Needle-Gall Midge
Paradiplosis tumifex

This midge induces swollen, elliptical, green-beige galls near the base of needles of white fir, balsam fir, and Fraser's fir.

D. balsamicola. This species is an inquiline... The larvae of the inquiline and their needles drop to the duff a little later in the fall than those of P. tumifex...

Paradiplosis tumifex. This species is responsible for initiating the gall...

Host: Abies balsamea, Abies fraseri, Abies concolor (Adults have not been reared from larvae from A. concolor...)

Distr: Canadian Maritime Provinces to Wisconsin, south along Applachians to North Carolina, and California.