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Indiana University Studies 
Neuroterus noxiosus form noxiosus Kinsey, 1920, Bull. Amer. Mus. Nat. 
Hist., XLII, p. 338 (not Q. Prinus record, not figs.). 
FEMALE. — Face piceous, shading to light rufo-piceous on the 
mouthparts; antennae golden yellow basally; thorax not very robust 
nor greatly elongate; abdomen distinctly produced ventrally; legs golden 
yellow; areolet of moderate size to small; the first abscissa somewhat 
angulate, with a less distinct projection than in print; length 1. 5-2.0 mm. 
GALL. — As described for the species; large, woody; on stems of 
Quercus bicolor. 
RANGE. — Massachusetts: Everett (Clarke); Boston, Marthas 
Vineyard; Amherst (Thompson); Springfield (Stebbins). Rhode Island: 
Providence (Thompson). Connecticut: New Haven (Champlain, Walden) ; 
Stonington (I. W. Davis in Conn. Exp. Sta.) ; Waterbury (Bassett). 
New York: New York City (Beutenmuller) ; Staten Island (W. T. 
Davis); Mt. Vernon, Spring Valley (Felt). New Jersey: Fort Lee 
(Beutenmuller); New Brunswick (J. B. Smith); Broadway. 
TYPES. — Of noxiosus: Holotype female, paratype females, and 
galls in the Philadelphia Academy; paratype females and galls in The 
American Museum of Natural History and the Museum of Comparative 
Zoology, and in the Kinsey collection. From Waterbury, Connecticut; 
Q. bicolor; Bassett collector. 
Of consimilis: Holotype and paratype females and galls at the 
Philadelphia Academy; from Waterbury, Connecticut; Q. alba; Bassett 
collector. 
This agamic gall begins to develop in mid-summer, the 
insects staying in the galls nine or ten months, emerging from 
March 24 to early May. 
Noxiosus has always heretofore been considered a distinct 
species, no one having pointed out the very close resemblance 
to batatus. If this is remembered it will help one to understand 
the distinctness of my other varieties. Noxiosus differs from 
batatus mainly in slight color characters, the slightly different 
shape of the abdomen, and the size of the areolet being the 
total of other differences. To be consistent, some workers 
should treat noxiosus as a complete synonym of batatus, which 
no one will do in the face of the patent loss of good host 
and life history data. 
Upon examination of paratypes of consimilis, I find that 
the male is clearly a Plagiotrichus while the female is a 
Neuroterus, and these insects entirely agree with the original 
descriptions. It is not certain which insect may have pro- 
duced the compacted, woody galls which Bassett had, for both 
genera are capable of them. The species of the female is 
certainly batatus, and the variety is noxiosus as nearly as 
