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

Fall Fund Drive


Family Stephanidae - Stephanid Wasps

Crown-of-thorns Wasp - Megischus bicolor - female Megischus californicus - female Megischus californicus - male Stephanid Wasp - Megischus bicolor - male Crown-of-thorns wasp - Megischus bicolor - male Megischus bicolor? - Megischus bicolor - female Unknown parasitic wasp - Megischus bicolor - male Stephanid - Megischus - male
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Parasitica" (parasitic Apocrita))
Superfamily Stephanoidea
Family Stephanidae (Stephanid Wasps)
Explanation of Names
Stephanidae Leach 1815
from Greek stephanos 'crown' (refers to pointy tubercles on the head)
6 spp. in 2 genera in our area(1), >340 spp. in 11 genera worldwide(2)
5-19 mm
Slender antennae, 30 or more segments. Head has crown of teeth around median ocellus. Long ovipositor. Most associated with pines, seldom seen.
In NA, mostly western and southern(1); only two spp. (both in Megischus) are found in the east
hosts: wood boring beetles and wasps(1)
Works Cited
1.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
2.Order Hymenoptera. In: Zhang Z-Q (ed) Animal biodiversity: An outline of higher-level classif. and survey of taxonomic richness
Aguiar AP, Deans AR, Engel MS, Forshage M, Huber JT, Jennings JT, Johnson NF, Lelej AS, Longino JT, Lohrmann V, Mikó I, Ohl M. 2013. Zootaxa 3703: 51–62.