This species is responsible for the first new gall (Figs. 7–8) to appear in spring on Pycnanthemum tenuifolium. In late April in eastern West Virginia, galls can be found at the tips of plants that are less than 15 cm tall. A gall comprises one or two long, green, outer leaves and a short, thick, apically rounded inner pair
”- Raymond J. Gagne: (2018) The Gall Midges (Diptera: Cecidomyiidae) of Mountainmints, Pycnanthemum Spp. (Lamiaceae)©