Egg parasitoids of Edessa meditabunda (Fabricius) (Pentatomidae) in lettuce crop. This study evaluated the occurrence of parasitoids in eggs of the stink bug, Edessa meditabunda (Fabricius, 1794) (Heteroptera, Pentatomidae) found on lettuce crop in Mato Grosso State, Brazil. Samples were collected in the vegetable garden "Cheiro Verde", in the municipality of Tangará da Serra, in curly lettuce. A bed of lettuce was selected randomly, where the eggs of E. meditabunda were collected. Five-hundred and seventy eight eggs of E. meditabunda were collected, 86.3% of them parasitized by Telenomus podisi Ashmead, 1893 (Hymenoptera, Platygastridae), Trissolcus urichi Crawford, 1913 (Hymenoptera, Platygastridae) and Neorileya albipes Girault, 1913 (Hymenoptera, Eurytomidae), representing respectively 57.0%, 38.2% and 4.8% of the emerged individuals. This is the first record of these three species parasitizing eggs of E. meditabunda in lettuce.

Telenomus chrysoperlae sp. nov. (Hymenoptera) egg parasitoid of Chrysoperla asoralis (Bank) (Neuroptera) from Mendoza , Argentina , is described and illustrated. It is compared with the congeners T. chrysopae Ashmead and T. tridentatus Johnson & Bin.

Se describe e ilustra Telenomus chrysoperlae sp. nov. (Hymenoptera) que se comporta como parasitoide de huevos de Chrysoperla asoralis (Bank) (Neuroptera) en Mendoza, Argentina. Se compara con las especies afines T. chrysopae Ashmead y T. tridentatus Johnson & Bin.

The 20 type specimens of Eupelmidae and 230 of Trichogrammatidae (Hymenoptera: Chalcidoidea) housed at the Museo de La Plata, Argentina (División Entomología) were examined and listed, providing update information on categories of types, data of collection and hosts. The types belong to six species of Eupelmidae described by De Santis, and 26 of Trichogrammatidae by De Santis (22) and Viggiani (4).

Fueron examinados y listados los 20 tipos de Eupelmidae y los 230 de Trichogrammatidae depositados en el Museo de La Plata (División Entomología); para cada taxón se brinda la información actualizada acerca de los materiales tipo, datos de recolección y huéspedes. Estos tipos pertenecen a seis especies de Eupelmidae descriptas por De Santis y 26 de Trichogrammatidae por De Santis (22) y Viggiani (4).

Baeus metazygiae sp. nov. is described as an endoparasitoid of the egg sacs of Alpaida veniliae (Araneidae) from Rio Grande, Brazil. A list of the neotropical species of Baeus is given including new distribution and host records.

Se describe Baeus metazygiae sp. nov. como endoparasitoide de ootecas de la araña Alpaida veniliae (Araneidae) de Rio Grande, Brasil. Se brinda un listado de las especies neotropicales del género Baeus, incluyendo nuevos registros de distribución y huéspedes.

The 293 type specimens of Aphelinidae and 24 Signiphoridae (Chalcidoidea) housed at the Museo de La Plata (División Entomología) were examined and listed, providing update information on categories of types, data of collection and host. The types belong to 30 species and two subspecies of Aphelinidae described by the following authors: Annecke & Insley (1), Blanchard (2), Compere (4), De Bach & Rosen (1), De Santis (21), and De Santis & Vidal Sarmiento de Regalía (1); and nine species of Signiphoridae described by the following authors: De Santis (6) and Kerrich (3).

Fueron examinados y listados los 293 tipos de Aphelinidae y 24 de Signiphoridae depositados en el Museo de La Plata (División Entomología), para cada taxón se brinda la información actualizada acerca de los materiales tipo, datos de recolección y huéspedes. Estos tipos pertenecen a 30 especies y dos subespecies de Aphelinidae descriptas por los siguientes autores: Annecke & Insley (1), Blanchard (2), Compere (4), De Bach & Rosen (1), De Santis (21), y De Santis & Vidal Sarmiento de Regalía (1); y nueve especies de Signiphoridae descriptas por los siguientes autores: De Santis (6) y Kerrich (3).

Este estudo relata a primeira ocorrência de Coptera haywardi Loiácono como parasitóide de pupa de Tephritidae que infestam frutos no Brasil. Este diapriídeo foi obtido de frutos de Eugenia uniflora (pitanga) infestados por Anastrepha fraterculus (Wiedemann) e/ou Anastrepha sororcula Zucchi. Foram também identificadas outras duas espécies de parasitóides de pupa: Pachrycrepoideus vindemmiae Rondani e Spalangia endius Walker (Pteromalidae). Quatro espécies de parasitóides de larva-pupa foram também obtidas: Doryctobracon areolatus (Szépligeti), Utetes (Bracanastrepha) anastrephae (Viereck), Opius bellus Gahan (Braconidae) e Aganaspis pelleranoi (Brèthes) (Figitidae).

