%0 Journal Article
%T Notes on the biology of Trypoxylon (Trypargilum) opacum Br¨¨thes (Hymenoptera; Crabronidae) in Southern Brazil
%A Buschini
%A M. L. T.
%A Wolff
%A L. L.
%J Brazilian Journal of Biology
%D 2006
%I Scientific Electronic Library Online
%R 10.1590/S1519-69842006000500017
%X 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 arauc¨¢rias in southern brazil (25¡ã 23' 36" s and 51¡ã 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.
%K crabronidae
%K trypoxylon
%K biology
%K hymenoptera.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1519-69842006000500017&lng=en&nrm=iso&tlng=en