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Subfamily Crabroninae - Square-headed Wasps

Square-headed Wasp - Tachytes - female Which bee made its appearance at the Diadasis nesting site? (Turns out, it's a wasp.) - Solierella Green-eyed Wasp on Snow-on-the-Mountain - Tachytes distinctus - female small, big-headed wasp - female Maybe Ectemnius stirpicola? - Ectemnius 8035073 crabronid - Ectemnius Square-headed Wasp - Tachytes guatemalensis - male Braconid - Tachytes - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
No Taxon (Apoid Wasps (Apoidea)- traditional Sphecidae)
Family Crabronidae
Subfamily Crabroninae (Square-headed Wasps)
Numbers
~520 spp. in 31 genera of 6 tribes in our area(1), ~4,660 spp. in >100 genera of 7 tribes worldwide(2)
Size
body 6-20 mm
Identification
Large and quadrate head, with the inner margins of the eyes straight and converging ventrally. Forewing has only one submarginal cell.
Habitat
Adults commonly found on flowers
Remarks
Some nest in hollow stems or in abandoned galleries in wood, others burrow in the ground. Prey is mostly flies, but some utilize other insects.