ABSTRACT Great advances were made in recent years regarding the description of immatures of Cassidinae and their taxonomy as a whole, but many taxa remain undescribed. This study focuses on updating morphological data for Hybosa acutangula Spaeth, 1913 (Chrysomelidae: Cassidinae: Ischyrosonychini), a tortoise beetle native of South America, which was collected in Fridericia florida (DC.) L. G. Lohmann in the Brazilian Cerrado. We provide descriptions and illustrations of the morphology of the larva, pupa, and genitalia of adults, all of which are novel for this genus. The main discerning features for this species among other Ischyrosonychini are the lack of dark patterns in the dorsum of either the larvae, being limited to the dark scoli and the cranium, or the pupae, and a much reduced anal fork. We also present the first record of parasitism by Chalcididae wasps, Brachymeria sp. Westwood, 1832 and Conura sp. Spinola, 1837. Morphological comparisons remain limited demanding further studies with other species of Ischyrosonychini, as to better understand the placement of this species within the taxonomy of tortoise beetles. whole undescribed Spaeth 191 Chrysomelidae (Chrysomelidae , Ischyrosonychini) America DC. DC (DC. L G Cerrado larva pupa adults genus larvae cranium pupae fork wasps sp Westwood 183 Spinola 1837 beetles 19 (DC 18 1

Resumo Horismenus camobiensis sp. nov. (Hymenoptera: Eulophidae) é descrita com base em dados morfológicos, moleculares e ecológicos; esta nova espécie Chalcididae atua como hiperparasitoide de Opsiphanis invirae (Hübner, 1818) (Lepidoptera: Nymphalidae) em pupas de seu parasitoide Cotesia invirae Salgado-Neto and Whitfield, 2019 (Hymenoptera: Braconidae). Caracteres diagnósticos morfológicos e moleculares e ilustrações de H. camobiensis são fornecidos.

Abstract Horismenus camobiensis sp. nov. (Hymenoptera: Eulophidae), is described based on morphological, molecular and ecological data; this new species of chalcid wasp acts as hyperparasitoid of Opsiphanis invirae (Hübner, 1818) (Lepidoptera: Nymphalidae) in its parasitoid Cotesia invirae Salgado-Neto and Whitfield, 2019 (Hymenoptera: Braconidae). Diagnoses with morphological and molecular characters and illustrations are provided.

Abstract In this work, we report for the first time the occurrence of the parasitoid wasp Brachymeria amenocles (Walker, 1846) (Hymenoptera: Chalcididae) associated with the larvae of the flesh fly, Peckia (Peckia) chrysostoma (Wiedemann, 1830) (Diptera: Sarcophagidae), in Brazil. This parasitoid species was collected together with the species Brachymeria podagrica (Fabricius, 1787), in the municipality of Rio de Janeiro, geographically located in the Southeast region of Brazil, in larvae of the same host species reared in the same attraction substrate, behaving as solitary parasitoids. A trap containing putrefying sardine was exposed for 48 h, in the upper part of a house, located in Vila Isabel, an urban area. The larvae collected were reared in the laboratory without control of environmental conditions. A total of three adult parasitoid wasps of the species B. podagrica, and nine adult parasitoid wasps of the species B. amenocles emerged from 12 host pupae, resulting in a prevalence of parasitoidism of 4.8% and 14.5%, respectively. Developing parasitoids at the pupal phase were observed in another 34 host pupae dissected. work Walker, Walker (Walker 1846 Hymenoptera (Hymenoptera Chalcididae fly (Peckia Wiedemann, Wiedemann (Wiedemann 1830 Diptera (Diptera Sarcophagidae, Sarcophagidae , Sarcophagidae) Brazil Fabricius, Fabricius (Fabricius 1787, 1787 1787) Janeiro substrate 4 h house Isabel area conditions B 1 8 4.8 145 14 5 14.5% respectively 3 dissected 184 183 178 4. 14.5 18 17 14.

