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

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


Superfamily Chalcidoidea - Chalcidoid Wasps

tiny wasp - Cheiloneurus Mello Yello Wasp....Revisited - Conura 6007977 - Brasema Small Chalcid - Brachymeria flavipes wasp - Halticoptera Scelionidae? Neochrysocharis arizonensis Pteromalidae
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)
Synonyms and other taxonomic changes
for changes suggested based on a recent phylogenetic analysis see(1)
Explanation of Names
"Chalcid" is usually used to refer to any member of this superfamily, rather than only members of the family Chalcididae. Using "chalcidoid" instead removes any ambiguity.
"chalcid" [KAL-sid] (not chalcidid) is the correct way to refer to a member of the group; "chalcidian" is a synonym of "chalcid" (Webster's Unabridged Dictionary 1983)
>2000 spp. in ~470 genera of 18 families in our area; estimated >500,000 spp. worldwide, of which a mere 22,000 so far described; 19 families with >90 subfamilies currently recognized(2)(3)
0.1-20 mm, avg. 1.5 mm, usually under 3 mm(2)(3)
key to families in(4)(5)
If wings present and developed, fore wing with 2 or fewer cells enclosed by tubular veins; venation reduced or absent, without a tubular vein (C absent) on basal part of anterior margin (a vein may occur on apical half of anterior margin); sometimes fore wing with no venation at all. Mymaridae have the head with dark H-shaped mark between eyes, ocelli, and antennal bases, which are usually closer to eyes than to one another, and the hind wing stalked basally. Most other winged Chalcidoidea do not have these traits. Pronotum in lateral view usually separated from tegula by an additional sclerite known as the prepectus. Body often with metallic color, or antenna with at least 1 minute, ring-like flagellomere just after pedicel, or both.
If wings reduced or absent, male Agaonidae distinct in that they are found exclusively inside figs (fruit of Ficus), the antenna are shorter than head, and the metasoma is often long, weakly sclerotized, and pale; pronotum in lateral view not extending to tegula; integument usually thin, especially dorsal part of metasoma; body almost always collapsed in air-dried specimens (5).
most parasitize eggs or immature stages of other insects or arachnids; others feed on plant tissues of stems, leaves, seeds, or flowers, or make galls(2)
Life history summarized in(3)(4)
Some are used to control insect pests (Lepidoptera, Diptera, Coleoptera, Hemiptera). The males of many species produce sounds.
Internet References
Illustrated guide [in Catalan]
Works Cited
1.A phylogenetic analysis of the megadiverse Chalcidoidea (Hymenoptera)
Heraty J.M., Burks R.A., Cruaud A., Gibson G.A.P., Liljeblad J., Munro J., Rasplus J.-Y., Delvare G., Janšta P., Gumovsky A.... 2013. Cladistics 29: 466–542.
2.The families and subfamilies of Canadian Chalcidoid wasps
Yoshimoto C.M. 1984. The insects and arachnids of Canada, Pt. 12. Ottawa: Agric. Canada. 149 pp.
3.Universal Chalcidoidea Database
4.A handbook of the families of Nearctic Chalcidoidea (Hymenoptera). 2nd Edition
Grissell E.E., Schauff M. E. 1997. Ent. Soc. Wash. 87pp.
5.Hymenoptera of the world: an identification guide to families
Goulet H., Huber J., eds. 1993. Agriculture Canada Publication 1894/E. 668 pp.