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For Insects, Spiders & Their Kin
For the United States & Canada
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Species Leucospis affinis

Wasp - Leucospis affinis - female Leucospis affinis - female Leucospis affinis flitting around the tomato[e] garden. - Leucospis affinis - female Chalcid Wasp? - Leucospis affinis - female Chalcid wasp - Leucospis affinis - female Leucospis affinis? - Leucospis affinis - female Perhaps yet another Bee Wolf? - Leucospis affinis Leucospis affinis affinis - Leucospis affinis - male
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Parasitica" - Parasitoid Wasps)
Superfamily Chalcidoidea (Chalcidoid Wasps)
Family Leucospidae
Genus Leucospis
Species affinis (Leucospis affinis)
Explanation of Names
Leucospis affinis Say, 1824
2 sspp. in our area(1)
1. L. a. affinis (widespread)
2. L. a. floridana (FL, primarily southern)
Hind femur less stout and with a broad basal tooth and at least 7 smaller teeth; ovipositor very long and reaching the mesosoma.(2)

L. a. affinis - body with yellow markings (widespread)

      Californian variant - mesoscutum often with a pair of stripes, abdomen more extensively yellow (CA)

L. a. floridana - body with red markings (s. FL)
Hosts: various Megachilidae(3)
One of the largest chalcidoids in the US, and the only one exhibiting wing-folding as part of its mimetic morphology.
Print References
Graenicher S. (1905) On the habits and life-history of Leucospis affinis (Say): A parasite of bees. Bull. Wisc. Nat. Hist. Soc. 3-4: 153-159 (Full text)

Say, Thomas. 1824. Narrative of an expedition to the source of St. Peter's river, Lake Winnepeek, Lake of the Woods. H. C. Carey & I. Lea, Philadelphia. Vol. v.2: App., Zool.: 253-378; pls.14-15. (Original Description)
Works Cited
1.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.
2.The New World species of Leucospis Fabricius, 1775: an update of Bouček’s revision w/ description of two new species from Bra
Alessandro Rodrigues Lima & Priscila Guimaeães Dias. 2018. Zootaxa 4441 (1): 001–045.
3.Universal Chalcidoidea Database