RESUMO Os Chalcididae são parasitoides com distribuição ampla e grande riqueza com quase 1.500 espécies descritas. Apresentam potencial de diversidade maior, principalmente em função dos poucos estudos e da complexidade taxonômica associada. Estudos em regiões semiáridas são escassos e necessários para contribuir com conhecimento biogeográfico da fauna Neotropical, portanto o objetivo desse trabalho foi registrar as espécies de Chalcididae que ocorrem no município de Barra do Choça, Bahia, inserido no no semiárido da Bahia. Foram utilizadas cinco armadilhas do tipo Malaise distribuídas em duas áreas de vegetação nativa e uma constituída demonocultura, com monitoramento mensal por dois anos consecutivos. Os insetos foram triados e os espécimes da família Chalcididae identificados em nível de espécie, quando possível. Totalizaram-se 182 espécimes, distribuídos em cinco gêneros (Aspirrhina Kyrbi, 1883; Brachymeria Westwood, 1829; Conura Spinola, 1837; Dirhinus Dalman, 1818 e Haltichella Spinola, 1811), 18 espécies identificadas e 32 morfotipadas. O gênero Conura foi o mais abundante e também o mais, com 12 espécies nomeadas e potencialmente 30 novas espécies. A vegetação nativa apresentou maior abundância e maior riqueza taxonômica, principalmente na capoeira. O eucalipto teve baixa diversidade com predominância de Brachymeria. A espécie C. nigricornis se apresentou com maior frequência relativa. Este estudo constitui a primeira lista de espécies de Chalcididae no semiárido. As amostragens realizadas no semiárido baiano evidenciaram uma diversidade relevante de Chalcidade quando comparada com outras regiões brasileiras.

ABSTRACT Chalcididae is a family of parasitoids with wide distribution and great richness, with almost 1,500 described species. Its diversity might be greater than that known today, mainly due to the few existing studies and its taxonomic complexity. Studies in semiarid regions are scarce and necessary to contribute to the biogeographic knowledge of the neotropical fauna. Therefore, the objective of this work was to record Chalcididae species that occur in the municipality of Barra do Choça, in the Semiarid region of the state of Bahia, Brazil. Five Malaise traps were distributed in two areas with native vegetation and an area with eucalyptus plantation, which were monitored monthly for two consecutive years. The insects were sorted and specimens of the family Chalcididae were identified at the species level, when possible. A total of 182 specimens from five genera (Aspirrhina Kyrbi, 1883; Brachymeria Westwood, 1829; Conura Spinola, 1837; Dirhinus Dalman, 1818, and Haltichella Spinola, 1811), and 18 species were identified and 32 were morphotyped. The genus Conura was the most abundant and the most diverse, with 12 species identified and 30 potential new species. The native vegetation presented higher abundance and higher taxonomic wealth, mainly in the area at initial stage of succession (capoeira). The eucalyptus area presented low diversity, with predominance of Brachymeria species. The species C. nigricornis presented the highest relative frequency. This study constitutes the first list of Chalcididae species in the Semiarid region of Brazil. The sampling carried out in the state Bahia showed an important diversity of Chalcididae species when compared to other regions of Brazil.

ABSTRACT The rose tortrix moth, Archips rosana (L.) (Lepidoptera: Tortricidae), is a pest that causes serious crop losses in apple orchards throughout the world. In this study, the population dynamics of A. rosana and its associated parasitoids were investigated in two provinces of Western Turkey (Denizli and Usak) in 2018 and 2019. A total of 318 egg masses, 300 larvae, and 129 pupae were collected from the survey areas. Although no parasitoids were detected in egg masses, ten parasitoid species belonging to Braconidae, Chalcididae, and Ichneumonidae (Hymenoptera), and Tachinidae (Diptera), were reared from the samples of larvae and pupae. Phytodietus astutus (Gravenhorst) (Ichneumonidae) was the most abundant parasitoid species, with a relative abundance of 35.1%, followed by Itoplectus maculator (Fabricius) (Ichneumonidae) represented by 27% of the recovered parasitoids. Moreover, P. astutus and Scambus inanis (Schrank) (Ichneumonidae) reared from the samples are the first records from Turkey, while Cotesia glomerata (L.) (Braconidae), Exochus sp.(Ichneumonidae), and Nemorilla maculosa (Meigen) (Tachinidae) are the first records from A. rosana. Using pheromone traps in the apple orchards, the first adult of A. rosana was caught on May 24 in Civril (Denizli) and on May 30 in Sivasli (Usak) in 2019.

