Cecidomyia impatientis

Gall. Baron Osten Sacken described only the gall of this species, as a succulent swelling at the base of the flower of Impatiens fulva [capensis] in September. Walsh and Riley described the gall and larva in detail, with figures of the gall and breast bone of the larva. They also give Impatiens fulva [capensis] as the host plant. I have taken the gall at Pine Hill, Catskill Mountains, NY, and in the valley of the Black Mountains, NC, in September, on Impatiens pallida. The gall is very succulent and soon decays after the larvae have escaped from it.

One male reared 25 June 1993 from overwintering larva. Gall on Impatiens capensis Meerb.

Globular, pendant flower bud gall...Schizomyia impatientis (Osten Sacken)

Galls are succulent and 10–15 mm in diameter. The active, red larvae leave the galls in late summer or early fall and drop to the ground to overwinter...Hosts: I. capensis, I. pallida...