98 PROCEEDINGS OF THE NATIONAL MUSEUM vol. us 



venarum ratio, range 0.86-0.93; mean 0.88 (6) ; arculus to m-cu:m-cu 

 to wing tip, range 0.42-0.45; mean 0.43 (6). 



This species is distinguished from closely related forms in the key 

 (p. 102). 



Pentaneura (Pentaneura) inyoensis, new species 



Figure 2e 



Holotype male: USNM 65509, Resting Springs, Inyo Co., May 29, 

 1955. 



Head pale brown; antennal pedicels darker brown. Postocular 

 bristles in single row reaching medial to dorsal extensions of eyes. 

 Clypeus longer than broad with 17 bristles. Palpi 35:50:70:62, 

 Antennal ratio 1.70. 



Thorax pale brown overlaid with conspicuous golden green prui- 

 nescence; vittae and postnotum darker brown. Halteres white. 

 Pronotum with 4 lateral bristles. Supra-alar bristles 2, 1 large, 1 

 small; prealar bristles 8; dorsolateral bristles in 2 staggered rows; 

 anterolateral bristles about 6; scutellum with 8 posterior bristles in 

 transverse row, anteriorly about 10 smaller strewn bristles. 



Legs stramineous; fore tarsal beard 3 times as long as diameter of 

 tarsus. Fore leg with very short sinuate spur with 2 lateral barbs; 

 spur length :tibial apical diameter 20:38. Middle leg with two un- 

 usual spm's of about equal length, each composed of 3 long filaments. 

 Hind leg with only one visible trifid spur as middle leg; with comb 

 of only 4 spines. 



Arculus to m-cu:m-cu to wing tip 0.37. R4+5 terminates slightly 

 distal to Cui; M terminates almost at wing apex, slightly below. 

 Wing length 1.89 mm.; venarum ratio 0.86. 



First abdominal segment largely pale with slight lateral infusca- 

 tion; segments II to V pale brown (to dark brown, paratype) with 

 posterolateral pruinose white areas that almost meet on posterior 

 middorsal line; remainder of abdomen largely brown. 



Female: Unknown. 



Paratypes: In UCLA: 2 males. Resting Springs, Inyo Co., May 30, 

 1955; 3 males, China Ranch, Inyo Co., May 30, 1955; 1 male, 1000 

 Palm Canyon, Riverside Co., March 20, 1954, B; 1 male, Saratoga 

 Springs, May 28, 1955. 



Males: Wing length, range 1.77-2.29; mean 1.95 mm. (6); fore leg 

 ratio 0.89 (1) ; antennal ratio, range 1.60-1.76; mean 1.70 (3) ; venarum 



