-230 NEW YORK STATE MUSEUM 



Abdomen dark brown, basally dark orange, the segments sparsely 

 haired; ovipositor pale yellowish. Wings hyaline, costa pale brown, 

 the third vein imiting with the margin at the apex. Coxae and 

 base of femora reddish orange, the most of femora, tibiae and tarsi 

 dark brown; claws long, stout, evenly curved, the pulvilli rudi- 

 mentary. Ovipositor short, the lobes lanceolate. Type Cecid. 

 aigiQ. 



Hormom3da alexanderi n. sp. 



This midge was swept from palustral grasses at Johnstown, N. Y., 

 July 7, 1909 by C. P. Alexander. 



Female. Length 3.5 mm. Antennae nearly as long as the body, 

 thickly haired, pale fuscous yellowish; probably fourteen segments, the 

 fifth bmodose, with a total length about five times its diameter, the 

 basal and distal portions of the stem, each a little longer than their 

 diameters; the basal enlargement subglobose, a sparse whorl of 

 stout setae and a circumfilum, the loops long; distal enlargement 

 broadly oval, with a length nearly twice its diameter; subbasal and 

 subapical circumfila, the loops long and a scattering whorl of stout 

 setae. Palpi; basal segment rather stout, with a length five times 

 its diameter, the distal segment greatly produced, with a length 

 nearly three times that of the first. Mesonotum golden reddish. 

 Scutellum and postscutellum yellowish. Abdomen a variable golden 

 yellowish, sparsely haired. Wings subhyaline, thickly clothed with 

 fuscous hairs, costa fuscous, the third vein uniting with the margin 

 a little beyond the apex. Halteres yellowish orange. Coxae and 

 femora mostly yellowish orange, the tibiae fuscous orange, tarsi a 

 little darker; claws long, evenly curved, the pulvilli rudimentary. 

 Ovipositor short, the lobes broadly and irregularly oval Type 

 Cecid. 1353. 



TRISHORMOMYIA Kieff. 



1912 Kiefifer, J. J. Neue GaUmucken-Gattugen, Bitsch, p. 2 



1913 ■ Gen. Insect, fasc. 152, p. 139-40 



Certain species in this genus are separated with difficulty from 

 Hormomyia Kieff., though the extreme forms cannot be confused 

 with typical members of the older genus. The type is T. s t r o b 1 i 

 Kieff. 



A careful study of American material has resulted in separating 

 species referable to this genus by the following characters. The 

 insects are smaller and the mesonotum less distinctly produced over 

 the head than in Hormomyia. There are fewer antennal segments, 

 fifteen (the fifteenth being rudimentary) being the maximum and 

 most species having but fourteen. The flagellate antennal segments 

 of the male have the enlargements more produced than in Hormomyia 

 H. Lw., and the circumfila are relatively longer and there are marked 

 though not easily characterized differences in the genitalia. The 

 flagellate antennal segments of the female are cylindrical, mostly 



