Caryomyia glebosa Gagne, new species

Hosts: Carya ovata, tomentosa, glabra

Gall (Figs. 130-131): Rare but widespread, on Eucarya hickories; on lower leaf surface on vein; 3.0-3.2 mm in height, conical, hairless, brown to blood-red, bumpy, the bumps sometimes yellow; base with narrow, circular, shallow, central excavation; larval chamber basal, ovoid, lined with yellowish pellicle, remainder of gall tissue large-celled, blood-red, viscous, traversed between larval chamber and apex of gall by bundle of long fibers. The gall of this species is the only soft, conical Caryomyia gall that is hairless and covered with bumps.

Affinities. — Galls of this species resemble somewhat those of C. turbanella because of the conical shape and at least partly bumpy surface. Larvae of the two species are similar, but adults of C. glebosa are not yet known.

Range: AR, CT, IL, MD, MO, NC, TN, WV