214 NEW YORK STATE MUSEUM 
distal slender, slightly curved portion; face yellowish brown. 
Mesonotum with the anterior median triangular area and posterior 
sublateral irregular areas dark brown, the median posterior area 
and oblique sublateral anterior areas and the lateral area bordering 
the posterior submedian darker areas, fuscous yellowish. Scutellum 
yellowish, postscutellum yellowish anteriorly and laterally, black on 
the median posterior area. Abdomen semitransparent, yellowish, 
each segment tinged with orange basally, the sixth and seventh 
segments nearly suffused with orange, genitalia reddish brown with 
fuscous markings. Wings (pl. 14, fig. 4) hyaline, costa pale straw 
tinged with carmine, the third vein joining the margin well beyond 
the apex; halteres (fig. 42) very long, slender, yellowish transparent, 
distally fuscous yellowish. Coxae fuscous yellowish tinged with 
reddish, femora and tibiae fuscous yellowish, tarsi slightly darker, 
tinged with reddish; claws stout, strongly curved at the basal fourth 
(fig. 41). Genitalia (fig. 43); basal clasp segment short, stout; 

Fig. 43 Hormomyia americana, genitalia 
of male (enlarged, original) 
terminal clasp segment slightly swollen at the base; dorsal plate 
broad, deeply and broadly incised, the lobes broadly rounded; 
ventral plate stout, broadly rounded though with a slight median 
emargination. Type Cecid. or. 
Hormomyia palustris Felt 
1907 Felt, E. P. New Species of Cecidomyiidae II, p. 19 
1908 ——_—_—  N. Y. State Mus. Bul. 124, ps 300; 387 
Males of this species were captured May 20, 1907, in considerable 
numbers by Dr James G. Needham on the lake marsh near the 
Limnological laboratory at Ithaca, N. Y. A close search failed to 
disclose any females. 
