Callirhytis pedunculata

Quercus coccinea, rubra
Leaf galls, integral
Spindle-shaped but small, with an inner free-rolling cell, the prolongation of a vein.

[Photo caption]

180. On Q rubra. Also Fig 190 on Q velutina. Adults emerged May 26-June 5 (CT); June 5 (IL).

181. On Q velutina. Also on Q coccinea. Adults emerged May 26-June 5 (CT); June 5 (IL). See also Fig 180.

Diplolepis pedunculata

The galls of this species were collected on Quercus coccinea at Winnetka, Glencoe, Ravinia, Fort Sheridan, and Waukegan, IL., and on Q. maxima at Rosslyn, Va., where they seemed to be full grown by May 16. Crosby collected them at East Hampton, Long Island. The writer reared adults from Winnetka galls on June 24.

Dryophanta pedunculata n.sp.

Galls growing on slender peduncles on the edge of the leaves of Q. rubra and Q. coccinea. The peduncles are from one-fourth to one-half an inch in length and are plainly the prolongation of lateral leaf veins. They are usually flattened, and in some cases bordered on one side for nearly the whole length with a very narrow extension of the leaf blade itself. When dry they are often twisted like the stems of the moss Funaria hygrometrica. The gall is ovate, with a long, curved point. It measures one-eighth by three-sixteenths of an inch exclusive of the tip. When fresh it is smooth, and has a somewhat glaucus hue, which mostly disappears in drying, changing to a dark, dirty olive-brown. It is extremely thin, and is hollow, except the free, smooth, oval larval cell. This cell is .05 by .10 of an inch, and is extremely fragile.

This gall differs from Andrlcus capsula Bass, in size, being much larger, and in shape the latter being as long, but only half as thick, and also in color, which in either species is constant. But the free larval cell in D. pedunculata, and its entire absence in A. capsula is the most striking difference.