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Family Myrmosidae - Myrmosid Wasps

Bee/Wasp? Myrmosa Myrmosid female - Myrmosa unicolor - female Myrmosidae, wingless wasp, dorsal - Myrmosa unicolor - female Myrmosidae, wingless wasp, thorax - Myrmosa unicolor - female small wasp velvet ant - Myrmosa - female Loomis-J.2022.01 - 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)
Superfamily Pompiloidea (Spider Wasps, Velvet Ants and allies)
Family Myrmosidae (Myrmosid Wasps)
Synonyms and other taxonomic changes
Used to be variously treated as a subfamily of the Mutillidae or Tiphiidae; now recognized as a family closely related to Mutillidae based on molecular data(1)
Explanation of Names
Myrmosidae Fox 1894
15 spp. in 3 genera in our area:(2), ~a dozen genera total
not yet in the guide: Leiomyrmosa (monotypic)
Females wingless, much smaller than males, with thorax divided in two distinct parts; males without a spine at the end of the abdomen.
Larvae are parasites of various bees and wasps
Works Cited
1.Molecular phylogenetics of Vespoidea indicate paraphyly of the superfamily...
Pilgrim E.M., von Dohlen C.D., Pitts J.P. 2008. Zoologica Scripta 37: 539–560.
2.Catalog of Hymenoptera in America North of Mexico
Karl V. Krombein, Paul D. Hurd, Jr., David R. Smith, and B. D. Burks. 1979. Smithsonian Institution Press.