RESUMEN El arrollador de frutales, Archips rosana (L.) (Lepidoptera: Tortricidae), es una plaga que causa graves pérdidas de cultivos en los manzanos de todo el mundo. En este estudio se investigó la dinámica poblacional de A. rosana y sus parasitoides asociados en dos provincias del oeste de Turquía (Denizli y Usak) en 2018 y 2019. Se recolectaron un total de 318 masas de huevos, 300 larvas y 129 pupas de las áreas de estudio. Aunque no se detectaron parasitoides en masas de huevos, diez especies de parasitoides pertenecientes a Braconidae, Chalcididae e Ichneumonidae (Hymenoptera) y Tachinidae (Diptera), se criaron a partir de las muestras de larvas y pupas. Phytodietus astutus (Gravenhorst) (Ichneumonidae) fue la especie parasitoide más abundante, con una abundancia relativa del 35,1%, seguida de Itoplectus maculator (Fabricius) (Ichneumonidae) representada por el 27% de los parasitoides recuperados. Además, P. astutus y Scambus inanis (Schrank) (Ichneumonidae) criados a partir de las muestras son los primeros registros de Turquía, mientras que Cotesia glomerata (L.) (Braconidae), Exochus sp. (Ichneumonidae) y Nemorilla maculosa (Meigen) (Tachinidae) son los primeros registros de A. rosana. Utilizando trampas de feromonas en los manzanos, el primer adulto de A. rosana fue capturado el 24 de mayo en Civril (Denizli) y el 30 de mayo en Sivasli (Usak) en 2019.

Abstract: Urban trees are a source of food resources, habitat and refuge for the biodiversity that occurs in cities. However, the taxonomic identity and status of each plant species as native and / or exotic of in an ecosystem influences its interactions with biodiversity. Wasps are one of the main insects present in terrestrial ecosystems, including urban ecosystems, as components of their biodiversity, playing an important role as biocontrol agents (predators and parasitoids) of populations of other insects associated with urban flora or as phytophagous. Seeking to deepen into the knowledge of the diversity of wasps in the city of Bogotá and their ecological interactions, in this study the diversity of wasps associated with three native and three exotic species frequently in urban parks of the city was evaluated. In total, 22 wasp families and 227 morphospecies were identified. The families Bethylidae, Chalcididae and Crabronidae are recorded for the first time in Bogotá. On the other part, the families Eulophidae, Ichneumonidae and Braconidae were the ones that contributed with the most richness and abundance in this study. Regarding their association with the evaluated plant species, a greater diversity of morphospecies associated with native tree species was found, however, there is an effect of the taxonomic identity and the factor park on the results that are discussed. It highlighting the importance of conserving the native urban flora in green spaces of Bogota’s city, in order to maintain and preserve the diversity of wasps principally with parasitoid and predator habits and thus enhance their role as natural biocontrol agents of insects that affect the health of urban trees, at the same time that ecological processes and functionality of this urban ecosystem would be stimulated.

Resumen: El arbolado urbano es fuente de recursos alimenticios, hábitat y refugio para la biodiversidad que ocurre en las ciudades. No obstante, la identidad taxonómica y el estatus de cada especie de planta como nativa y/o exótica de un ecosistema influencia sus interacciones con la biodiversidad. Las avispas son uno de los principales insectos presentes en los ecosistemas terrestres, incluyendo el urbano, como componentes de su biodiversidad, ejerciendo un rol importante como controladores biológicos (parasitoides y depredadores) de las poblaciones de otros insectos asociados a la flora urbana o como fitófagos. Buscando profundizar en el conocimiento de la diversidad de avispas en la ciudad de Bogotá y sus interacciones ecológicas, en este estudio se evaluó la diversidad de avispas asociadas a tres especies arbóreas nativas y tres exóticas frecuentes en los parques urbanos de la ciudad. En total se identificaron 22 familias de avispas y 227 morfoespecies. Las familias Bethylidae, Chalcididae y Crabronidae se registran por primera vez en Bogotá. Por su parte, las familias Eulophidae, Ichneumonidae y Braconidae fueron las que aportaron la mayor riqueza y abundancia en este estudio. Con respecto a su asociación con las especies vegetales evaluadas, se encontró una mayor diversidad de morfoespecies asociadas a las especies arbóreas nativas, sin embargo, hay un efecto de la identidad taxonómica de la especie y la variable parque sobre los resultados encontrados que se discuten. Se resalta la importancia de conservar la flora nativa en los espacios verdes de la ciudad de Bogotá, con el fin de mantener y conservar la diversidad de avispas principalmente de hábitos parasitoides y depredadores y así potencializar su rol como biocontroladores naturales de los insectos que afectan la salud del arbolado urbano, al mismo tiempo que se dinamizarían los procesos ecológicos y funcionalidad de este ecosistema urbano.

