252 BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



sparse, long, erect black hairs; mandibles tridentate; clypeus punc- 

 tate, and bidentate medially at the apical margin; the first and sec- 

 ond segments of the flagellum approximately equal in length; scape 

 punctate, obscurely bicarinate beneath; antennal scrobes strongly 

 carinate above ; front, vertex and genae with shallow, irregular, more 

 or less confluent punctures ; relative widths of head and thorax, 7-7. 



Thorax very dark mahogany red; pronotum, mesonotum, and 

 scutellum clothed with long, erect, golden-yellow hairs; remainder 

 of thorax clothed with long, sparse, black hairs; pronotum, mesono- 

 tum and scutellum with large, close, more or less confluent punctures ; 

 tegulae testaceous, glabrous, with a fringe of long, yellow hairs at 

 the basal and inner lateral margins ; propleura with scattered, small, 

 shallow punctures on the disk; mesopleura with large, more or less 

 confluent punctures, the anterior third with the punctures well sepa- 

 rated; metapleura glabrous, with irregular, scattered punctures on 

 the ventral half ; sides of propodeum with large, scattered punctures, 

 becoming foveolate at the caudal margin; dorsal and posterior faces 

 of the propodeum irregularly foveolate. 



Abdomen dark mahogany red, clothed with golden yellow hairs; 

 first segment short; first tergite coarsely punctured, clothed with 

 very long, sparse, black hairs; second tergite coarsely, deeply and 

 confluently punctured at the base and sides, but with small, well 

 separated punctures on the disk and caudal margin, clothed with 

 long, erect, black hairs on the anterior third, and with long, erect, 

 golden yellow hairs on the posterior two-thirds ; tergites 3-6 testace- 

 ous, with small, scattered punctures, and clothed with long, erect, 

 golden yellow hairs; last tergite subtestaceous, irregularly rugose, 

 the basal fourth clothed with long, erect, golden yellow hairs; first 

 sternite with a prominent, median, longitudinal carina; second ster- 

 nite irregularly punctured, the punctures shallow and scattered on 

 the disk, deeper and closer at the margins, with a large, elliptical, 

 median pit closely packed with erect bristles slightly cephalad of 

 the center, the apical margin of the sternite with a thin fringe of 

 golden yellow hairs; sternites 4—6 with small scattered punctures, 

 each with a thin apical fringe of golden yellow hairs; last sternite 

 irregularly punctate, sparsely clothed with erect, black hairs. 



Legs dark mahogany red, sparsely clothed with long, black hairs. 



Wings dark fuliginous; cell 2nd R^ + R^ broadly truncate at the 

 apex; cell R^ indistinct; vein M3+^ received by cell R5 at one-third 

 the distance between the base and apex of the latter, veins r-m and 

 Rg approximate on vein r. 



Allotype. — Stanford University, California, September, collection 

 of University of Minnesota. 



