp1, Photuris sp7; (Phengodidae) Stenophrixotrix sp1, Brasilocerus sp2, Pseudophengodes sp1; (Elateridae) Hapsodrilus pyrotis, Hypsiophtalmus sp1, Ptesimopsia luculenta, Pyroptesis cincticollis, Pyrearinus brevicolis, Pyrearinus candelarius, Pyrearinus micatus, Pyrophorus divergens. Estes dados mostram que esta constitui a segunda área mais rica em espécies luminescentes do Estado de São Paulo, depois da Est. Biológica de Boracéia, especialmente em elaterídeos, com espécies únicas características destas localidades e espécies comuns è outras áreas investigadas, como as da Estação Biológica de Boracéia (Salesópolis, SP) e áreas urbanizadas no triângulo Campinas - Sorocaba - São Paulo, originalmente cobertas por Mata Atlântica.

Brazil is the country with the largest number of bioluminescent beetle species in the world. However, estimates suggest that this number could much be higher, since many species remain to be discovered. In this work we made a survey of the species of bioluminescent beetles in Serra de Paranapiacaba - the largest remnant of Atlantic Forest in São Paulo State. The survey was done at Intervales State Park, Carlos Botelho State Park and municipality of Tapiraí and the following species were collected: Aspisoma lineatum, Aspisoma physonotum, Aspisoma fenestrata, Cratomorphus besckey, Cratomorphus distinctus, Photinus penai, Photinus sp1, Photinus sp9, Ethra aff. malledicta or axilaris, Ethra aff. adicta , Lucidotini incertae sedis, Cladodes flabellicornis, Cladodes demoulini, Amydetes lucernuta, Bicellonycha sp8, Bicellonycha ornaticollis, Pyrogaster lunifer, Pyrogaster moestus, Pyrogaster sp2, Pyrogaster sp5, Pyrogaster sp6, Photuris lugubris, Photuris sp1, Photuris sp7, Stenophrixotrix sp1, Brasilocerus sp1, Pseudophengodes sp1, Hapsodrilus pyrotis, Hypsiophtalmus sp1, Ptesimopsia luculenta, Pyroptesis cincticollis, Pyrearinus brevicolis, Pyrearinus candelarius, Pyrearinus micatus, Pyrophorus divergens. Our data show that Serra de Paranapiacaba is the second richest area in São Paulo state, especially in elaterids, with unique species typical of this area and species common to other investigated sites such as the Biological Station of Boracéia (in Salesópolis county) and the urbanized areas in the between Campinas - Sorocaba- São Paulo, originally covered to the Atlantic Rainforest.

Besouros da família Staphylinidae são comuns em zonas costeiras inundáveis pelas marés, como praias arenosas, manguezais, estuários e marismas. O objetivo desse trabalho foi estudar a distribuição espacial e a variação temporal da abundância ao longo de um ano, das espécies ocorrentes em duas praias arenosas (Assenodi e Cem) no Pontal do Paraná, Paraná, Brasil. Coletas semanais com um cilindro de PVC com 15 cm de diâmetro (0,017 m²) enterrado a 5 cm de profundidade, foram realizadas de janeiro a dezembro de 2012. A praia Assenodi apresentou altos valores de umidade de sedimento no supralitoral e pós-praia. Nesta praia, Bledius bonariensis foi dominante, mas também houve registro de B. fernandezi, ambas distribuídas nas porções superiores do perfil praial e ocorreram ao longo de todo o ano. A praia Cem apresentou valores altos de umidade do sedimento apenas no mesolitoral, em decorrência da subida e descida da maré, neste estrato B. hermani, foi a espécie dominante. Bledius bonariensis teve ocorrência ocasional em alguns meses do outono e inverno, associada a um aumento nas precipitações. A variação na abundância de B. hermani foi grande, sendo os maiores valores associados às altas temperaturas do verão. As espécies de Bledius mostraram uma clara separação espacial relacionada a distintos requerimentos ambientais, o que possibilita a coocorrência das três espécies na mesma praia em função de variações ambientais ao longo do ano.

