l86 ^ NEW YORK STATE MUSEUM 



men nearly uniform dark brown, the terminal segments light yellowj 

 rather sparsely clothed with yellowish hairs. Wings subhyaline, 

 costa dark brown; halteres yellowish transparent basally, slightly 

 fuscous apically. Legs nearly uniform fuscous yellowish, tarsi 

 lighter, terminal segments variably and slightly tinged with carmine; 

 claws long, slender, strongly curved near the middle. Genitalia 

 (pi. 20, fig. 5); dorsal plate broad, deeply and narrowly incised, the 

 lobes tapering; ventral plate broad, long, deeply and roundly emargi- 

 nate, the lobes broad, diverging, obliquely truncate; style long, stout, 

 swollen at the basal third, constricted at the distal fourth, more so 

 at the distal eighth, slightly expanded and nan-owly rounded. Type 

 Cecid. 409. 



Itonida agraria Felt 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 413 (Cecidomyia) 

 This pale yellowish male was captured at Newport and Nassau, 

 N. Y., in June and July, 1906. 



Male. Length .75 mm. Antennae fully twice as long as the body, 

 thickly haired, pale straw; fourteen segments, the fifth with stems 

 each three and one-half times their diameter; terminal segment, distal 

 enlargement prolonged, subcylindric, apically a nearly equally long, 

 spindle-shaped process. Palpi; the first segment irregularly sub- 

 quadrate, the second, third and fourth each nearly subequal, with a 

 length about four times the diameter; face yellowish. Mesonotum a 

 variable orange, _ slightly darker anteriorly. Scutellum and post- 

 scutellum a variable orange. Abdomen a pale yellowish orange. 

 Wings hyaline, costa very pale straw; halteres whitish transparent. 

 Legs almost whitish transparent, tarsal segments annulate with light 

 brown; claws slender, vmiformly curved. Genitaha; dorsal plate 

 broad, deeply and narrowly incised, the lobes broadly rounded exter- 

 nally, irregularly and obliquely truncate, the internal and external 

 angles slightly prolonged, each with a stout apical seta; ventral plate 

 broad, long, deeply, broadly and roundly emarginate, the lobes well 

 separated, narrow, narrowly rounded; style long, slender broadly 

 rounded. Type Cecid. 247. 



Itonida terrestris Felt 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 413 (Cecidomyia) 

 This dark yellowish male was taken June 21, igo6 in a trap lantern 

 at Poughkeepsie, N. Y. 



Male. Length .75 mm. Antennae one-fourth longer than the 

 body, thickly haired, light brown; fourteen segments, the fifth with 

 stems three and three and one-half times their diameters. Palpi; 

 the first segment irregular, subcylindric, with a length one-half 

 greater than its diameter, the second with a length about four 

 times its diameter, the third a little shorter and more slender and the 

 fourth a little longer and more dilated than the third. Mesonotum 



