Callirhytis gallaestriatae

Quercus coccinea, palustris, rubra
Bud galls
Spindle-shaped with a long stalked base, up to 31 mm long, in late summer from weak lateral buds dropping in Sept.

[Photo caption]
On Q rubra. Also on Q coccinea, velutina, palustris, texana [buckleyi]. A dead adult was found in cage June 9 the second spring.

Andricus gallaestriatae

Quercus texana [buckleyi], velutina
Bud galls
Spindle-shaped with a long stalked base, up to 31 mm long, in late summer from weak lateral buds.

Callirhytis gallaestriatae, new species

Host.--Quercus maxima [rubra], red oak

Gall.--The gall was described by Miss Stebbins in 1910 but she failed to rear the adult. The galls are spindle-shaped with a long tapering base, the largest measuring 31 mm. long by 4 mm in diameter, longitudinally ridged with from 9-12 rounded ridges. They are found in late summer sticking out at an angle of 45° on the twigs, produced from weak lateral buds toward the base of the current season's growth, greenish at first and often tinged with red, later turning brown and dropping to ground early in September.

Habitat. — The type material was collected at Ravinia, IL., September 15, 1917. Galls were opened at intervals and on September 2 and March 25, 1919, those opened contained full-grown larvae. On June 9, 1919, the dead adult was found in the last of the galls in the cage. Date of normal emergence unknown. These galls were also collected at Evanston, Fort Sheridan, and Glen Ellyn, IL. William Beutenmueller has collected them at New York City. There is a similar gall on Q. texana at Boerne, Tex.

Andricus? gallaestriatae, n.s.

Striate oak gall
A spindle-shaped gall developed from a very small bud near the base of last season's twig, projecting from the tip of the bud. Top blunt with inserted tip. Comparatively thick-walled, the one larval cell filling the space, with a mere suggestion of supporting fibers at either end. Stem longer than remainder of the gall. (Gall about 2 cm. long, 2 mm. wide. Green yellow with each of the 7-10 longitudinal ridges tinned with red. more strongly on one side of the gall than on the other. On scarlet oak, Quercus coccinea. September.