Asteromyia tumifica is a species of gall midges in the family Cecidomyiidae.

[1][2][3][4] This fly causes blister galls on green stems at the base of goldenrod stems.

It has a fungal symbiont responsible for forming a black, hard cast around full-grown larvae.

The fungi are transported by the female midges in the ovipositor and spores are transferred at the time of egg insertion into the stem.

This article related to members of the fly infraorder Bibionomorpha is a stub.