Dros viscidum

Quercus oblongifolia, toumeyi
Leaf galls
Detachable
Fig 178.

Liodora viscida, new species

Host.--Quercus oblongifolia

Gall (pl. 1, fig. 3). — A spangle-gall sessile on veins on underside of leaf late in fall, 2-4 mm. in diameter, fleshy, pinkish, covered with stellate hairs on its sticky surface, the edge inrolled, the larval cell basal and eccentric. One to four on a leaf.

Habitat. — Mrs. N. W. Capron collected galls containing white pupae on January 21, 1935, at Nogales, Ariz. Adults emerged on February 21, 22, and 27.

Andricus viscidus
Fuzzy-disc-gall wasp
[Page 187]

Hosts: Quercus turbinella

the disc galls of A viscidus differ in that they edges are rounded up, with stiff, light yellow bristles below the edge, and are not tightly appressed to the leaf surface.

The taxonomic position of the Dros species north of Mexico is discussed, concluding than at least two species belong to the genus Dros: D. sessile (Weld, 1927) and D. viscidum (Weld, 1944).

transferred to Andricus: viscidus (Weld), comb. nov.