210 



U.S. NATIONAL MUSEUM BULLETIN 2 77 



Figure 137. — Brevitrichia scitulaesca, new species, female: a, wing; h, lateral aspect of head; 

 c, enlarged detail of antenna; d, dorsal aspect of head; e, ventral left and dorsal right aspects 

 of 8th and 9th segments;/, lateral aspect of 8th and 9th segments; g, bursal structure. 



144. Brevitrichia timherlakei, new species 



Figure 138 



Male. — Head cream; eyes red-brown, with a blue-green metallic 

 sheen, more intense below; frons narrow, triangular; ocellar tubercle 

 red-brown, with gray pollen; ocelli red. Antennae with first two seg- 

 ments tan, third segment tan basally, brown distally. 



Thorax red-brown, covered with gray-green pollen, area above 

 humeral callus and in front of scutellum yellow, as well as marginal 

 areas; humeral and supra-alar calli cream; scutellum yellow, with a 



