Disholcaspis potosina n. sp.
Agamic form

Gall. Similar to that of D. perniciosa. Ellipsoidal or compressed cushion-shaped, without a nipple-like tip; color rich tan to ruddy brown, darkening to brownish black with age; the surface fairly rough, with a bit of puberulence on fresh galls, with some rough scurf on weathered galls; up to 8. num, in length and 5.mm. in height; occurring in fair-sized clusters of up to 20 galls continuously distributed along the young stems.

Host. Quercus potosina variety, the common scrub oak of the area,

Range. San Luis Potosi: Rio Verde, 14 W, 6500’. Cerritos, 25 W, 6000’. Probably restricted to a portion of the Eastern Sierra of Mexico including the eastern mountains of San Luis Potosi.