266 



U.S. NATIONAL MUSEUM BULLETIN 277 



Figure 172. — Pseudatrichia pundulata, D. E. Hardy, male, female: a, wing; b, c, lateral 

 aspects of male and female heads; d, enlarged detail of antenna; e, f, ventral and lateral 

 aspects of male terminalia; g, ventral aspect of female 8th sternum and 9th segment; h, 

 lateral aspect of female 8th and 9th segments. 



they differ in the shape of the basal portion of the spines as well as in 

 other small details. The eyes are divided as in all Scenopinidae into 

 coarse upper facets and fine lower facets and the areas of union is 

 bandlike. The female eighth sternum is much like that of P. longiventris 

 but the female differs in other minor details particularly the eyes and 

 width of the postocular ridge. 



Length: Male body 6.6-7.3 mm., wing 3.7-3.9 mm.; female body 

 7.5-8.3 mm., wing 4-4.3 mm. 



Type-locahty: Nova Teutonia, Brazil; 27°11' S. 52°23' W.; 

 20 February 1940 (Fritz Plaumann). 



Type: (UKan). 



179. Pseudatrichia sabroskyi, new species 



Figure 173 



Female. — Head red-brown; eyes black-brown, postocular flange, 

 narrow, rounded, depressed; back of head gray pubescent; frons 

 subshining with faint median longitudinal striations; oceUar tubercle 

 not prominent, cut off; ocelli orange; mouthparts a little over half 

 the length of the oral cavity; palpi red-brown, slender, subequal in 

 length to mouthparts. Antennae orange-brown; see figure for details. 



Thorax dorsum black-brown, striated; humeral and supra-alar 

 calli red-brown tipped with orange; scutellum red-brown; pleura 

 red-brown. Wings clear, veins brown; halter stem brown, knob with 



