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Nidificação e forrageamento de Centris (Ptilotopus) scopipes Friese (Hymenoptera, Apidae)

Nesting biology and foraging behavior of Centris (Ptilotopus) scopipes Friese (Hymenoptera, Apidae)

Resumo

Centris (Ptilotopus) are large bees and important pollinators in the Neotropical region. Its biology and behavior is still poorly known and only a few observations have been published. In this paper, observations on the biology of C. (Ptilotopus) scopipes Friese, 1899, a species that occurs in the "cerrados" of Brazil, are presented. The study was conducted in the Estação Ecológica de Jataí, in Luiz Antônio, São Paulo, during the active period of the adults (November through April). Females collected pollen from flowers of Solanaceae and Caesalpiniaceae, by vibration, and floral oils from Malpighiaceae belonging to the genera Byrsonima, Banisteriopsis, Stigmaphyllon and Peixotoa. Floral resources are carried in the hind leg scopae to the nests, which are excavated in the walls of epigeous nests of the termite Procornitermes araujoi Emerson, 1952 (Termitidae, Nasutitermitinae). The main tunnel entered the termite nest at an ascending angle ending in a vestibulum. Two parallel, vertical burrows forming linear series of cells descended from the vestibulum. The upper cell (the nearest to the nest entrance) was filled with soil. This might represent a protection against parasites. During the study, one female of Acanthopus excellens Schrottky, 1902 (Apidae, Ericrocidini), a cleptoparasitic bee, was captured when leaving one of the nests. A male of C. scopipes emerged eleven months after cell closure, suggesting a univoltine cycle for this species.

Centridini; cerrado; floral resources; Malpighiaceae; nests; phenology; termites


Centridini; cerrado; floral resources; Malpighiaceae; nests; phenology; termites

Nidificação e forrageamento de Centris (Ptilotopus) scopipes Friese (Hymenoptera, Apidae)

Nesting biology and foraging behavior of Centris (Ptilotopus) scopipes Friese (Hymenoptera, Apidae)

Maria Cristina Gaglianone

Pós-Graduação em Entomologia, Departamento de Biologia, FFCLRP, Universidade de São Paulo. Avenida dos Bandeirantes 3900, 14040-901 Ribeirão Preto, São Paulo, Brasil. E-mail: mcrisgag@usp.br

ABSTRACT

Centris (Ptilotopus) are large bees and important pollinators in the Neotropical region. Its biology and behavior is still poorly known and only a few observations have been published. In this paper, observations on the biology of C. (Ptilotopus) scopipes Friese, 1899, a species that occurs in the "cerrados" of Brazil, are presented. The study was conducted in the Estação Ecológica de Jataí, in Luiz Antônio, São Paulo, during the active period of the adults (November through April). Females collected pollen from flowers of Solanaceae and Caesalpiniaceae, by vibration, and floral oils from Malpighiaceae belonging to the genera Byrsonima, Banisteriopsis, Stigmaphyllon and Peixotoa. Floral resources are carried in the hind leg scopae to the nests, which are excavated in the walls of epigeous nests of the termite Procornitermes araujoi Emerson, 1952 (Termitidae, Nasutitermitinae). The main tunnel entered the termite nest at an ascending angle ending in a vestibulum. Two parallel, vertical burrows forming linear series of cells descended from the vestibulum. The upper cell (the nearest to the nest entrance) was filled with soil. This might represent a protection against parasites. During the study, one female of Acanthopus excellens Schrottky, 1902 (Apidae, Ericrocidini), a cleptoparasitic bee, was captured when leaving one of the nests. A male of C. scopipes emerged eleven months after cell closure, suggesting a univoltine cycle for this species.

Key words: Centridini, cerrado, floral resources, Malpighiaceae, nests, phenology, termites

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AGRADECIMENTOS. A João M.F. Camargo, pelas condições oferecidas no laboratório e acesso aos exemplares de

C. (Ptilotopus)

e

Acanthopus

da Coleção RPSP; Eliana M. Cancello, pela identificação de

Procornitermes;

Sr. Sebastião A. Oliveira e José M. Zanetti pelo auxílio no trabalho de campo; Antônio C. Zanatto pelo apoio logístico na Estação Ecológica Jataí; Fernando C.V. Zanella, pela leitura e sugestões ao manuscrito; Marcio L. Oliveira pelo auxílio no campo e sugestões; a dois revisores anônimos, pelas sugestões apresentadas. A autora é bolsista do CNPq (Doutorado).

Recebido em 13.VII.2000; aceito em 19.VI.2001.

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Datas de Publicação

  • Publicação nesta coleção
    30 Abr 2009
  • Data do Fascículo
    Jul 2001
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