144 



BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



broad median area of black and the fifth almost entirely black with 

 only a little white pubescence laterally. Length, 12 mm. 



Head dark mahogany red and clothed with sparse, black pubes- 

 cence, except the front and vertex ferruginous and clothed with long, 

 dense, erect, ferruginous pubescence; mandibles acute at the apex, 

 unidentate within; clypeus feebly bidentate medially on the apical 

 margin; cephalic half of clypeus transversely concave, glabrous, im- 

 punctate; caudal half of clypeus finely, confluently punctate; apical 

 fringe black; scape dark mahogany red, with large, close punctures, 

 sparsely clothed with coarse, dark pubescence ; first segment of flagel- 

 lum one and one-third times as long as it is broad at the apex; 

 antennal scrobes weakly carinate above, the carina extending a little 

 more than half the distance from the antennal tubercles to the 



Fig. 13. — Distribction of Dastmutilla ursdla (Cresson) 



margins of the eyes; front and vertex coarsely, confluently punc- 

 tured ; genae with very close, distinct punctures, not nearly as coarsely 

 punctured as the front and vertex; relative widths of head and 

 thorax, 7.5-8.75. 



Thorax dark mahogany red, clothed with sparse, long, black hairs 

 •on the sides; dorsum of thorax bright ferruginous, clothed with long, 

 dense, erect, ferruginous pubescence; dorsum of thorax confluently 

 foveate; propleura with large, confluent punctures; anterior half of 

 mesopleura with small, close, distinct punctures, the posterior half 

 with large, coarse, confluent punctures; ventral half of metapleura 

 with xjoarse, confluent punctures, the latter becoming separated to- 

 ward the dorsal margin of the area, the dorsal half of the metapleura 

 glabrous, impunctate; anterior half of sides of propocleum with 

 large, separated punctures, the posterior half contiguously foveate: 



