SCENOPINIDAE OF THE WORLD 241 



Abdomen with segments 2-5 black, rugose with a purple metallic 

 sheen; segments 6 and 7 subshining; eighth segment black, sternum 

 hairy, concave on posterior margin; see figure for details. 



Male. — Unknown. 



Length: Female body 4.5-5 mm., wing 3-3.2 mm. 



Type-locality: 2 mi. n., 1.2 mi. w. Auberry, Fresno Co., California; 

 9 January 1958 (A. M. Barnes) reared from larva found in woodrat 

 nest. 



Holotype: Female (USNM) 67462. 



Paratypes: 1 9, same data as type; 1 9, Hackamore, Modoc Co., 

 California, 24 May 1938 (A. M. Barnes) reared, nest of Neotoma 

 cinerea in (AMB); 1 9, Stanford Univ., California, 3 November, 1900 

 (Melander); 1 9, Yucca Valley, California, 5 October 1934 (A. L. 

 Melander) both (USNM). 



162. Pseudatrichia convexa, new species 



Figure 156 



Female. — Head black; eyes black-brown; postocular ridge with 

 a flat rim; frons swollen above antennae, striated as in figure; ocellar 

 triangle shallow, not cut off, ocelli red-brown. Mouthparts red-brown, 

 palpi half as long as oral opening. Antennae black; see figure for 

 details. 



Thorax dorsum black, transversely striated; humeral and supra- 

 alar calli red-brown; pleural area red-brown. Wings clear, veins 

 brown; halter stem brown, knob base and dorsal rib brown, remainder 

 white. Front leg orange-bro\vn, with black-brown tarsus, middle leg 

 red-brown, tarsus black-brown; hind leg red-brown, base of first 

 tarsal segment yellow-brown, remainder black-brown. 



Abdomen segments 2, 3, 4 and the base of 5 black, rugose; remainder 

 black, shining. Eighth segment black, sternum broad, with rounded 

 posterior margin; see figure for details. 



Male. — Unknown. 



Length: Female body 7 mm., wing 4.4. mm. 



Type-locality: Lake City, Colorado; 21 August 1938, elev. 9000 

 ft. (Chas.L. Fluke). 



Holotype: Female (USNM) 67458. 



163. Pseudatrichia eaithales, new species 



Figure 1.57 



Female. — Head black; eyes black-brown; postocular ridge broad, 

 striated; frons with a thin median groove bordered by transverse 

 striations; ocellar tubercle prominent, set off, ocelli brown; mouth- 



