Notes on the biology of Trypoxylon (Trypargilum) opacum Brèthes (Hymenoptera; Crabronidae) in Southern Brazil

Brazilian Journal of Biology

M. L. T. Buschini¹  L. L. Wolff¹ 

[1] ,UNICENTRO Depto de Biologia Guarapuava PR ,Brazil

关键词: Crabronidae;    Trypoxylon;    biology;    Hymenoptera;    Crabronidae;    Trypoxylon;    biologia;    Hymenoptera;   

DOI  :  10.1590/S1519-69842006000500017

来源: SciELO

【 摘 要 】

The present study investigated the abundance, seasonality and various life-history traits of Trypoxylon (Trypargilum) opacum. Using trap-nests, 320 nests of T. opacum were collected in the Parque Municipal das Araucárias in Southern Brazil (25° 23' 36" S and 51° 27' 19" W) over a 3 year period. Nesting was more frequent during the warm season. Nests consisted of a linear series of 1 to 8 brood cells separated by mud partitions, usually followed by an empty vestibular cell and final-closure mud plug. Brood cells were most commonly provisioned with spiders of the family Araneidae. Sex-ratio was strongly female biased, 3.4:1 females:males. Natural enemies attacking nests T. opacum included chrysidids, ichneumonids, sarcophagids, bombyliids and ants.

【 授权许可】

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