212 NEW YORK STATE MUSEUM 



Procystiphora n. g. 



The genus has the general appearance of Rhabdophaga and is 

 most easily separated therefrom by the apical chitinized blade of 

 the long ovipositor and the simple or nearly simple claws of this 

 sex. The claws of the male are weakly dentate and the harpes only 

 slightly chitinized. This form approaches Cystiphora in the reduced 

 teeth of the claws and the chitinized apex of the ovipositor, though 

 it is easily distinguished from this genus by the quadriarticulate palpi 

 and the larger number of antennal segments. Type P. color- 

 a d e n s i s n. sp. 



Procystiphora coloradensis n. sp. 



Described from two males and one female collected by Prof. T. 

 D. A. Cockerell at Long's Peak Inn, Colorado, in the Canadian 

 Zone, July 21, 1914 and thought by him to have possibly come from 

 Carex, though the appearance of the midge suggests to the writer 

 that it may be an inhabitant of willow. 



Male. Length 2.5 mm. Antennae nearly as long as the body, 

 sparsely haired, dark brown ; 18 segments, the fifth with a stem one- 

 fourth longer than the basal enlargement, which latter has a length 

 three-fourths greater than its diameter, a moderately thick subbasal 

 whorl of short, stout setae and a thick subapical band of longer 

 setae ; low circumfili occur at the basal third and apically ; terminal 

 segment broadly oval, with a length about one- fourth greater than 

 its diameter, the apex broadly rounded. Palpi ; first segment irregu- 

 lar, subquadrate, the second wath a length two and one-half times 

 its diameter, the third a little longer than the second, slender, the 

 fourth one-fourth longer than the third. Mesonotum shining dark 

 brown. Scutellum dark yellowish brown, postscutellum fuscous 

 vellowish. Abdomen a variable dark reddish brown. Wings 

 hyaline, costa fuscous strawy the third vein uniting with the margin 

 at the apex of the wing, the fifth forked. Halteres fuscous yellow- 

 ish, darker apically. Coxae and legs a variable yellowish brown, 

 the claws minutely dentate, pulvilli distinctly longer than the claws. 

 Genitalia ; basal clasp segment long, rather slender ; terminal clasp 

 segment long, stout, with a distinct apical spur ; dorsal plate long, 

 broad, divided, the lobes long and narrowly rounded ; ventral plate 

 long, broad, deeply and roundly emarginate, the lobes narrow ; 

 harpes moderately long, expanded, roundly truncate and slightly 

 chitinized apically : style short, swollen basally, broadly rounded 

 apically. 



