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- Title
NOTES ON THE BIOLOGY OF Trypoxylon (Trypargilum) opacum BRÈTHES (HYMENOPTERA; CRABRONIDAE) IN SOUTHERN BRASIL.
- Authors
Buschini, M. L. T.; Wolff, L. L.
- Abstract
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 (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.
- Subjects
BRAZIL; TRYPOXYLON; HYMENOPTERA; CHRYSIDIDAE; ICHNEUMONIDAE
- Publication
Brazilian Journal of Biology, 2006, Vol 66, Issue 3, p907
- ISSN
1519-6984
- Publication type
Article
- DOI
10.1590/S1519-69842006000500017