Asteromyia tumifica
# Asteromyia tumifica

Asteromyia tumifica is a species of gall midges in the family Cecidomyiidae. This fly causes blister galls on green stems at the base of goldenrod stems. It has a fungal symbiont responseible for forming a black, hard cast around full-grown larvae. The fungi are trasported by the female midges in the ovipositor and spores are trnsferred at the time of egg insertion into the stem.

