Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Genus Ectemnius

Small bee - Ectemnius Ectemnius continuus Scaeva possibly  - Ectemnius Wasp IMG_3384 - Ectemnius continuus Square-headed Wasp? - Ectemnius maculosus Square-headed Wasp - Ectemnius maculosus Ectemnius sp? - Ectemnius scaber bee - Ectemnius
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)
No Taxon (Apoid Wasps (Apoidea)- traditional Sphecidae)
Family Crabronidae
Subfamily Crabroninae (Square-headed Wasps)
Tribe Crabronini
Subtribe Crabronina (Squareheads)
Genus Ectemnius
Explanation of Names
Ectemnius Dahlbom 1845
27 spp. in our area(1), >180 total(2)
key to spp. in(3)
Life Cycle
most nest in dead/rotten wood (logs, stumps) or hollow stems and stock the nests with adult flies (Grissel 2007)
Most nest in twigs or in borings in dead wood (comment by Matthias Buck)
See Also
Lestica is very similar but has a sharply impressed longitudinal groove along each inner eye margin (Matthias Buck)
Internet References
Curated images of 12 Ectemnius species from the Spencer Entomological Collection of the University of British Columbia.