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Indiana University Studies 
the common oak about Manitou. Not only stems and buds, 
but also flowers and leaves should be involved in the galls 
of this bisexual form. Gillette compared his galls to those 
of N. vesicula, but the two are very different. There is no 
question of the relation of congregatus to the Pacific Coast 
varieties of the species. The male of this variety is the 
darkest in the species, furnishing another instance of the 
melanism common at Manitou. 
Neuroteriis quercicola variety fragilis Bassett 
bisexual form 
Neuroteriis fragilis Bassett, 1900, Trans. Amer. Ent. Soc., XXVI, p. 335. 
Dalla Torre and Kieffer, 1902, Gen. Ins. Hymen. Cynip., p. 51; 1910, 
Das Tierreich, XXIV, pp. 330, 813, 838. Beutenmuller, 1910, Bull. 
Amer. Mus. Nat. Hist., XXVIII, p. 133, pi. XIII, fig. 1. Thompson, 
1915, Amer. Ins. Galls, pp. 14, 40. Felt, 1918, N.Y. State Mus. 
Bull., 200, p. 90, fig. 85 (1). McCracken and Egbert, 1922 (in 
small part), Stanf. Univ. Pub., Ill (1), p. 10. 
FEMALE and MALE. — From the original description, appear to 
differ from the other varieties of the species in having the legs very 
pale yellow and the length 0.7 mm. (acc. Beutenmuller), or 1.2 mm. 
(acc. Bassett). 
GALL. — Typical for the species, rather small, on the midveins, in- 
volving the blades; an irregular, polythalamous swelling up to 6 mm. 
in diameter; on Quercus dumosa. 
RANGE. — California: San Diego (vicinity) (Bassett) ; Pasadena, 
Upland. Probably thruout southern California from Palo Alto and El 
Portal south, wherever Q. dumosa occurs. 
TYPES. — Holotype female, paratype females, males, and galls at 
the Philadelphia Academy; from San Diego, California; D. B. Hamil- 
ton collector. 
I have not seen insects of this variety, and have depended 
upon the meager, original description for my note on the 
adult. I have galls from Pasadena and Upland which agree 
with the original description and with the figure given by 
Beutenmuller (1910). The Beutenmuller material, altho not 
definitely designated, would appear to have come from Bassett. 
The small galls with small exit holes would favor Beuten- 
muller’s 0.7 mm. instead of Bassett’s .05 inches for the length 
of the insect. My galls, as well as Beutenmuller’s, are from 
Q. dumosa; Bassett recorded the host as ‘'a small oak in 
southern California, probably Q. virens or a related species.” 
Wold, in McCracken and Egbert, considered fragilis and 
