Cynips (plumbea) munda, new species
agamic form

GALL.-Indistinguishable from that of C. (plumbea) jalisco. Also in distinguishable from galls of C. (arida) eluta which occur in parts of the same area. Of moderate size or small, either with a flattened base (when occurring singly) or drawn out to a conical tip (when occurring in clusters); dull; very prominently shriveling; bluish gray with a more or less persistent scurf, the older gall rose or purplish brown in color; up to 7.5 mm., averaging below 5.0 mm. in diameter. Figure 111.

HOSTS.—Quercus potosina and Q. jaralensis, related scrub oaks, and probably on other species of the same complex.

RANGE.-Zacatecas: Zacatecas, 22 SW (Q. potosima, galls). Aguascalientes: Pabellón, 20 W, 7000' (Q. potosina ; types). Jalisco: Aguascalientes, 35 E, 7000' (Q. potosima). Guanajuato: San Felipe, 20 SW, 8000' (Q. Jaralensis). León, 20 NE, 9000' (Q. Jaralensis).

Probably restricted to oaks of the potosina complex wherever they occur, in an area in the Western Sierra of Mexico, from Zacatecas through Jalisco and Guanajuato. Figure 102.

LIFE HISTORY..—Adults: February 20. March 2. April 15.

Cynips munda occurs in much the same area as C. (plumbea) jalisco, from which species it is isolated by occurring on the very distinct potosina group of oaks. The galls of the two are identical. The insects are close, but munda is distinctly smaller. It has rather finer wing veins, and a cubital cell which is less heavily marked. The galls of munda are also indistinguishable from the galls of C. (arida) eluta which occur in the same region and on the same oaks occupied by munda. The insects must, therefore, be seen before determinations can be made.