Kinsey: The Genus Neuroterus . 43 
tionship to the males of Dolichostrophus. A rather similar 
gall, N, howertoni, occurs on the same leaves with alimas, but 
howertoni galls have a hollow, cone-shaped eruption on the 
under surfaces of the leaves; the insects of the two are less 
distinct than their galls. 
Neuroterus niger variety arizonicse, new variety 
agamic form 
FEMALE. — Color generally piceous black to black; the antennae 
brownish yellow to brown basally; the areolet moderately small; length 
about 0.8 mm., more robust than engelmanni. 
GALL. — Rather circular, slightly elongate, with only an indefinite 
trace of a point on the upper surface; the boundaries very indefinite, 
especially on the under surface; on Quercus arizonica. 
RANGE. — Arizona: Bisbee, Fort Huachuca, Whetstone, Salford, 
Globe, Santa Catalina Mountains (Sabino Trail). New Mexico; Ala- 
mogordo. Probably thru Arizona, New Mexico, and adjacent Mexico, 
wherever Q. arizonica occurs. 
TYPES. — 7 females; 3 pins of galls. Holotype female, para- 
type female, and galls at The American Museum of Natural His- 
tory; paratype females and galls in the Kinsey collection; paratype 
female at the U.S. National Museum. Labelled Bisbee, Arizona; Jan- 
uary 15, 1920; Q. arizonica; Kinsey collector. 
The insects probably do not emerge until late in January 
or February. I have galls but no insects from Alamogordo, 
New Mexico. 
Neuroterus niger variety engelmanni Kinsey 
agamic form 
Neuroterus engelmanni Kinsey, 1922, Bull. Amer. Mus. Nat. Hist., XLVI, 
p. 293, pi. XXIV, fig. 4. McCracken and Egbert, 1922, Stanf. 
Univ. Pubk, III (1), p. 11. 
FEMALE. — Color generally black; the legs and antennae brownish 
piceous, the antennae dull straw color basally; areolet rather small; 
length 0.7-1. 2 mm., averaging slender and smaller. 
GALL. — About circular, with rather well-defined boundaries, often 
with an indefinite central point on the upper surface. On Quercus 
Engelmannii (fig. 39). 
RANGE. — California; Alpine, Fallbrook. Probably confined to the 
limited range of Quercus Engelmannii, in Southern California and ad- 
jacent Mexico. 
TYPES. — 11 females and a great many galls. Holotype female, 
paratype females, and galls in The American Museum of Natural His- 
tory; paratype females and galls at Stanford University and in the 
Kinsey collection; paratype galls in the U.S. National Museum, the 
