Disholcaspis pulla, n. sp.
Agamic form

Gall. — Basically but not closely similar to that of D. perniciosa. Pointed breast-shaped, the swollen, globose base terminating in a conical tip, with a fairly fine point; color tan brown, weathering darker brown: with a heavy tan scurf (as heavy as in the D. cinerosa complex); up to 7.5 mm. in diameter and 9.0 mm. high; occurring in dense, elongate clusters of up to 20 galls, spreading for 40, or 50. mm. along the young twigs.

Host, — A tree form of Quercus breviloba [sinuata breviloba].

Range. — Nuevo Leon: Monterrey, 28 SE, 1300’. — Tamaulipas: Villagran, 5 S, 1000k — Probably confined to the single oak in the northeastern corner of Mexico, at low elevations east of the Eastern Sierra.

Life History. — Adults: November 29. December 6. 7, 14. The bulk of the emergence late in November.

This species in common on the big oak of the Q. breviloba complex which occurs at places along the Laredo-Mexico City highway between Monterrey and Ciudad Victoria. This puts it 150 miles south of the Rio Grande. There is no direct connection with eastern Texas but, there is a more round-about connection with Central Texas, and a fairly direct connection through Coahuila with the mountains of the Big Bend of Texas. Also in Coahuila, eastern and Western Sierras meet; and it is, in consequence not surprising to find the present species of cynipid a close relative of the Rocky Mountain D. perniciosa and of the other Rocky Mountain and Western Sierran species of the complex. The species is not so closely related to any of the other members of the complex described in the present paper.