Resumen Desde el 2009 se ha evidenciado en las plantaciones de cacao del valle de Zarumilla (Tumbes, Perú), la presencia de un insecto plaga de especie aún no identificada, cuyas larvas perforan los tallos y frutos del cacao, y afectan su valor comercial por la invasión de microorganismos patógenos secundarios. Este trabajo de investigación que se realizó de marzo a agosto del 2014 tuvo como objetivos identificar y describir morfológicamente al barrenador del fruto y tallo del cacao, no reportado para las condiciones de este valle. Las recolectas se realizaron en campos cacaoteros del valle de Zarumilla y la crianza de los estados inmaduros, en el laboratorio de Entomología de la Universidad Nacional de Tumbes. Los resultados permitieron determinar que la especie cuya larva perfora los tallos y frutos del cacao es Carmenta theobromae. Se describen las principales características morfológicas de esta especie, referente a los estados de huevo, larva, pupa y adulto de ambos sexos. Además, del material biológico recolectado en campo durante el muestreo, se identificaron dos parasitoides a nivel de familia, un díptero Tachinidae recuperado de larvas y un himenóptero Chalcididae a partir de pupas. Se concluye que la especie que barrena los frutos de cacao en las plantaciones del valle de Zarumilla es C. theobromae. El presente estudio servirá de base para realizar futuras investigaciones de la biología y comportamiento en relación con los factores ambientales y determinar si esta especie tiene preferencia por determinados clones de cacao sembrados en la zona.

Abstract Since 2009, the presence of a pest insect of an unidentified species whose larvae pierce the stems and fruits of the cocoa plant, affecting the commercial value of the fruits by the invasion of secondary pathogenic microorganisms, has been demonstrated in the cocoa plantations of the Zarumilla valley, (Tumbes, Peru). This research work was carried out from March to August 2014 in order to identify and morphologically characterize the borer of the fruit and stem of the cocoa plant not reported for the conditions of this valley. The collections were made in cocoa fields of the Zarumilla valley and the breeding of immature states was carried out in the Entomology laboratory of the National University of Tumbes. The results made it possible to determine that the species whose larva pierces the cacao stems and fruits is Carmenta theobromae. The main morphological characteristics of this species are described, referring to the egg, larva, pupa and adult stages of both sexes. In addition, from the biological material collected in the field during the sampling, it was possible to identify two parasitoids at the family level, a dipteran Tachinidae recovered from larvae and a hymenopteran Chalcididae recovered from pupae. It is concluded that the species that burrows cocoa fruits in cocoa plantations in the Zarumilla Valley is C. theobromae. The present study will serve as the basis for biology and behavioral studies of in relation to environmental factors and to determine if this species has a preference for certain cocoa clones planted in the valley.

