422 NEW YORK STATE MUSEUM 



of the foregoing- and from C. vexans also, the male ditTers 

 in having a white band on the middle of the long second joint 

 of the palpus. In spite of the tooth on the underside of the hind 

 claws I believe mv identification is correct. 



Male. Length 5mm. Antennae with long fulvous hairs, pro- 

 boscis and palpi dark brown, the latter with a white band on 

 the middle of the long second joint, and the bases of the third 

 and fourth joints white. The occiput with golden yellow hairs 

 and patches of blackish and whitish scales ; dorsum of the thorax 

 with a black or brown ground uniformly covered with golden 

 yellow hairs, the posterior margin and the scutellum with si 

 fringe of longer yellow hairs; metanotum light grayish brown, 

 bare; pleura brown with whitish scales. 



Each segment of the abdomen dorsally with its anterior 

 fourth covered with short white scales; posterior part of 

 the segments black slightly produced forward in the center 

 and the posterior margins of the next to the last whitish;, 

 the last one wholly black; genitalia brown, the apical joint 

 slender with a spine near its apex [pl.-iO, fig.l2] ; venter pale 

 brown with whitish scales; entire abdomen with long, erect pale 

 brown hairs; femora brownish, the bases and the flexor surface 

 of the middle and hind pairs and sometimes the front pair also,, 

 white; tibiae and tarsi brownish black, flexor surface paler; the 

 immediate base (about one eighth of the length) of each joint of 

 the tarsi yellowish white. The hind legs with erect, yellow 

 setae. All tarsal claws with a tooth on the under side of each. 

 The long claw of the middle foot as shown in figure 12. The 

 venation is about as that shown for C. cantans, though 

 the posterior cross vein is not oblique. Halteres yellowish 

 white. 



Female. Differs from the male only as follows. Antennae 

 brown, basal two or three joints yellow; abdomen marked like 

 the male, but the long hairs are only on the posterior margin 

 of each segment; genitalia black, consisting of two fingerlike 

 lobes; venter yellow with white scales, posterior margin of the 

 segments black. Tarsal claws like the male. 



Described from bred specimens. 



Larva. The larva resembles that of C. cantans. The man- 

 dibles are like those shown on plate 45. though the teeth are 

 more blunt; the maxilla is like that shown on the same plate,, 

 though the palpus is rather shorter than shown here, and there 

 are two lateral spines. The labium is pointed, and the antenna 

 has a tuft of bristles near the middle. The teeth on the sides 

 of the eighth segment are arranged in one irregular row. The 

 spines of the longitudinal row of the breathing tube each have 



