Andricus pilularis, new species

Host: Quercus turbinella

Gall. — Similar to galls of Andricus utriculus Ashmead and A. pilula Bassett. Globular, about 4 mm. in diameter, projecting more on upper side of leaf.

Habitat. — The types are from galls collected at Wolf Creek, near Prescott, Ariz., by Mrs. N. W. Capron, in June and July 1935. Living adults were cut out of the galls on July 20 and August 15. Others were sent August 1, 1947, and adults cut out August 7. One paratype is from a gall on Quercus oblongifolia, from Nogales. Galls have been noted on Q. toumeyi., Q. submollis [gambelii], Q. gambelii, and Q. diversicolor [rugosa].

Andricus pilularis

Quercus arizonica, oblongifolia, toumeyi, reticulata [rugosa], gambelii, subturbinella [turbinella]
Leaf galls
Integral
Fig 103.

Andricus pilularis
Pinched-edge-gall wasp

Hosts: Quercus arizonica, oblongifolia, toumeyi, gambelii, rugosa, turbinella

Galls measure 4 mm in diameter and occur at the end of a lateral vein, which causes the leaf edge to indent noticeably.