Staphylinidae beetles are common in coastal areas flooded by tides, such as sandy beaches, mangroves, salt marshes, estuaries. The aim of this work was to investigate the spatial distribution and temporal variation in abundance throughout the year of the species sampled along two sandy beaches (Assenodi and Cem) in Pontal do Paraná, Brazil. Weekly samples with a 15 cm diameter PVC corer (0.017 m²) buried 5 cm in sediment depth were done from January to December 2012. Assenodi beach showed sediments with high humidity values at supralittoral and backshore. In this beach, Bledius bonariensis was the dominant species, and together with B. fernandezi occurred in the upper beach portion during the whole year. Cem beach showed sediment with high humidity values only at midlittoral and related to the rise and fall of the tide. Here, B. hermani was the dominant species, with B. bonariensis occurring sporadically in some autumn and winter months and related to an increase in precipitation. B. hermani presented a great variation in abundances, with highest values associated with high summer temperatures. Bledius species showed a clear spatial separation related to different environmental requirements that enable their co-occurrence within the same beach, due to environmental variations during the year.

A riqueza, abundância e sazonalidade da coleopterofauna associada a carcaças de suínos expostas em uma área de Caatinga foram examinadas. Para captura desses insetos foram utilizadas armadilhas do tipo bandeja, pitfall e Shannon modificada, durante duas estações (seca e chuvosa). 4.851 coleópteros foram coletados, pertencentes a 19 famílias e 88 espécies. Staphylinidae (2.184) e Histeridae (1.264) foram as famílias mais abundantes e somaram 71,1% dos espécimes coletados. Scarabaeidae (15) apresentou a maior riqueza. As espécies mais abundantes foram Atheta iheringi Bernhauer, 1908 (Staphylinidae) (1,685), Euspilotus sp. (Histeridae) (461), Stelidota geminata (Say, 1825) (Nitidulidae) (394), Xerosaprinus diptychus(Marseul, 1855) (Histeridae) (331) e Dermestes maculatus De Geer, 1774 (Dermestidae). Entre essas espécies, X. diptychus mostrou-se fortemente influenciada pela sazonalidade, uma vez que 96,1% dos espécimes foram coletados durante a estação seca.

The species richness, abundance and seasonality of Coleoptera fauna associated with pig carcasses exposed in a Caatinga area were examined. Tray, pitfall and modified Shannon traps were settled together to collect these insects during two seasons (dry and rainy). 4,851 beetles were collected, belonging to 19 families and 88 species. Staphylinidae (2,184) and Histeridae (1,264) were the most abundant families and accounted for 71.1% of the specimens collected. Scarabaeidae (15) showed the highest species richness. The most abundant species were Atheta iheringi Bernhauer, 1908 (Staphylinidae) (1,685), Euspilotus sp. (Histeridae) (461), Stelidota geminata (Say, 1825) (Nitidulidae) (394), Xerosaprinus diptychus(Marseul, 1855) (Histeridae) (331) and Dermestes maculatus De Geer, 1774 (Dermestidae). Amongst these species, X. diptychus showed to be strongly influenced by seasonality, since 96.1% of the specimens were collected during the dry season.

O objetivo deste trabalho foi avaliar o potencial predatório de besouros adultos de Carabidae e Staphylinidae (Coleoptera) sobre lagartas de quarto instar da lagarta-da-soja, em laboratório. Inicialmente, avaliou-se a capacidade de consumir uma lagarta por 24 horas. Para as espécies que causaram ≥80% de mortalidade da presa, determinou-se a taxa de consumo, tendo-se oferecido uma lagarta por 24 horas, durante quatro dias consecutivos. Os carabídeos Calosoma granulatum, Cynthidia croceipes, Odontocheila nodicornis e Pseudabarys sp. 1; as espécies dos gêneros Galerita, Scarites e Tetracha; e os estafilinídeos Eulissus chalybaeus, Glenus cyanicollis e Xenopygus sp. 2 apresentam elevado potencial predatório.

The objective of this work was to evaluate the predatory potential of adult Carabidae and Staphylinidae (Coleoptera) beetles on fourth-instar larvae of the velvetbean caterpillar, in the laboratory. Initially, the capacity to consume one caterpillar during 24 hours was evaluated. For species that caused ≥80% mortality of the prey, the consumption rate was determined, by offering one caterpillar during 24 hours for four consecutive days. The carabids Calosoma granulatum, Cynthidia croceipes, Odontocheila nodicornis, and Pseudabarys sp. 1; the species of the Galerita, Scarites, and Tetracha genera; and the staphylinids Eulissus chalybaeus, Glenus cyanicollis, and Xenopygus sp. 2 show great predatory potential.