Community of orchid bees (Hymenoptera: Apidae) in transitional vegetation between Cerrado and Atlantic Forest in southeastern Brazil.

Comunidade de Euglossina (Hymenoptera: Apidae) em área de transigo entre Cerrado e Mata Atlântica no sudeste do Brasil. (Portuguese)

MATA Atlantica (Brazil); SOUTHEAST Brazil; BRAZIL

The community of orchid bees (Hymenoptera: Apidae: Euglossina) was studied at an area in the transition between the Cerrado and Atlantic Forest biomes, from March, 2010 to February, 2011 in the Barroso region, state of Minas Gerais, eastern Brazil. Orchid-bee males were collected with bait traps containing three different scents (cineole, eugenol and vanillin) and with entomological nets for collecting bees on flowers. A total of 614 orchid-bee males were collected us-ing aromatic traps, belonging to four genera and 15 species. Twenty-five female specimens belonging to two genera and at least three species were collected on flowers. Eulaema (Apeulaema) nigrita Lepeletier, 1841 was the most abun-dant species (50% of collected specimens), followed by Euglossa (Euglossa) truncata Rebelo & Moure, 1996 (28%). Cineole was the most attractive compound (66.5% of males and 13 species), followed by eugenol (16% and 9 species) and vanillin (13.5% and 4 species). Eulaema (Apeulaema) marcii Nemésio, 2009 and Eufriesea auriceps (Friese, 1899) were attracted to all scents, whereas Euglossa species were collected only in cineole and eugenol. [ABSTRACT FROM AUTHOR]

A comunidade de abelhas-das-orquideas (Hymenoptera: Apidae: Euglossina) foi estudada em uma área de transigo entre o Cerrado e a Mata Atlàntica, de março de 2010 a fevereiro de 2011, na regiào de Barroso, estado de Minas Gerais, sudeste do Brasil. Foram utilizadas armadilhas aromáticas utilizando-se très tipos de iscas (cineol, eugenol e vanilina) e redes entomológicas para a captura de abelhas em flores. Foram coletados 614 machos de Euglossina nas armadilhas aromáticas, pertencentes a quatro géneros e quinze espécies, e vinte e cinco espécimes em flores, pertencentes a dois géneros e très espécies. Eulaema (Apeulaema) nigrita Lepeletier, 1841 foi a espécie mais comuni (50% dos espécimes coletados), seguida por Euglossa (Euglossa) truncata Rebèlo & Moure, 1996 (28%). O cineol foi a isca mais atrativa (66,5% dos machos e 13 espécies), seguido pelo eugenol (16% e 9 espécies) e vanilina (13,5% e 4 espécies). Eulaema (Apeulaema) marcii Nemésio, 2009 e Eufriesea auriceps (Friese, 1899) foram atraídas por todas as essèncias, enquanto as espécies de Euglossa foram coletadas somente em armadilhas contendo cineol ou eugenol. [ABSTRACT FROM AUTHOR]

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