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Bracypterous wasp - Eupelmus messene - female

Bracypterous wasp - Eupelmus messene - Female
YRSF, Allamakee County, Iowa, USA
September 6, 2012
Size: 3+ mm
Sweet net of a prairie opening with cedars surrounded by forest

Moved from Eupelmus.

This is a female E. (Eupelmus) vesicularis (Retzius) (Eupelmidae: Eupelminae). The species apparently was introduced from Europe on the earliest ships in straw. Both sexes occur in Europe but in North America it is parthenogenetic, i.e. reproduces asexually so there are only females. Makes it easy to be introduced. Females are not very particular in what they attack and this species has one of the largest host ranges known for a chalcidoid. Another characteristic that makes introductions easy. Females are also short-winged, but this specimen has shorter wings than normal. The apex of the fore wing seems to be missing, normally there is a right-angle bend with the apical part about the same length as the basal part that remains. The fold is a line of weakness along which the wings often break-off for some reason.

Thank you
for the detailed information.


Gary Gibson will know.

Green head
and bronze body.
Certainly has the body style of this:

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