Observations on the prey and nests of Podalonia occidentalis Murray (Hymenoptera: Sphecidae)

Evans, HE.

Pan-Pacific Entomologist 632: 130-134


ISSN/ISBN: 0031-0603
Accession: 001646139

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Evidence is presented for the predation of Podalonia occidentalis on the larvae of Malacosoma spp. (especially M. californicum) in North America, both from personal observations in Colorado and from records from New Mexico, Nevada, California and Alberta. The nest and its construction and provisioning with lasiocampid larvae by the sphecid are described. Unusually heavy parasitism (75%) of the nests by miltogramine flies was observed; larvae of Hilarella hilarella (the most abundant species), Sphenometopa sp., Taxigramma heteroneura and Senotainia trilineata consumed both the eggs and the prey of P. occidentalis.