Celticecis pilosa Gagne, new species

Hosts: Celtis occidentalis

Gall.--On leaf lamina on underside of leaf, usually in groups; uprightconical, apex pointed, base circular, not flared; surface covered with white hair nearly obscuring green surface; 3.5–4.5 mm high and 2.0–3.0 mm wide at base; connection to leaf circular, flat, ca. 1/3 width of gall base; apparent on opposite side of leaf as slight, sometimes discolored convexity; gall in cross section thickest near base surrounding larval chamber, thinning and less woody and more brittle apically.

Distr.-- This species was the most rarely collected species of Celticecis. It was found only on northern hackberry.

KY