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Indiana University Studies 
variety af finis, from Q. prinoides, is a very distinct insect in 
spite of Beutenmuller’s claim that they are the same. 
The trivial name of this insect is a substantive ending 
in a, and should not have the masculine adjective ending of 
us. 
Neuroterus sub genus Neuroterus Hartig 
Neuroterus Hartig, 1840, Germar Zeit. Ent., II, pp. 185, 192. 
Ameristus Foerster, 1869, Verh. Ges. Wien, XIX, pp. 330, 333. 
Neuroterus Dalla Torre and Kietfer, 1910 (in part). Das Tierreich, 
XXIV, p. 307. 
FEMALE. — Eyes of moderate size or a little larger, not extending 
beyond the cheeks; cheeks of moderate width; malar space rather nar- 
row, with only a trace of a furrow or entirely without a furrow; face 
only finely hairy; antennae with 14 segments, the third usually not much 
longer than the fourth; thorax of moderate size, a little longer than 
wide and high ; mesonotum smooth or roughened, with slight or no 
traces of lines or grooves, naked of hairs ; scutellum rounded, little longer 
than wide; mesopleurae entirely but finely roughened; abdomen of mod- 
erate size, larger than the thorax, higher than long, only slightly pro- 
duced dorsally, roundly angulate; ventral spine almost lacking; legs in 
large part yellow; tarsal claws very fine, simple; wings clear, ciliate, 
more or less not ciliate on the anterior margins; areolet rather small, 
placed symmetrically below the apex; radial cell more or less narrow, 
the first abscissa angled so near the subcosta as to appear almost 
straight; length 1.0-2. 2 mm. 
MALE. — Relatively quite similar to the female, colored very largely 
the same, the eyes much enlarged, protruding beyond the cheeks; the 
third segment of the antennae hardly longer than in the female but dis- 
tinctly curved and apically swollen; abdomen much smaller, minute. 
GALL. — Polythalamous, or simple larval cells (hardly monothala- 
mous), separable or inseparable, without special developments in form or 
structure; on various young tissues of oaks, in buds, on fiowers, leaves, 
or bark. 
RANGE. — Europe and Asia (and northern Africa?). 
TYPE . — Neuroterus politus Hartig. Designated by Ashmead, 1903, 
Psyche, X, p. 151. 
This subgenus is apparently confined to the Old World 
where it is known from about eight species. I have been 
able to examine insects of only four species, N. cerrifloralis 
Miillner, N. glandif ormis (Giraud), N. hakonensis Ashmead, 
and N. nawai Ashmead (the last two from Japan) , but from 
published descriptions it would appear that N. aggregatus 
(Wachtl), N. minutuhis Giraud, N. ohtectus Wachtl, N. 
saliens (Kollar), and N. atamiensis Ashmead are covered 
