SCENOPINIDAE OF THE WORLD 177 



distally; eighth segment red-brown; niiith tergum with 8 stiff spines 

 and a dorsal pit. See figure for details. 



J^ength: Male body 2.7 mm., wing 2.2 mm.; female body 4.7 mm., 

 wing 2.4 mm. 



Type-locality: Anza, Riverside Co., California; 5 July 1956 

 (R. M. Bohart). 



Holotype: .Male (UCalD) 76. 



AUotype: Female on same pin as type. 



Paratypes: 1 9, Palm Springs, California; 4 May 1953 (W. R. M. 

 Mason) (CNC) ; 1 9, 3 mi. s. of Palm Springs, 29 August 1951 (Timber- 

 lake) (PHT). 



124. Brevitrichia castanea, new species 



Figure 118 



Male. — Head cream, eyes red-brown above, black-brown below; 

 frons small, triangular; mouthparts well developed; ocellar tubercle 

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

 brown, third segment missing. 



Thorax dorsum red-brown, with granular poUinose, lateral margins 

 cream; scutellum all but the lateral corners red-brown; pleural areas 

 with pro thorax cream; mesanepisternum cream with usual red- 

 brown spot; mesokatepisternum red^brown with cream band above. 

 Wings smoky, veins tan; halter stem brown, knob white. Legs with 

 femora red-brown, with yellow knees; tibiae and tarsi brown. 



Abdomen second segment red-brown basally with median central 

 stem narrowdng to a point posteriorly, with a narrow lateral base, 

 remainder pristine white; remaining segments white dorsally. Ninth 

 tergum red-brown, with a narrow posterior margin of white. See 

 figure for details. 



Female. — Unknown. 



Length: Male bod}^ 2.5 mm., wing 1.7 mm. 



Type-locality: Glens Ferry, Idaho; 5 August 1927. 



Holotype: Male (USNM) 67487. 



125. Brevitrichia coquilletti, new species 



Figure 119 

 Pseiidatrichia griseola Coquillett, 1900, p. .oOl, (in part). 



Male. — -Head cream; eyes red-brown above, black-brown below; 

 frons very narrow, triangidar; ocellar tubercle red-brown, covered 

 with granular gray j)olleii. Antennae with first two segments brown, 

 third yellow-brown to red-brown; see figure for shape. 



Thorax dorsum red-brown; a median band extenduig two-thirds 

 of the way to the scutellum, bordered on either side by narrower 



