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, with 

 a length about twice the diameter, narrowly rounded. 



Thecodiplosis hudsonici Felt 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 393 (Contarinia) 

 This species was taken on red cedar at Poughkeepsie, N. Y., 

 April 19, 1906. 



Male. Length 2 mm. 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 htmieri; submedian lines ornamented with pale yellow hairs. 

 Scutellimi 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 

 t r i t i c i 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 Prodiplosis 

 f i t c h i 1 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 



