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Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.18 no.3 Curitiba Sept. 2001 

Biologia e ecologia de Anthodioctes moratoi Urban (Hymenoptera, Megachilidae, Anthidiini) em matas contínuas e fragmentos na Amazônia Central, Brasil


Biology and ecology of Anthodioctes moratoi Urban (Hymenoptera, Megachilidae, Anthidiini) in continuous forests and forest fragments in Central Amazonia, Brazil



Elder Ferreira Morato

Departamento de Ciências da Natureza, Universidade Federal do Acre. 69915-900 Rio Branco, Acre, Brasil




Anthodioctes moratoi Urban, 1999 was described based on specimens collected in tlhe state of Amazonas during a study of the ecology of trap-nesting bees and wasps. Sampling was done between 1988 and 1990 north of Manaus, in areas of the "Forest Fragment Biological Dynamics Project". Wooden trap-nests were set in different heights inside continuous forests, forest fragments of different sizes, natural gaps inside continuous forest, and in cleared areas between forest fragments. A total of 61 nests were collected from which 33 males and 46 females emerged. The majority of nests was collected in continuous forests, at 15 m height, in holes 4.8 mm in diameter. No nest was collected in cleared areas. There was no correlation, neither between number of nests and monthly precipitation, nor between the monthly number of nests constructed in the two consecutive years. No nest was constructed between January and June 1989. Overall, this coincided with the period of least activity of other trap-nesting bees in the studied areas. The nests consisted of a linear series of brood cells with walls made of resinous material mixed with small wood chips. The average length of the provisioned cell was 13,4 mm. Half of this length was occupied by a pollen mass. The number of provisioned cells varied between two and nine. In 52% of the nests there was brood mortality in at least one cell. The phorid fly Phalacrotophora (Omapanta) sp. was the only nest associate, emerged, from just one cell.

Key words: Anthidiini, Anthodioctes moratoi, Amazonia, bee biology, trap-nests



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AGRADECIMENTOS. À Dra. Danúncia Urban (Universidade Federal do Paraná)pela identificação das abelhas. Ao Dr. Forbes Peter Benton (então do Museu de Zoologia da Universidade de São Paulo) pela identificação do exemplar de Phalacrotophora sp. Este estudo foi parcialmente financiado pelo Instituto Nacional de Pesquisas da Amazônia (INPA) e pelo Smithsonian Tropical Research Institution (STRI) e representa a publicação número 354 da série técnica do projeto Dinâmica Biológica de Fragmentos Florestais.



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Recebido em 21.IX.2000; aceito em 18.VII.2001.

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