This study reports the first occurrence of Coptera haywardi Loiácono as a pupal parasitoid of fruit-infesting Tephritidae in Brazil. We reared this diapriid from fruits of Eugenia uniflora (Surinam cherry) infested by Anastrepha fraterculus (Wiedemann) and/or Anastrepha sororcula Zucchi. We also identified two other species of pupal parasitoids: Pachrycrepoideus vindemmiae Rondani and Spalangia endius Walker (Pteromalidae). Four species of larval-pupal parasitoids were also recorded: Doryctobracon areolatus (Szépligeti), Utetes (Bracanastrepha) anastrephae (Viereck), Opius bellus Gahan (Braconidae) and Aganaspis pelleranoi (Brèthes) (Figitidae).

As vespas do "complexo" Proctotrupoidea (Ceraphronoidea, Proctotrupoidea strictu sensu e Platygasteroidea) são um grupo grande e diverso de Hymenoptera parasítica, relativamente antigo, com fósseis a partir do período Jurássico. Todos os proctotrupóideos são parasitóides ou hiperparasitóides de outros artrópodes, atacando a maioria dos grupos de insetos terrestres bem como centípedes e aranhas. O presente estudo resume o conhecimento desse complexo no Brasil. Foi listado um total de 221 espécies, distribuídas nas famílias Ceraphronidae (1), Megaspilidae (1), Diapriidae (84), Monomachidae (9), Pelecinidae (2), Proctotrupidae (12), Platygastridae (20), Scelionidae (92). As vespas desse complexo foram revisadas taxonomicamente, discutindo-se também, os registros fósseis, atualização da distribuição geográfica e os hospedeiros associados.

The wasps of the "Proctotrupoidea complex" (Ceraphronoidea, Proctotrupoidea y Platygasteroidea) are a very large and diverse group of parasitic Hymenoptera. It is a relatively old group, with fossils from the Jurassic period. All of them are parasitoids or hiperparasitoids of other arthropods, attacking most groups of terrestrial insects as well as centipeds and spiders. The present study summarizes the knowledge of this complex in Brazil. A total of 221 species are listed; they are distributed in the families Ceraphronidae (1), Megaspilidae (1), Diapriidae (84), Monomachidae (9), Pelecinidae (2), Proctotrupidae (12), Platygastridae (20), Scelionidae (92). Taxonomy, fossil records, distribution and hosts are reviewed.

A redescription of the genus Bruchopria and its two species, B. hexatoma Kieffer (female and male) and B. pentatoma Kieffer (male only) is presented. New record for B. hexatoma from Argentina is provided. Some aspects of diapriid biology with emphasis on their myrmecophilic evidence and association with ants are discussed. Scanning photographs of morphological structures are included.

Parasitóides de ovos (Hymenoptera: Scelionidae) do complexo de percevejos da soja (Glycine max L.) são candidatos potenciais a agentes de controle nos programas de manejo integrado de pragas da soja no Brasil. A correta identificação de espécies e/ou raças desses parasitóides é importante para implementação do uso do controle biológico. A técnica de "random amplified polymorphic DNA" (RAPD) foi usada para analisar indivíduos machos de Telenomus podisi Ashmead e Trissolcus spp. coletado em uma área de soja em Brasília em 1996. A análise de 18 oligonucleotídeos usados para os indivíduos de Trissolcus spp. revelou diferentes perfis de RAPD entre as espécies, indicando a possibilidade de utilizar esses marcadores para diferenciar T. teretis Johnson, T. urichi Crawford e T. basalis (Wollaston). Os 13 oligonucleotídeos usados para analisar 33 indivíduos de uma população de T. podisi produziram 103 bandas. Foram observados diferentes genótipos nessa população, que pela análise fenética com os dados de RAPD se agruparam com alta homogeneidade (similaridade >78,2%).

The solitary egg parasitoids (Hymenoptera: Scelionidae) of Pentatomidae species complex are potential candidates for soybean (Glycine max L.) integrated pest management programs in Brazil. The correct identification of species and strains of these parasitoids is necessary to implement the use of biological control. Polymerase chain reaction (PCR) was used to generate random amplification of polymorphic DNA (RAPD) from male individuals of Telenomus podisi Ashmead and Trissolcus spp. collected in a soybean field in Brasília, Brazil in 1996. The analysis of 18 primers used to screen Trissolcus spp. individuals revealed different patterns related to the species analyzed. These results indicate the potential of RAPD markers to differentiate T. teretis Johnson, T. urichi Crawford and T. basalis (Wollaston). The 13 selected primers used to analyze T. podisi individuals produced 103 clear polymorphic scorable markers. Different genotypes were observed within this population analyzed, although the cluster analysis applied to the RAPD data showed high homogeneity (similarity >78.2%) among individuals.

The mortality of Euschistus heros (F.) at the egg stage was studied at the field. The experiments were carried out in Planaltina - D.F., Brazil, in 1993 and 1994, on sunflower (Helianthus annuus) cultivated following the soybean (Glycine max) crop season. Egg masses found in the field were marked and checked daily for four days, and taken to the laboratory to check the total number of eggs, eggs that failed to hatch and those parasitized or destroyed by predators. The incidence of parasitism in eggs of E. heros was high in 1993 (65%) and in 1994 (80%). Five species of parasitoids were recovered: Telenomus podisi Ashmead, Trissolcus basalis (Wollaston), Trissolcus teretis Johnson, Trissolcus urichi Crawford (Scelionidae) and Eupelmus sp. (Eupelmidae). T. podisi was the most frequent species. Egg mortality due to predators was 17% in 1993 and 13% in 1994.