INSECT NOTES FOR I9IO. 1/ 



wing is rounded and the veins are stout. There is no stigma, Ri 

 striking the margin at a point a little nearer to the base of the 

 wing than to the distal end of Rs. The cephalic branch of R 

 touches very nearly the extreme tip of the wing. The wing 

 length is about 1.85 mm. Fig. 18 gives a typical wing of this 

 species. 



Genitalia. In the male the abdomen is abruptly constricted 

 just cephalad the genitalia. The supra-genital plate (sa) is a 

 fleshy upright structure attached to the dorso-cephalic portion of 

 the subgenital plate. It ends distally in a membranous ring 

 which is the anus(^aj. Extending caudad from the lateral areas 

 of the supra-genital plate are two lateral processes (Ip) of this 

 plate. In a lateral aspect these plates are triangular in form, the 

 cephalic portion being' attached to the upright portion of the su- 

 pra-genital plate. The distal portion of these lateral processes 

 touch the lateral surface of. the forceps when the forceps are di- 

 rected cephalad. The supra-genital plate is armed with short 

 spine-like setae which are visible through a 1-6 in. objective. 

 Those near the region of the anus are longest and stoutest. 



The arms of the forceps (f) at the caudal extremity of the 

 sub-genital plate (sg) are from the lateral aspect largest at the 

 distal end which is blunt and somewhat rounded. Each arm 

 (Fig. 24) is supplied on the inner surface near the tip with a 

 large strong claw-like process. The forceps when examined 

 through a 1-6 in. objective are seen to be sparsely supplied with 

 setae. At the base of each arm on the cephalic surface is a 

 strong spine-like seta. Figs. 21, 22 and 24 represent these 

 parts. 



The genital segment of the female is somewhat wedge shaped 

 and is less than the combined length of the 3 preceding ventral 

 segments. The supra-genital plate (sa) is gently up-curved at 

 the distal tip. The dorsal portion is supplied with long setae 

 plainly visible through a 2-3 inch objective. Its lateral surface is 

 thickly beset with very short, stout setulae visible through a I--6 

 inch objective. Near the base of this plate at the dorsal median 

 line is a region of circum-anal wax glands. These were difficult 

 to locate in the ordinary. dissected balsam mount. The subgeni- 

 tal plate (sg) is not so long as the upper plate, being about the 

 length of the 2 preceding ventral segments. Its surface is 



