Synonyms and other taxonomic changes
classification here follows(1)
125 spp. in 11 genera in our area(2)
, almost 800 spp. in 18 genera worldwide(3)
; 21 spp. in Canada(4)
; 44 spp. in e. US(5)
, FL list
Overview of our fauna:
Abdomen long and stalked (petiolate), giving the body a "thread-waisted" appearance; middle tibiae with two apical spurs; body may be all black (sometimes tinged with metallic blue or green), black and red, yellow and black, or white and black.
Most species nest in the ground, usually in areas with sparse or no vegetation; some build aerial nests of mud; a few nest in hollow stems or abandoned bee burrows in logs
Larvae feed on paralyzed arthropods (the host varies according to wasp species) provided by adult; common hosts include spiders, grasshoppers, and caterpillars. Adults feed on nectar from flowers and extrafloral nectaries, honeydew, and body fluids of their prey.
most are solitary nesters; some species are kleptoparasitic, using prey caught by other wasps in order to provide it to their own larvae.