Zapatella oblata (Weld) comb. n.

Callirhytis oblata Weld, 1952.

Only the asexual generation is known. It induces bud galls on Quercus coccinea Muench. and Quercus falcata in Virginia, USA (Weld 1952).

Callirhytis oblata

Quercus coccinea, falcata
Bud galls
Green, smooth, bare, at apex of new growth in May, 4-5 by 3.5 mm, not at all hidden by bud scales. When detached without a girdle of hairs at the base.

[Photo caption]
Q coccinea, falcata. Galls drop about May 15, bare at base. Adults the next spring Mar 21, Apr 6 (DC).

292. Green, smooth, bare, not hidden by bud scales, at apex of new growth of Q coccinea and falcata in May. Without a girdle of hairs at base when detached.

Callirhytis oblata, new species

Hosts. — Quercus coccinea and Quercus falcata., Spanish oak.

Gall (pi. 16, fig. 7) . — A green, smooth, bare bud gall at apex of new growth in May, dropping to ground when mature. An oblate sphaeroid, 4-5 mm. in diameter by 2.5 mm. high, red in center above but without a nipple, not at all hidden by bud scales; when detached without a girdle of hairs at base.

Habitat. — The type is selected from a series that emerged March 21, 1946, from galls collected on Spanish oak at Dyke, 3 miles south of Alexandria, Va., on April 19, 1945. Paratypes are from galls on scarlet oak collected near Vienna, Va., and at East Falls Church, Va.