Delia coarctata (Fallén,1825)
wheat bulb fly
cephalic skeleton (from Dušek)
Oviposition in the soil. The larvae bore in the culm of grasses; one larva can destroy several culms. Pupation and hibernation in the soil.
distribution within Europe
egg, larva, puparium
all stages are described and illustrated by Dušek.
Buhr (1964b, 1965a), Dušek (1969a), Wetzel, Skuhravý, Camprag, ao (1984a).