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

Calendar
Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

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

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

Photos of 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


Previous events


TaxonomyBrowse
Info
ImagesLinksBooksData

Family Leucospidae

Chalcid Wasp - Leucospis affinis - male Leucospis affinis - female Leucospis - Leucospis affinis - female Leucospidae ID?  - Leucospis affinis - female Unknown - Leucospis affinis Leucospis affinis - female Leucopsis Wasp? - Leucospis affinis Chalcid Wasp - Leucospis affinis - female
Classification
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
Numbers
6 spp. in a single genus in our area, >130 spp. in 4 genera worldwide(1)
Size
4-17 mm
Identification
Usually black and yellow, though those from Florida and surrounding states are often black and red. They are stout insects and fold their wings longitudinally at rest and look a little like small yellowjackets or mason wasps. The ovipositor is long in most species (apart from L. robertsoni and L. texana) and is curved forward and upward over the abdomen. Like the chalcidids they have the hind femora greatly swollen and toothed on the ventral side.(2)
Food
parasitoids of aculeate Hymenoptera (mainly solitary bees, less frequently solitary wasps, e.g. Vespidae and Sphecidae)(1)
Life Cycle
Eggs are deposited externally on the host larva or nearby. The first instar larva does not feed at first but searches the host cell for competitors; only one parasitoid larva survives and develops as an ectoparasitoid sucking the body fluids of the host.(1)
Remarks
rather rare; may be found on flowers(3)
Internet References
Works Cited
1.Universal Chalcidoidea Database
2.A handbook of the families of Nearctic Chalcidoidea (Hymenoptera). 2nd Edition
Grissell E.E., Schauff M. E. 1997. Ent. Soc. Wash. 87pp.
3.Borror and DeLong's Introduction to the Study of Insects
Norman F. Johnson, Charles A. Triplehorn. 2004. Brooks Cole.