Cynips (bulboides) bulbulus, new species
agamic form

GALL-A bulboid gall, as described for the complex. Mature galls rosy or yellow brown, not as dark as in some other species, not noticeably puberulent except on younger galls, usually unspotted, but sometimes well marked with purple; up to 23. mm., averaging nearer 17. mm. in diameter. Figure 78.

HOST.-Quercus chihuahuensis. Not recovered from any of the sev eral other white oaks of the area.

RANGE.-Chihuahua: Madera, 10 SE (gall only). Namiquipa, 30 W, 5200'. Matachic, 3 N, 6700'. Pedernales, 2 E, 7500' (types). Probably restricted to the Western Sierra in a more southern portion of Chihuahua. Figure 75.

LIFE HISTORY.--Adults: February 1, 5, 12, 18.

This insect produces the most northern of the bulboid oak apples, the complex reaching its northern limit in the middle of the state of Chihuahua, still 165 miles south of the International Boundary. Bulbulus was not commonly represented in our col lections in Chihuahua, certainly being much rarer (at least in 1931) than the next more southern species, bulboides. The in sect is best distinguished from the other species of the complex by the better developed line of spots which lies in the cubital cell parallel to the second abscissa of the radius, by the more fully sculptured foveae, and by the distinctly darker coloration of the whole body

Atrusca bulbulus (Kinsey, 1936)

Figs 117–122

Synonymy
Cynips (bulboides) bulbulus Kinsey, 1936: 153, female, gall.
Atrusca bulbulus (Kinsey): Weld 1952: 313.

Types examined

HOLOTYPE female Cynips (bulboides) bulbulus “Pedernales 2E Chi 7500’, Mex. Gall 10.23.31, 4 fms. 2.5.32”, “Q. chihuahuens, Kinsey coll.”, red “Cynips bulbulus, Holo- Paratype”. HOLOTYPEs are deposited in AMNH, NYC, examined by GM.

Gall (Fig. 117)

A bulboid gall as described for other species of the complex. Mature galls rosy or yellow brown, not noticeably puberulent except on younger galls, usually unspotted but sometimes well marked with purple, up to 23 mm, in average 17 mm in diameter.

Biology

The asexual generation is only known to induce leaf galls on Q. chihuahuensis.

Distribution

Mexico: Chihuahua