On Cunila origanoides (L) Britt. (Dittany), bud gall, on ends of aborted upper branches; prosoplasma, up-walled type; sub-spherical, tipped with short point, 2–3.5 mm. diam., green at first early becoming bluish-purple, surface glandular same as leaves, sessile on branch end, invested below by an involucre of a few inconspicuous, foliaceous bracts; chamber large, same shape as gall, wall thin, similar to leaf in texture though slightly thicker than leaf; few on any one plant.

Galls are 2–4 mm in diameter, green at first, becoming bluish-purple. The branch tips are killed. Host: C. origanoides...