RESUMEN El museo entomológico de la Universidad Nacional Agronomía Bogotá (UNAB) en Colombia contiene colecciones de artrópodos de importancia en sistemas de producción agrícola y silvícola, provenientes en su mayoría de las regiones de los Andes orientales y la Amazonia cercana del país. Como aporte al conocimiento de la diversidad de avispas parasitoides asociadas a agroecosistemas (cacao en agroforestería, principalmente) de estas áreas geográficas, el presente trabajo presenta una primera aproximación al estudio de las avispas Chalcididae de este museo. Se organizó el estatus curatorial, los géneros representados fueron identificados, y las ocurrencias geográficas en extensión y altitud gráficamente representadas. La Colección Taxonómica Central (CTC) del museo UNAB cuenta con 214 especímenes de la familia, que corresponden a los géneros Brachymeria, Conura, Dirhinus, Ecuada, Haltichella, Notaspidium, Parastypiura y Stypiura, con registros para 17 departamentos. Los géneros Ecuada y Parastypiura, así como 11 especies de Conura se registran por primera vez para el país.

ABSTRACT The entomological museum of Universidad Nacional, Faculty of Agricultural Sciences, Bogota, (UNAB) Colombia, conserves several arthropod collections. These collections are considered of great interest to several agricultural and silvicultural production systems in the eastern Andes and the nearby Amazon region (Caqueta and Putumayo provinces) of the country. As a contribution to the knowledge of the diversity of parasitoid wasps associated to agroecosystems (cacao in agroforestry systems, mainly) of these geographical areas, the current research presents a first approach to the study of Chalcididae wasps at this museum. The curatorial status was organized, the represented genera identified, and the geographic occurrences in extension and altitude graphically represented. The Central Taxonomic Collection (CTC) is the main collection at UNAB. It contains 214 specimens of the family Chalcididae that correspond to the genera Brachymeria, Conura, Dirhinus, Haltichella, Notaspidium, Stypiura, Ecuada, and Parastypiura, with records from 17 provinces. The genera Ecuada and Parastypiura, as well as 11 species of Conura, are recorded for the country for the first time.

Resumo: Os objetivos deste trabalho foram conhecer a fauna de Hymenoptera associada à cultura da melancia e avaliar a influência das armadilhas Pitfall, Moericke e McPhail na captura desses insetos, em ambiente semiárido no estado do Rio Grande do Norte. O levantamento foi realizado entre os meses de agosto e setembro de 2011, em área de produção comercial de melancia cv. Crimson Sweet. As coletas dos himenópteros foram realizadas, semanalmente, durante o ciclo da cultura. Para captura dos insetos, foram utilizados três tipos de armadilhas, Pitfall, Moericke e McPhail, na densidade de 20, 20 e 1 armadilha por hectare, respectivamente. As armadilhas foram instaladas sete dias após o plantio das sementes, e mantidas na área até a colheita dos frutos. Foram coletados um total de 3.123 himenópteros pertencentes a 10 superfamílias, distribuídas em 24 famílias. Formicidae foi a mais representativa, com abundância relativa total de 54,43%, seguida por Apidae com 17,96%. Foi observada também a presença de 18 famílias de himenópteros parasitoides (18,89%), com destaque para Platygastridae (6,60%), Encyrtidae (2,79%), Chalcididae (2,56%), Mymaridae (2,56%), Pompilidae (1,15%) e Trichogrammatidae (1,09%). Ressalta-se ainda a ocorrência das famílias de predadores Crabronidae (6,34%), Vespidae (2,24%) e Sphecidae (0,10%). Dentre as armadilhas, Moericke capturou a maior diversidade de Hymenoptera (24 famílias), seguida por Pitfall (11 famílias) e McPhail (sete famílias).

ABSTRACT: The aims of this study were to identify the Hymenoptera fauna associated with watermelon crops and assess the influence of Pitfall, Moericke and McPhail traps in capturing these insects in the semiarid environment of the state of Rio Grande do Norte, Brazil. The survey was conducted between the months of August and September, 2011, in a commercial watermelon cv Crimson Sweet production área. The collection of the Hymenoptera was conducted weekly during the crop cycle. To capture the insects, three types of traps were used, Pitfall, Moericke and McPhail, in densities 20, 20 and 1 trap per hectare, respectively. The traps were installed seven days after seeding and maintained in the area until harvest. A total of 3,123 Hymenoptera were collected, belonging to 10 superfamilies, and 24 families. Formicidae was the most representative, with a total relative abundance of 54.43%, followed by Apidae with 17.96%. The presence of 18 families of parasitoids (18.89%) was also observed, notably Platygastridae (6.60%), Encyrtidae (2.79%), Chalcididae (2.56%), Mymaridae (2.56%), Pompilidae (1.15%) and Trichogrammatidae (1.09%). The occurrence of predators from the families Crabronidae (6.34 %), Vespidae (2.24 %) and Sphecidae (0.10%) is noteworthy. Among the traps, Moericke captured the greatest diversity of Hymenoptera (24 families), followed by Pitfall (11 families) and McPhail (seven families) traps.

