Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Previous events


Genus Tachypompilus

Red Wasp w blue wings - Tachypompilus ferrugineus Tachypompilus unicolor wasp - Tachypompilus unicolor - female Red and Blue Wasp - Tachypompilus ferrugineus Tachypompilus ferrugineus  ? with Rabidosa rabida prey - Tachypompilus ferrugineus Tachypompilus unicolor - female Tachypompilus? - Tachypompilus unicolor - female wasp - Tachypompilus ferrugineus - female Blue metallic and red bug pulling a dead spider - Tachypompilus ferrugineus - female
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)
Superfamily Pompiloidea (Spider Wasps, Velvet Ants and allies)
Family Pompilidae (Spider Wasps)
Subfamily Pompilinae
Tribe Pompilini
Genus Tachypompilus
Other Common Names
Red spider wasps (note: also applies to several members of Ageniella and Priocnessus)
Synonyms and other taxonomic changes
Tachypompilus Ashmead, 1902
2 spp. in our area (T. ferrugineus and T. unicolor).
12-25 mm; females>males.
This genus belongs to the subfamily Pompilinae, tribe Pompilini and is identified by the following characters:
Spines at apex of hind tibia of unequal length and spacing.
Hind tibia always smooth in nearctic species.
Dorsal side of hind femur with at least a few spine pits.
Pocket in the basioposterior corner of the third discal cell.
Labrum at least partially concealed.
Females of this genus possess a tarsal comb.

This genus is characterized by the following:
Anal vein of posterior wing meeting the media at or before the origin of the cubitus.
Front with a blunt tubercle between the antennal orbits.
Pronotum with a median impression.
Integument mostly ferruginous with some black (except one all black subspecies of T. ferrugineus.
Transcontinental. T. unicolor is restricted to the western states.
Varied, but they are usually found in open habitats.
In the northern states mainly June through September, probably longer in the south.
Adults are often found taking nectar from flowers (Daucus, Pastinaca, and Eryngium). Females provision nests mainly with Lycosids.
Life Cycle
Females are fossorial or partly fossorial. They will often construct a cell within a rock pile or near the foundation of an old building. In much of the country there is one generation per year, possibly two in the south.
See Also
The only other group of pompiline marked with this much ferruginous is Poecilopompilus.
Print References
Evans, H.E. 1950. A taxonomic study of the nearctic spider wasps belonging to the tribe pompilini, Part I. Trans. Amer. Entomol. Soc., 75: 133-270.
Krombein, K.V. 1979. Pompilidae, pp. 1523-1571. In Krombein, K.V., P.D. Hurd, Jr., D.R. Smith, and B.D. Burks, eds. Catalog of Hymenoptera in America North of Mexico. Vol. 2 Apocrita (Aculeata). Smithsonian Inst. Press, Washington, D.C.