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Indiana University Studies 
varieties. Probably in all cases the agamic form emerges 
as the young buds unfold; the bisexual form occurs in galls 
on any young part of the oak, emerging from April thru 
June, earlier further south; the agamic galls start growth 
early in the summer, on any growing tissue except aments. 
Each variety occurs on a distinct oak, the six known insects 
being described from three faunal areas on five species of 
oak. Both white and chestnut oaks are involved. Over 60 
varieties should be found. The varieties have insects which 
are all very similar. 
Neiiroterus vernus variety bassettii Dalla Torre 
bisexual form 
Neuroter 2 is pallipes Bassett, 1890, Trans. Amer. Ent. Soc., XVII, p. 89. 
Beutenmuller, 1910, Bull. Amer. Mus. Nat. Hist., XXVIII, p. 128, pi. 
XII, fig. 10. Beutenmuller in Smith, 1910, Ins. N.J., p. 599. Thomp- 
son, 1915, Amer. Ins. Galls, pp. 18, 41. Felt, 1918, N.Y. State 
Mus. Bull., 200, pp. 82, 104, fig. 53 (10). Cresson, 1923, Trans. 
Amer. Ent. Soc., XLVIII, p. 201. 
Neiiroterus bassettii Dalla Torre, 1892, Wiener Ent. Zeit., XI, p. 131; 
1893, Cat. Hymen., II, p. 40. Dalla Torre and Kieffer, 1910, Das 
Tierreich, XXIV, pp. 335, 813, 816, 826. 
Neuroterus pallidipes Dalla Torre, 1892, Wiener Ent. Zeit., XI, p. 131. 
Dalla Torre and Kieffer, 1902, Gen. Ins. Hymen. Cynip., p. 51. 
FEMALE. — Mouthparts light rufo-piceous ; antennae brown, brown- 
ish yellow basally; abdomen higher than long, not produced, or slightly 
produced dorsally; legs bright yellow at the joints and on the tarsi; 
areolet moderately large; radial cell moderately narrow; length 1.2 mm. 
MALE. — As described for the species. 
GALL. — Small, slight, one-celled swellings, usually covered with a 
rather thick, ragged pubescence; on petioles and veins, dwarfing the 
leaves of Q. alba. 
RANGE. — Massachusetts: Boston (Clarke coll.). New York, New 
Jersey (Beutenmuller). 
TYPES. — Named Neuroteiucs pallipes Bassett. Holotype female 
and paratype females, males, and galls at the Philadelphia Academy. 
From Boston, Massachusetts; Q. alba; Miss Cora H. Clarke collector. 
Males from the same locality and host in The American Museum of 
Natural History. 
This insect comes very close to being a synonym of exiguus, 
the slightly larger areolet and the host being the only good 
characters for distinguishing bassettii. I have seen a paratype 
female, and males from the type locality, host, and collector. 
This American Museum material is dated June 2; Beuten- 
