192 U.S. NATIONAL MUSEUM BULLETIN 277 



23-30 April 1963 (H. E. Evans) collected from solitary wasp burrow; 

 all in (USNM). 



132. Brevitrichia halli, new species 



Figure 126 



Male. — Head tan, back of head brown; eyes metallic blue-black, 

 darker below; front narrow triangular; ocellar tubercle black-brown, 

 frosted; ocelli clear; antennae brown. See figure for details of shape. 



Thorax dorsum black-brown, granular, with a yellow-orange band 

 along lateral margins broken above wing bases ; humeral callus yellow- 

 orange, scutellum with a broad red-brown triangle and yellow-orange 

 lateral angles. Pleural areas mixed red-brown and yellow-orange, 

 granular; wings clear, veins brown; halter stem tan, knob tan. Legs 

 with femora brown, granular, with yellow knee; tibiae and tarsi 

 brown. 



Abdomen with segments black-brown, with thin posterior white 

 bands; ninth tergum tan, with brown basal patch. See figure for 

 details. 



Female. — Head cream-yellow; back of head brown; eyes metallic 

 blue-black, postocular ridge moderately wide, brown patches laterad 

 of corner of eye; frons broad, with a median groove on lower half, a 

 tan median patch, forked ventrally, with short anteriorly directed 

 brown hairs. Antennae with first two segments brown, third segment 

 black-brown. See figure for details. 



Thorax dorsum black, overlain with brown and tan longitudinally 

 striped pollinose scales; humeral and supra-alar caUi tan; scutellum 

 with a narrow median red-brown patch, lateral areas tan. Pleural 

 areas black-brown covered with tan pollinose scales. Wings hyaline, 

 veins brown; halter stem tan, knob tan. Legs with femora red-brown, 

 knees yellow, covered with tan pollinose scales, remainder red-brown. 



Abdomen red-brown, granular with white posterior membranous 

 margins; eighth segment red-brown, ninth tergum with 9 stiff spines. 

 See figure for details. 



Length: Male body 2.6-3 mm., wing 1.9-2 mm.; female body 

 4.5 mm., wing 2.4 mm. 



Type-locality: 4 mi. w. Pinon Flat, Riverside Co., California; 

 11 June 1954 (J. C. HaU). 



Holotype: Male (UCalD) 77. 



Allotype: Female on same pin with type. 



Paratype: Icf, Verdemont, California; 25 May 1948 (A. L. 

 Melander) (USNM). 



