Inventário da fauna de Euglossinae (Hymenoptera, Apidae) do baixo sul da Bahia, Brasil

Abstract

This paper reports the results concerning collection of Euglossinae bees in a mangrove ecosystem in Valença (13°22 '08"S and 39°04'20"W), Bahia. These samples were made twice a month, for a year. The chemical baits Citronella, Eucalyptol, Eugenol, Metyl Salicylate and Vanillin attracted 1,144 speci- mens distributed among twelve species and two genera: Eu/aema (Lepeletier, 1841) and Eug/ossa (Latreille, 1802). The predominant bee species was Eu/aema nigri/a (Lepeletier, 1841) consisting of 49.4% of the collected specimens, followed by Eug/ossa cordata (Linnaeus, 1758) with 44.88%, Eug/ossa imperialis (Cockerell, 1922) with 2.4% and Eu/aema merianaflavescells (Friese, 1899) with 1.6%. Theothers species, considering sporadic visitors, Eug/ossa securigera (Dressler, 1982), Eug/ossa cha/ybea/a (Friese, 1925), Eug/ossa Iiopoda (Dressler, 1982), Eug/ossa gaiallii (Dressler, 1982), Eug/ossa towlIselldi (Cockerell, 1904), Eug/ossa trunca/a (Rebêlo & Moure, 1995), Eug/ossa me/anotricha (Moure, 1967) and Eug/ossa sapphirilla (Moure, 1968) represented together only 1.8% 01' the total sample. The Euglossinae were more active from October to May. Eucalyptol was the most attractive bait, attracting 1,120 specimens. Methyl Salicylate attracted 17 specimens, followed by Eugenol, which attracted 04 specimens and Vanillin, which attracted 03 specimens. Citronella was not an attractive chemical.