NORTH AMERICAN BUPRESTID BEETLES 95 



Abdomen beneath vaguely granulose, rather coarsely, densely 

 punctate on the basal segments, but becoming more sparsely, finely 

 punctate toward the apex, and sparsely clothed with short, re- 

 cumbent, whitish pubescence; first and second segments convex, and 

 not depressed or pubescent at middle; vertical portions of the seg- 

 ments not conspicuously pubescent; pygidium sparsely, coarsely 

 punctate, with the median carina feebly elevated, but not projecting. 

 Prosternum densely, finely granulose, with a few shallow punctures 

 intermixed, and sparsely clothed with short, semierect, whitish hairs; 

 prosternal lobe broad, strongly declivous, and broadly, feebly emar- 

 ginate in front; prosternal process broad, the sides parallel to 

 behind the coxal cavities, then arcuately narrowed to the apex, which 

 is rather acute. Posterior coxae with the posterior margin broadly, 

 arcuately emarginate, and the exterior angle nearly rectangular. 

 Tibiae slender, and all three pairs armed with a distinct tooth on 

 inner margin at apex. Posterior tarsi slightly shorter than the 

 tibiae, and the first joint as long as the following joints united. 

 Tarsal claws similar on all the feet, cleft near the middle, the outer 

 tooth acute at apex, the inner one slightly broader, turned inward, 

 and the tip sometimes touching that of the opposite side. 



Length, 5.5 mm. ; width, 1.4 mm. 



Female. — Differs from the male in having the front of head 

 broader, more convex, aeneo-cupreous, and not so densely pubescent 

 behind the epistoma; prosternum more finely granulose and the 

 pubescence shorter, and the tibiae unarmed at apex. 



Redescribed from the type in the collection of J. N. Knull. 



Type locality. — Hummelstown, Pa. 



DISTRIBUTION 



Material examined : 



Connecticut: New Haven, June 1; North Guilford, June 16 (M. P. Zappe). 



Cornwall, June (Frost, Chamberlin). Lyme, reared (Fisher, Chaniplain). 

 Illinois: Riverside, June 8 (E. Liljeblad). 

 Michigan: Detroit, May-June (Hubbard and Sehwarz). 



New York: Ilion, May ( ). Poughkeepsie, June ( ). 



Pennsylvania: Hummelstown, June; Linglestown ; Charter Oak, June 21 (J. N. 



Knull). 

 Virginia: Afton (Hubbard and Sehwarz). 



Variations. — Very little variation was observed in the specimens 

 examined, the color is rather constant, but the sides of the pronotum 

 are sometimes widest along the anterior half, with the margins 

 nearty parallel to each other, or slightly sinuate, the median depres- 

 sions are more or less variable in depth, and the anterior margin of 

 the prosternal lobe is subtruncate or feebly emarginate. Length, 

 4.5 to 6 millimeters. 