The knowledge of the natural enemies associated with a culture is one of the basic aspects to think of when applying strategies for biological control. The aim of this study is to obtain information about the complex of natural enemies present in two cherry orchards in southern Patagonia where no application of agrochemicals takes place. Surveys were carried out weekly in order to collect predators and parasitoids in the orchards. Determination of individuals was carried out by means of entomological determination keys. Furthermore, specialized taxonomists were consulted for determination of doubtful individuals. More than 170 individuals were determined from both sites, of which around 70% belonged to the families Braconidae, Ichneumonidae and Chalcididae, which are known for their great potential as agents for biocontrol.

El conocimiento de los agentes benéficos asociados a un cultivo forma parte de los aspectos básicos que deben tenerse en cuenta a la hora de establecer estrategias de control biológico. El objetivo del trabajo es brindar información acerca del complejo de enemigos naturales hallado en dos cultivos de cerezo en la Región Patagonia Sur donde no se emplean agroquímicos. Para ello, se desarrollaron monitoreos semanales con el fin de recolectar predadores y parasitoides sobre el cultivo. La determinación de los individuos se realizó con ayuda de claves entomológicas adecuadas. Se contó con la colaboración de especialistas taxonómos. Se obtuvieron más de 170 individuos en ambos predios, entre las cuales el 70% pertenece a las familias Braconidae, Ichneumonidae y Chalcididae (Orden Hymenoptera) que son las que poseen reconocida acción como agentes de biocontrol.

La diversidad de enemigos naturales de Neoleucinodes elegantalis está asociada a la solanácea hospedera y al ambiente ecológico donde se cultivan estas plantas en Colombia. Se recolectaron huevos y pupas de N. elegantalis en campo, se llevaron al laboratorio donde se mantuvieron en condiciones controladas hasta la emergencia de los parasitoides asociados a estos estados biológicos. Los parasitoides de larvas se recuperaron en cámaras de cría a partir de frutos infestados. En lulo (Solanum quitoense) se registró la mayor diversidad y amplia distribución de himenópteros parasitoides de larvas y pupas. Como parasitoides de larvas se registraron los bracónidos: Apanteles sp., Bracon spp. (dos morfoespecies) y Chelonus sp., y a la mosca Lixophaga sp. (Diptera: Tachinidae). Como parasitoides de pupas se reconocieron a las familias Ichneumonidae, Chalcidiidie y Eulophidae, siendo los primeros más abundantes, destacándose Pimplasanguinipes, Lymeon sp. y Neotheronia sp. En Chalcididae Brachymeria sp., y en Eulophidae el más representativo fue Trichospilus diatraea. En tomate de árbol (Solanum betaceum) el parasitoide más frecuente y con mayor distribución fue Copidosoma sp. (Encyrtidae). El parasitoide de huevos Trichogramma sp. (Trichogrammatidae) se encontró únicamente en tomate de mesa (Solanum lycopersicum). Se describe el comportamiento parasítico observado en campo, la distribución geográfica de los parasitoides y se plantean recomendaciones prácticas para su conservación en cultivos de solanáceas incluidos en este estudio.

