Disholcaspis purlans, n. sp.
Agamic form

Gall. — Basically but not closely similar to that of D. perniciosa. Swollen breast-shaped, the irregularly globose base terminating in a bluntly conical tip but not in a fine point; color tan or rosy brown, darkening with age; smooth and shining, entirely without scurf; up to 10. mm. in diameter and IL mm. high; occurring singly or in small, compact dusters of 2 to 4 galls.

Host. — A small tree of the Quercus reticulata complex. Range. — Hidalgo: Jacala, 7 NE, 5000'*. Jacala, 5 W, 5000’. — Probably restricted to a portion of the Eastern Sierra of Mexico in northern Hidalgo and in the immediately adjacent areas of other states.

Life History. — Adults: December 10. January 2, 16. Most of the emergence in the first half of December.

This insect occurs on one of the small trees of the Q, reticulata group of oaks in the northern end of the state of Hidalgo. In the same area, D. purpurea occurs on the low dwarf oaks; but purpurea has black on and between the anterior parallel lines and on the lateral lines, and it is not a very close relative of purlans, purlans is more closely related to D. laetae from the Eastern Sierra of San Luis Potosi. The galls of purlans and laetae are very similar.