SCENOPINIDAE OF THE WORLD 189 



Halter stem brown, knob tan above, cream below. Legs black-brown, 

 poUinose; knees of femora yellow-brown. 



Abdomen segments black-brown, poUinose, with thin creamy 

 membranous posterior margins, ninth tergum with basal portion 

 red-brown, remainder creamy; see figure for details. 



Female. — Head yellow; eyes dark red-brown; postocular ridge 

 moderately wide, brown bands from corners of eyes down over back 

 of head, lateral areas yellow-orange, covered with red-brown an- 

 teriorly directed hairs; frons broad, nearly twice the width of the 

 ocellar triangle, divided by a median groove which is bordered by a 

 band of brown, with short golden brown hairs. Ocellar tubercle black- 

 brown, poUinose, ocelli red-orange. Antennae with first two segments 

 brown, the second shorter than the first, thu'd segment black-brown; 

 see figure for details. 



Thorax dorsum black-brown ground, covered with longitudinal 

 bands of brown and tan pollen, an orange patch over humeral callus; 

 humeral and supra-alar calli cream; scutellum with a broad median 

 brown band, with lateral margins cream. Pleural areas with prothorax 

 brown; mesanepisternum cream with a large dark brown patch; 

 mesokatepisternum dark brown, poUinose. Wings smoky brown, 

 veins brown; halter stem brown, knob tan above, cream below. 



Abdomen red-brown, poUinose; eighth segment red-brown, shining; 

 ninth tergum with 7 stiff spines, hairy; see figure for details. 



Length: Male body 3.2 mm., wing 2.3 mm; female body 4.5 mm., 

 mng 2.5 mm. 



Type-locality: Mount Laguna, San Diego Co., California; 21 

 June 1963 (H. L. Griffin). 



Holotype: Male (CAS) 8924, on loan from (UCalB). 



AUotype: Female same data as type (CAS). 



Paratype: 1 9, Mt. Laguna, San Diego Co., California; 21 June 

 1963 (P. D. Hunt) (UCalB). 



131. Brevitrichia griseola (Coquillett) 



Figure 125 

 Pseudatrichia griseola Coquillett, 1900, p. 501. 



This species, as are most Brevitrichia, is limited in its distribution 

 to a small geographical area, in this case along the middle reaches of 

 the Rio Grande. Specimens were examined from near the type locality, 

 near Las Cruces, New Mexico, and Lajitas, Texas in the Big Bend 

 area, where wasps were provisioning their nests with them. 



More detailed descriptions of the male and female follow. The para- 

 type of (^oquUlett is now the new species B. coquilletti. 