The diversity of natural enemies for Neoleucinodes elegantalis depends on the host plant and the ecological environment where these plants are grown. Eggs and pupae of N. elegantalis were collected and keep under controlled conditions until the emergence of parasitoids associated to these stages. Parasitoids of larvae were recovered in brood chambers from infested fruits. The highest diversity of species, abundance and wide distribution of hymenopteran parasitoid larvae and pupae were registered on lulo (Solanum quitoense). The most important larval parasitoids were the braconids: Apanteles sp., Bracon spp. (two morphospecies), and Chelonus sp., also the fly Lixophaga sp. (Diptera: Tachinidae). As parasitoids for pupae, Ichneumonidae, Eulophidae and Chalcididae families were registered. The most abundant were Ichneumonidae species, with Pimpla sanguinipes and, species belonging to the genera Lymeon sp. and Neotheronia sp. Brachymeria sp. (Hymenoptera: Chalcididae) and mostly Trichospilus diatraea in Eulophidae were found infesting pupae of N. elegantalis. Qn tree tomato (Solanum betaceum), the most abundant, more frequently collected, and widely distributed parasitoid was Copidosoma sp. (Encyrtidae). The egg parasitoid Trichogramma sp. (Trichogrammatidae) was found only on table tomatoes (Solanum lycopersicum). We describe the parasitic behavior observed in the field and, the geographic distribution of parasitoids. We discuss about conservation practices in solana-ceous crops.

Mortalidade de Plutella xylostella (Lepidoptera, Plutellidae) por parasitóides na Província de Santa Fé, Argentina. Plutella xylostella (Linnaeus, 1758) (Lepidoptera, Plutellidae) causa danos econômicos severos em repolho, Brassica oleracea variedade capitata L. (Brassicaceae), na área de horticultura localizada na Província de Santa Fé, Argentina. O uso excessivo de inseticidas de largo espectro afeta a ação dos inimigos naturais de P. xylostella em repolho. O presente trabalho teve como objetivo identificar os parasitóides de P. xylostella e determinar sua influência na mortalidade de larvas e pupas em Santa Fé, Argentina. Coletas semanais de larvas e pupas em culturas de repolho foram realizadas aleatoriamente na área durante a primavera de 2006 e 2007, registradas pelo estágio de desenvolvimento: L1 e L2 (Ls = larvas pequenas), (Lm = larvas médias) L3, L4 (Ll = larvas grandes) pré-pupa e pupa (P). Cada indivíduo foi observado diariamente no laboratório até a emergência dos adultos da praga ou dos parasitóides. Foram identificadas as espécies de parasitóides o número de instars e a porcentagem de mortalidade. Os parasitóides registrados foram: Diadegma insulare (Cresson, 1875) (Hymenoptera, Ichneumonidae), Oomyzus sokolowskii (Kurdjumov, 1912) (Hymenoptera, Eulophidae), Cotesia plutellae (Kurdjumov, 1912) (Hymenoptera, Braconidae) e uma espécie não identificada pertencente à família Chalcididae. Além dos parasitóides, um fungo entomopatogênico não identificado foi registrado. Em 2006, os parasitóides mais bem sucedidos foram D. insulare e O. Sokolowskii; enquanto que em 2007 apenas D. insulare exerceu um controle satisfatório, atacando os instares iniciais da praga.

Mortality of Plutella xylostella (Lepidoptera, Plutellidae) by parasitoids in the Province of Santa Fe, Argentina. Plutella xylostella (Linnaeus, 1758) (Lepidoptera, Plutellidae) larvae cause severe economic damage on cabbage, Brassica oleracea L. variety capitata (Brassicaceae), in the horticultural fields in the Province of Santa Fe, Argentina. Overuse of broad spectrum insecticides affects the action of natural enemies of this insect on cabbage. The objectives of this work were to identify the parasitoids of P. xylostella and to determine their influence on larva and pupa mortality. Weekly collections of larvae and pupae were randomly conducted in cabbage crops during spring 2006 and 2007. The immature forms collected were classified according to their developmental stage: L1 and L2 (Ls = small larvae), L3 (Lm = medium larvae), L4 (Ll = large larvae), pre-pupae and pupae (P). Each individual was observed daily in the laboratory until the adult pest or parasitoid emergence. We identified parasitoids, the number of instar and the percentage of mortality of P. xylostella for each species of parasitoid. Parasitoids recorded were: Diadegma insulare (Cresson, 1875) (Hymenoptera, Ichneumonidae), Oomyzus sokolowskii (Kurdjumov, 1912) (Hymenoptera, Eulophidae), Cotesia plutellae (Kurdjumov, 1912) (Hymenoptera, Braconidae) and an unidentified species of Chalcididae (Hymenoptera). Besides parasitoids, an unidentified entomopathogenic fungus was also recorded in 2006 and 2007. In 2006, the most successful parasitoids were D. insulare and O. sokolowskii, while in 2007 only D. insulare exerted a satisfactory control and it attacked the early instars of the pest.

