88 NEW YORK STATE MUSEUM 



ment with the basal enlargement slightly produced, pyriform, the 

 distal enlargement produced, broadly fusiform. Palpi; the first seg- 

 ment short, stout, irregularly quadrate, the second a little longer, 

 roundly rectangular, the third one-half longer, more cylindric, the 

 fourth one-half longer and more slender than the third, strongly 

 tapering distally. Mesonotum sooty yellowish. Scutellum a little 

 lighter, postscutellum darker. Abdomen yellowish, darker at the 

 extremities. Wings hyaline, costa yellowish brown. Halteres yel- 

 lowish transparent. Legs yellowish brown; claws long, slender, 

 evenly curved; pulvilli nearly as long as the claws. Genitalia; 

 basal and terminal clasp segments short, stout; dorsal plate short, 

 stout, deeply, roundly and narrowly emarginate, the lobes broad; 

 ventral plate long, tapering, triangularly emarginate, the lobes 

 narrowly rounded. 



Female. Length 1.25 mm. Antennae pale straw, about one-half 

 the length of the body; 14 segments, the fifth with the stem about 

 one-fourth the length of the subcylindric basal enlargement, which 

 latter has a length one-half greater than its diameter; terminal seg- 

 ment reduced, broadly oval. Palpi; first segment subquadrate, the 

 second a little longer, broader, the third one-half longer than the 

 second, more slender, the fourth one-third longer than the third. 

 Wings with a length nearly twice the width, plainly narrower than 

 in the male. Ovipositor scarcely half the length of the abdomen, 

 the basal segment thick, with a length one-half greater than its 

 diameter, the distal segment short, with a length about four times 

 its diameter and apically with indistinct, narrowly rounded, setose 

 lobes. Color characters nearly as in the male. 



This species is based upon the male, the association of the female 

 being provisional only. Type Cecid. 52. 



Lobopteromyia foetedi Felt 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 390 



The yellowish male with a dark-brown mesonotum was taken 

 May 16, 1906 on skunk cabbage, Symplocarpus foetidus, 

 at Karner, N. Y. 



Male. Length .75 mm. Antennae light brown and a little longer 

 than the body, thickly clothed with fine hairs, 14 segments, the fifth 

 with stems one-half and two times their diameters respectively. 

 Palpi; the first segment short, stout, subquadrate, the second a 

 little longer, roundly rectangular, the third one-half longer than the 

 second, tapering at both extremities, rather slender, the fourth one- 

 fourth longer than the third and a little stouter. Mesonotum dark 

 brown, scutellum reddish brown, abdomen yellowish transparent, 

 wings hyaline, costa brownish; halteres and legs yellowish trans- 

 parent, the tarsi with a few irregular dark markings, claws long, 

 evenly curved, the pulvilli nearly as long as the claws. Genitalia; 

 basal clasp segment short, broad; terminal clasp segment short, 

 stout; dorsal plate short, broad, deeply and triangularly incised, 



