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Genus Tachytes

Crabronid - Tachytes - male Wasp - Tachytes crassus - female Bicyrtes? - Tachytes crassus - male Beewolf - Tachytes distinctus - female W-9366 - Tachytes - male Green-eyed Wasp - Tachytes - male Tachytes? - Tachytes - male Tachytes? - Tachytes - male
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)
Tribe Larrini
Subtribe Gastrosericina
Genus Tachytes
Synonyms and other taxonomic changes
Tachytes Panzer 1806
Explanation of Names
The name of the genus derives from the Greek ταχύτης (tachytes), meaning swiftness or speed. (1)
34 spp. in our area(2), ~300 worldwide(3)
7-19 mm(4)
Antennae, black. Legs and wings, tawny color. Short, golden hairs on the thorax and head. Determining sex may be critical to identification.
Keying info to be found here:

Some species have very dark eyes:

Some species have males with slightly modified antennae segments:
Basal: ♂ Apical: ♂
Grasshoppers, katydids
Life Cycle
Nests in sand
See Also
Some other green-eyed wasps, e.g. Larra, look similar.
Many Tachysphex spp. also look similar, but are generally smaller, with a pointy abdomen, and no pygidial plate.
Internet References
DNA verified specimens (BOLDSYSTEMS website)
Hilltoping behavior: Alcock (2007)