Vespas do gênero Trypoxylon apresentam comportamento solitário e aprovisionam seus ninhos de forma massiva com aranhas paralisadas. Algumas espécies utilizam cavidades preexistentes para nidificação, o que facilita sua amostragem e estudo. Neste trabalho, dados sobre a biologia de nidificação de quatro espécies de Trypoxylon (Trypargilum) - T. rogenhoferi, T. lactitarse, T. aurifrons e T. nitidum - são apresentados. As espécies foram amostradas por meio de ninhos-armadilha durante três anos em Araras e dois anos em Rifaina e São Carlos (São Paulo). As localidades de estudo foram subdivididas em sítios de amostragem. Foram obtidos 2.698 ninhos de himenópteros solitários, dos quais 2.268 foram fundados por espécies de Trypoxylon. Intensa atividade de nidificação foi observada principalmente na estação quente e chuvosa (outubro-março). Os ninhos-armadilha utilizados para nidificação pelas diferentes espécies apresentaram dimensões significativamente diferentes. A família de aranhas mais utilizada para aprovisionamento foi Araneidae; no entanto, as espécies de vespas diferiram quanto às espécies forrageadas. O principal parasitóide das quatro espécies foi Melittobia, mas indivíduos das famílias Chrysididae, Ichneumonidae, Chalcididae e Sarcophagidae também foram verificados. Observou-se que as espécies de Trypoxylon coexistem temporalmente e que nas três localidades cada espécie nidificou com maior freqüência em um sítio particular, sugerindo uma ocupação diferencial do habitat. A partição do habitat aparentemente homogêneo pode ser resultado de "competição aparente" mediada por inimigos naturais comuns.

Wasps of the genus Trypoxylon are solitary and females mass-provision their nests with paralyzed spiders. Some species use successfully trap-nests for nesting foundation, making easier their sampling and study. This paper reports data about nesting biology of four species of Trypoxylon (Trypargilum) - T. rogenhoferi, T. lactitarse, T. aurifrons and T. nitidum. These species were sampled by trap-nests during three years in Araras and two years in São Carlos and Rifaina (São Paulo). These areas were subdivided into sampling sites. A total of 2,698 nests of solitary hymenopterans were collected and most of them (2,268) were founded by Trypoxylon species. Nesting activity was higher in the warm, rainy season (October-March). The trap-nests used by the different species showed significantly different dimensions. Araneidae was the spider family mainly used for provision, but a species-specific provisioning was observed. The most important parasitoid of the four species was Melittobia, but adult chrysidids, ichneumonids, chalcidids and sarcophagids also attacked their nests. In the three areas, the different species of Trypoxylon coexist temporally but each of them built their nests frequently in a specific site. This result may suggest differential occupation of the habitat. This habitat partition of an apparently homogeneous area may be a result of an "apparent competition" shaped by shared natural enemies.

Uma lista das espécies de Chalcididae (Hymenoptera, Insecta) é apresentada para o Estado do Espírito Santo. Os exemplares são procedentes de 22 localidades e pertencem a 37 espécies e 11 gêneros, sendo que somente duas espécies e cinco gêneros já haviam sido registrados para o Estado. Sete espécies e um gênero são novos registros para o Brasil e duas espécies são registradas pela primeira vez para a região Neotropical. A composição desta fauna é discutida em relação à distribuição geográfica das espécies.

A checklist of Chalcididae (Hymenoptera, Insecta) species is presented for the state of Espírito Santo, Brazil. Specimens were collected in 22 localities and belong to 37 species and 11 genera. Only two species and five genera have been previously recorded for the state. Seven species and one genus are recorded for the first time for Brazil and two species are new records for the Neotropical region. The geographic distribution of these species is discussed.