128 NEW YORK STATE MUSEUM 
of the third. Color and other characters as in the opposite sex 
Ovipositor apparently short, the terminal lobes short, stout, wit 
a length about twice the diameter, narrowly rounded. 
Thecodiplosis hudsonici Felt 
1908 Felt, E. P. N. Y. State Mus. Bul. 124, p. 393 (Contarinia) 
This species was taken on red cedar at Poughkeepsie, N. Y.. 
April 19, 1906. 
Male. Length 2mm. Antennae probably a little longer than the 
body, thickly haired, light brown; 14 segments, the fifth with stems 
three-fourths and one and one-half times their diameters. Palpi 
first segment rather broad, irregular, the length three times its 
diameter, the second a little longer, more slender, the third one-fourth 
longer than the second, the fourth one-half longer than the third, 
flattened, very broad. Mesonotum dark brown, the sublateral 
areas darker than the median; distinct clusters of hairs occur below 
the humeri; submedian lines ornamented with pale yellow hairs. 
Scutellum reddish, sparsely ornamented with yellowish setae. Abdo- 
men reddish brown. Wings pale yellowish; halteres yellowish. 
Legs a variable yellowish or brown; claws rather slender, strongly 
curved. Genitalia; basal clasp segment slender; terminal clasp 
segment stout at base; dorsal plate broad, deeply and triangularly 
emarginate, the lobes broadly curved. Type Cecid. 3. 
Thecodiplosis zauschneriae Felt 
1912 Felt, E.P. N. Y. Ent. Soc. Jour., 20:152-53 
The midges were reared from rosette galls on Zauschneria 
californica collected by P. H. Timberlake, Whittier, Cal. 
Thecodiplosis mosellana Gehin 
1912 Felt, E.P. Econ. Ent. Jour., 5:287-88 
The wheat midge of American wheat and rye fields is with very 
little question the above-named species and the extensive American 
literature purporting to deal with Cecidomyia or Diplosis 
tritici Kirby relates in all probability to this less-known European 
species. Other midges may be reared from wheat heads. The 
writer has described two other species, namely, Prodi liosais 
fitchii and Itonida tritici, from material reared from 
wheat heads. Both of these seem to be associated species and of 
relatively slight. economic importance. 
The records of earlier injury in this country by wheat midge 
have been discussed so many times that there is no necessity of 
going over the data again. The life history and habits of this insect 
