[Social wasps (Hymenoptera: Vespidae) diversity in a cerrado vegetation in Bahia State, Brazil]. / Diversidade de vespas sociais (Hymenoptera: Vespidae) em áreas de cerrado na Bahia.

This study aimed to analyze the social wasps species diversity in a cerrado vegetation at the west region of the State of Bahia. Nineteen species of social wasps were found, with Chartergus globiventris de Saussure, Chartergellus communis Richards and Metapolybia cingulata (Fabricius) being recorded for the first time for the State of Bahia. The arboreous cerrado showed a higher species richness (S=19) and diversity (H'=2.33) than the agroecossistems (farms) (S=8; H'=1,84). However, nest abundance was higher at the agroecossystems (N=107 nests) than at the arboreous cerrado (N=87 nests). The physiognomy of 'cerrado campo sujo' showed the lowest abundance of social wasps colonies (N=61 nests) and intermediate values of species richness (S=13) and diversity (H'=2.20).

Diversidade de vespas sociais (Hymenoptera: Vespidae) em áreas de cerrado na Bahia / Social wasps (Hymenoptera: Vespidae) diversity in a cerrado vegetation in Bahia State, Brazil

A diversidade de espécies de vespas sociais associadas à vegetação de cerrado no Oeste da Bahia foi analisada neste estudo. Dentre as dezenove espécies de vespas sociais encontradas, Chartergus globiventris de Saussure, Chartergellus communis Richards e Metapolybia cingulata (Fabricius) são registradas pela primeira vez para o estado. O cerrado arbóreo, apesar de apresentar maior riqueza (S = 19) e maior diversidade de espécies (H' = 2,33), apresentou níveis de abundância (N = 87 ninhos) inferiores aos sistemas agrícolas (N = 107 ninhos; S = 8 espécies; H' = 1,84). A fisionomia de cerrado campo sujo apresentou a menor abundância de colônias de vespas sociais (N = 61) e valores intermediários de riqueza (S = 13) e diversidade (H' = 2,20).

This study aimed to analyze the social wasps species diversity in a cerrado vegetation at the west region of the State of Bahia. Nineteen species of social wasps were found, with Chartergus globiventris de Saussure, Chartergellus communis Richards and Metapolybia cingulata (Fabricius) being recorded for the first time for the State of Bahia. The arboreous cerrado showed a higher species richness (S = 19) and diversity (H' = 2,33) than the agroecossistems (farms) (S = 8; H' = 1,84). However, nest abundance was higher at the agroecossystems (N = 107 nests) than at the arboreous cerrado (N = 87 nests). The physiognomy of "cerrado campo sujo" showed the lowest abundance of social wasps colonies (N = 61 nests) and intermediate values of species richness (S = 13) and diversity (H' = 2,20).

Diversity and community structure of social wasps (Hymenoptera: Vespidae) in three ecosystems in Itaparica island, Bahia State, Brazil.

We studied the structure and composition of communities of social wasps associated with the three insular ecosystems: mangrove swamp, the Atlantic Rain Forest and the 'restinga'- lowland sandy ecosystems located between the mountain range and the sea. Three hundred and ninety-one nests of 21 social wasp species were collected. The diversity of wasps found in each ecosystem was significantly correlated to the diversity of vegetation in each of the three physiognomies, (r(2) = 0.85; F(1.16) = 93.85; P < 0. 01). The Tropical Atlantic Forest physiognomy had higher species richness (18 species), followed by the restinga (16 species) and the mangrove (8 species) ecosystems.

Diversity and community structure of social wasps (Hymenoptera: Vespidae) in three ecosystems in itaparica island, Bahia State, Brazil

We studied the structure and composition of communities of social wasps associated with the three insular ecosystems: mangrove swamp, the Atlantic Rain Forest and the 'restinga'- lowland sandy ecosystems located between the mountain range and the sea. Three hundred and ninety-one nests of 21 social wasp species were collected. The diversity of wasps found in each ecosystem was significantly correlated to the diversity of vegetation in each of the three physiognomies, (r² = 0.85; F(1.16) = 93.85; P < 0. 01). The Tropical Atlantic Forest physiognomy had higher species richness (18 species), followed by the restinga (16 species) and the mangrove (8 species) ecosystems.

A estrutura e a composição de comunidades de vespas sociais associadas a três ecossistemas insulares com fisionomias distintas: Manguezal, Mata Atlântica e Restinga foram analisadas. Foram coletados 391 ninhos de 21 espécies de vespas sociais. A diversidade de vespas encontrada em cada ecossistema está significativamente correlacionada à diversidade de formas de vida vegetal encontrada em cada ambiente estudado (r² = 0,85; F(1.16) = 93,85; P < 0, 01). A floresta tropical Atlântica foi o ecossistema com maior riqueza de vespas (18 espécies), seguida pela Restinga (16 espécies) e pelo Manguezal (8 espécies).

Infestação natural de Anastrepha spp. (Diptera: Tephritidae) em umbu-cajá no Município de Cruz das Almas, Recôncavo Baiano / Natural Infestation of Anastrepha spp. (Diptera: Tephritidae) in Spondias sp. in the Municipality of Cruz das Almas, Recôncavo Baiano, Brazil

Este trabalho teve como objetivo conhecer os índices de infestação natural, o percentual de emergência dos adultos e as espécies de moscas-das-frutas associadas ao umbu-cajá (Spondias sp.) no Recôncavo Baiano. Foram coletadas 49 amostras dos frutos entre os meses de março a julho de 2002, totalizando 4.095 frutos (74,4 kg), dos quais obtiveram-se 30.579 pupários, com emergência de 37,4 por cento de tefritídeos. Anastrepha obliqua (Macquart) (99,59 por cento) foi a espécie dominante, seguida por A. fraterculus (Wied.) (0,24 por cento) e A. sororcula Zucchi (0,17 por cento). O índice de infestação foi de 410,7 pupários por quilograma de frutos e 7,5 pupários por fruto.

The objective of this work was to quantify the natural infestation, pupal survival and fruit fly species associated to fruits of Spondias sp. in the Recôncavo Baiano, State of Bahia, Brazil. From March to July, 2002, 49 samples of fruits were collected with the total of 4,095 fruits and a biomass of 74.4kg. About 30,579 fruit fly puparia were obtained from which 37.4% yielded adults. Anastrepha obliqua (Macquart) (99.6%) was the dominant species, followed by A. fraterculus (Wied.) (0.24%) and A. sororcula Zucchi (0.17%). The infestation index was 410,7 pupae for kilogram of fruits and 7.5 pupae per fruit.

Registro de Neosilba zadolicha McAlpine & Steyskal (Diptera: Lonchaeidae) em Umbu-cajá (Anacardiaceae) / Record of Neosilba zadolicha McAlpine & Steyskal (Diptera: Lonchaeidae) in Spondias sp. (Anacardiaceae)

Neosilba zadolicha McAlpine & Steyskal is reported for the first time in “umbucajazeira” fruits (Spondias sp.), in Cruz das Almas, State of Bahia, Brazil. A total of 51 specimens wereobtained from 4,100 fruits between March and July 2002. This is the first record of N. zadolicha in an Anacardiaceae species.

Relata-se pela primeira vez a ocorrência de Neosilba zadolicha McAlpine & Steyskal em frutos de umbu-cajazeira (Spondias sp.) no município de Cruz das Almas, BA. O total de 51 exemplaresfoi obtido de 4100 frutos entre março e julho de 2002. Este é o primeiro registro de N. zadolicha em uma espécie de Anacardiaceae.