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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » Aculeata - Bees, Ants, and other Stinging Wasps » Cuckoo Wasps and Allies (Chrysidoidea) » Dryinids (Dryinidae) » Crovettia » Crovettia theliae
Photo#113870
Big Head Wasp - Crovettia theliae - female
Copyright © 2007 Joe, Entomologist (in training)

Big Head Wasp - Crovettia theliae - Female
Ames, Story County, Iowa, USA
May 29, 2007
Size: 3mm or so
Found on my building. The thing that stood out to me was the large head. It was also a very cooperative subject; I've never seen anything with wings so reluctant to fly. Any ideas?

Images of this individual: tag all
Big Head Wasp - Crovettia theliae - female Big Head Wasp - Crovettia theliae - female
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Contributed by Joe, Entomologist (in training) on 30 May, 2007 - 1:06am
Last updated 14 June, 2008 - 4:59pm

Moved
Moved from Pteromalids.
… Keith Bayless, 12 March, 2008 - 12:19pm login or register to post comments

Moved
Moved from Ants, Bees, Wasps and Sawflies, according to Gerrard Pennards
… Keith Bayless, 16 January, 2008 - 1:52pm login or register to post comments

A female at any rate
Since males have much longer, unclubbed antennae. This cannot be a Trichogrammatid, nor any kind of Chacid Wasp: wing venation is different. Distinctly elbowed anatennae rule out Ichneumonoids and Cynipoids as well.
Too bad I can't have one of these tiny mysteries under a lens!
A VERY remote possibilty could be an extremely small Crabronid Wasp, from subfamily Pemphredoninae.
… Richard Vernier, 31 August, 2007 - 10:37am login or register to post comments

 
Dryinidae, Aphelopinae
The prominent head, reduced venation with the costal cell darkened, and the radial making a sharp angled turn (instead of gently curved), all point to Crovettia. The lack of reticulate sculpture on the head and thorax put it in Crovettia theliae
… Dennis Haines, 12 March, 2008 - 10:58am login or register to post comments

 
a vote for chalcide.
I thought that Chalcids had the costal vein absent basally and a stigma like this little critter. Don't they also have ebowed antennae with the first antennomere long.
… Kojun Kanda, 8 November, 2007 - 7:48pm login or register to post comments

maybe possibly kinda sorta mi
maybe possibly kinda sorta might be a Trichogrammatid wasp.. definitely a Hymenoptera though you obviously know that I figure I'd mention it for others. Cool looking critter in any case
… Will Chatfield-Taylor, 1 June, 2007 - 10:38pm login or register to post comments

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