Andricus capillatus

Quercus alba, prinus [montana]
Leaf galls, detachable
Midrib cluster of 2 to 12, each about 2 mm, pale yellow, not so hairy as to hide the outline, on the under side on lower leaves of strong sprouts from stumps in the fall.

[Photo caption]
On Q alba. Also on Q prinus [montana]. Adults emerged Jan 22 the second spring.

Diplolepis capillata, new species

Host.--Quercus alba

Gall.--Cluster of 2-12 on midrib on under side of leaf in fall, usually on the lower leaves of strong stumps from sprouts. The individual galls are whitish or tan-colored, somewhat globular, 2-3 mm in diameter, but slightly distorted by mutual pressure, covered with sparse short pubescence which does not hide the outline of the gall.

Habitat.--The type material was collected at Fort Sheridan, IL., October 3, 1914. Nothing emerged before September, 1915, but when the breeding cage was next examined on November 2, 1915, six dead adults were found in the cage and a gall contained a full-grown larva, and a larva was found when another gall was opened June 2, 1916. The galls were also seen at Highland Park, IL. ; Kimmswick, Ironton, and Poplar Bluff, Mo. ; Hot Springs and Texarkana, Ark. ; Bluemont, Va., and Washington, D. C. A similar gall without the long scattered hairs was observed on Q. montana at Washington and Bluemont. Galls collected at East Falls Church, Va., in October, 1923, gave adults December 12, 1924.