Carnus
Biology:
The larvae develop in various kinds of bird's nests, adults loose their wings and live hemiparasitic on the nestlings.
Diagnostic description:
Wings usually broken off, leaving a short stub; if wing complete, crossvein dm-cu absent. Female with abdominal sternites 1-5 absent; membrane with numerous setiferous sclerotized spots.
Distribution:
Mainly Nearctic Region, but occurs also in the Palaearctic and Oriental Regions.