228 BULLETIN 145, UNITED STATES NATIONAL MUSEUM 



-without distinct longitudinal costae, sutural margins slightly ele- 

 vated posteriorly, and with broad, moderately deep basal depressions ; 

 surface densely, coarsely imbricate-punctate, and with a few incon- 

 spicuous hairs in the basal depressions. 



Abdomen beneath obsoletely reticulate, densely, coarsely, imbricate- 

 punctate on basal segment, becoming finely, sparsely, punctate, 

 and more or less imbricate on the other segments, and sparsely, uni- 

 formly clothed with short, recumbent, white hairs; first segment 

 feebly flattened, and without a median groove; last segment broadly 

 rounded at apex; vertical portions of segments not conspicuously 

 pubescent; pygidium sparsely, coarsely punctate, feebly carinate, 

 but the carina not projecting. Prosternum finely, densely punctate 

 and granulose, and densely clothed with long, erect, very fine hairs 

 at the middle, extending to anterior part of mesosternum ; prosternal 

 lobe broad, moderately declivous, and broadly but not deeply emargi- 

 nate in front; prosternal process broad, the sides parallel to behind 

 the coxal cavities, then obliquely narrowed to the apex, which is 

 acute. Tibiae slender, anterior pair slightly arcuate, and all pairs 

 armed with a small tooth on inner margin at apex. Posterior tarsi 

 nearly subequal in length to the tibiae, and the first joint about as 

 long as the following three joints united. Tarsal claws similar on all 

 feet, cleft near the middle, the inner tooth slightly shorter than the 

 outer one, and not turned inward. 



Length, 6 mm. ; width, 1.5 mm. 



Female. — Differs from the male in having the head entirely 

 cupreous, about equal in width at top and bottom, lateral margins 

 nearly parallel, the surface more sparsely punctate, not granulose, 

 not so distinctly pubescent behind the epistoma, and the median, 

 longitudinal groove more broadly depressed; eyes slightly more 

 acutely rounded beneath than above ; posterior tarsi distinctly shorter 

 than tibiae; tibiae without a distinct tooth at apex, and the pro- 

 sternum without long, erect pubescence at the middle. 



Bedescribed from the male holotype in the collection of C. A. 

 Frost. 



Type locality. — Harrisburg, Pa. 



DISTRIBUTION 



Material examined : 



Canada: Alberta, Medicine Hat, June 28, 1924 (F. S. Carr). 



Illinois: Eclgebrook, June 12-July 17; Riverside, June 29 (E. Liljeblwd). 



Elgin, July 4-17, 1920 (M. Bristol). Galesburg ( ). 



Iowa: Elma, June 14-30, 1902 ( ). Ames, June 26, 1916 (L. S. Wells). 



Pennsylvania: Harrisburg, reared (Fisher and Kirk) ; June (Ckarnplain and 



Knull). Charter Oak, June 22; Hummelstown, June 5 (J. N. Knull). 



Chinchilla, July 2 ( ). 



