Kinsey: The Genus Neuroterus 
109 
pacificus synonyms, and those authors, confusing the two in- 
sects, intimate that Q. Douglctsii and Q. lobata are the hosts 
of fragilis. Of course neither Douglasii nor lobata occur 
within nearly a hundred miles of the type locality of fragilis. 
Dumosa and Engelmannii are the only white oaks near San 
Diego, and since dumosa is the only small oak in accord v/ith 
Bassett's description, this would appear to be the host of 
this variety. I have never seen the same variety of a cynipid 
on Q. lobata in Central California and on Q. dumosa in south- 
ern California, and there is hardly a chance that fragilis and 
pacificus are not distinct. 
Neuroterus quercicola variety pacificus 
bisexual form pacificus Beutenmuller 
Neuroterus quercus-batatus Fullaway, 1911 (not Fitch, 1859; not the 
woody stem gall) , Ann. Ent. Soc. Amer., IV, p. 334. 
Neuroterus pacificus Beutenmuller, 1918 (not the woody gall). Bull. 
Brooklyn Ent. Soc., XIII, p. 119. Kinsey, 1922, Bull. Amer. Mus. 
Nat. Hist., XLVI, p. 293. 
Neuroterus fragilis McCracken and Egbert, 1922 (in large part), Stanf. 
Univ. Publ., Ill (1), p. 10. 
FEMALE. — Basal segments of the antennae very light yellow; the 
thorax and abdomen wrinkling somewhat upon drying, the abdomen 
relatively thinner, prominently produced ventrally; the legs yellowish, 
the middles of the femora and the coxae brownish piceous; the areolet 
moderately small; the length 1.2-1. 7 mm. 
MALE. — As described for the species; pleurae brownish yellow, 
partly brownish; the legs golden yellow, partly touched with brown. 
GALL. — Typical for the species, varying as to its location on leaf 
veins, petioles, young stems, or flower stems, this location apparently 
determined by the species of the host, as follows: 
Q. Douglasii Gall: Elongate swelling of a leaf vein, involving the 
blade; up to 25. mm. in length and 10. mm. in diameter, somewhat ir- 
regular, protruding largely from the under surface of the leaf, smooth, 
green, succulent when fresh, drying dark brown, rather hard and papery, 
without much shrivelling (fig. 60). 
Q. lobata Gall: Elongate swelling mainly of the flower stem, be- 
set with dwarfed clusters of stamens; involving the young twig, petioles, 
and leaf blades to a minor degree; elongate, but very irregular, up to 
15. mm. in length by 8. mm. in diameter, greenish or yellow when fresh, 
drying light yellowish brown and shrivelling considerably upon aging 
(fig. 63). 
RANGE. — California: Cupertino, San Jose (Fullaway); Stanford 
University, Sunol (McCracken) ; Metz (in coll. Univ. Calif.) ; Mt. Diablo 
(F. A. Leach coll.); Zelzah, Gilroy (Redwood School), Coalinga (Al- 
