REPORT OF THE STATii ENTOMOLOGIST I918 223 



Trishormomjria consobrina Felt 



1907 Felt, E. P. New Species of Cecidomyiidae II, p. 18 (Hormomyia) 

 jgo8 N. Y. State Mus. Bui. 124, p. 299, 387 (Hormomyia) 



This form was taken on Azalea at Albany, N. Y., June 6, 1907. 



Male. Length 5.5 mm. Antennae extending to the fifth abdom- 

 inal segment, sparsely haired, dark brown; fifteen segments, the 

 fifth with stems three-fourths and as long as the diameter; terminal 

 segment reduced, irregularly fusiform. Palpi; the first segment 

 stout, tapering distally, with a length three times its diameter, the 

 second one-half longer, slender, tapering to a subacute apex. Face 

 dark brown and yellowish. Mesonotum dark brown, the submedian 

 lines sparsely haired. Scutelltim pale orange yellow, postscutellum 

 darker. Abdomen dark brown, the eighth segment mostly yel- 

 lowish. Genitalia fuscous. Venter pale yellowish orange. Wings 

 hyaline, costa light brown, the third vein joining the margin just 

 beyond the apex. Halteres yellowish basally and apically, the 

 stem semitransparent. Legs long, slender, light fuscous yellowish; 

 claws long, stout, evenly curved, the pulvilli one-third the length 

 of the claws. Genitalia; basal clasp segment long; terminal clasp 

 segment long, stout; dorsal plate short, broad, broadly emargmate, 

 the lobes obliquely truncate; ventral plate long, spatulate, strongly 

 constricted near the middle, roundly truncate. Type Cecid. 1204. 



Trishormomyia shawi Felt 



1913 Felt, E. P. Psyche, 20:145 (Hormomyia) 



This species is separated from the allied T. consobrina Felt 

 by colorational characters and the extremely slender second palpal 

 segment. It was received from C. W. Johnson of the Boston 

 Society of Natural History and labeled: " VIII-20, 1909, Hampton, 

 N. H., S. A. Shaw, 1 187." 



Trishormomyia satumi Felt 



1914 Felt, E. P. N. Y. Ent. Soc. Jour., 22:133 (Hormomsda) 



The midge was taken August 24, 1909, by C. P. Alexander in the 

 Adirondacks, altitude 1540 feet. It may be separated from the 

 related T. shawi Felt by the darker abdomen and the distinctly 

 longer stems of the fiagellate antennal segments. 



Trishormomyia fenestra Felt 



1915 Felt, E. P. Can. Ent., 47:231-32 (Hormomyia) 



The.midge is closely related to T. shawi Felt, from which it is 

 easily distinguished by marked differences in color characters and 

 in the structure of the basal clasp segment. Both sexes were taken 

 by C. P. Alexander, August 22, 19 10, at Woodworth's Lake, Fulton 

 county, N. Y. 



