A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 



159 



Figure 65. — Anterior tibia of male (A), clypeus (B), and last visible abdominal 

 sternite of male (C) and of female (D) of Chrysobothris monticola. 



surface densely, coarsely, deeply, irregularly punctate, densely clothed with 

 long, erect, inconspicuous hairs, intervals densely granulose ; clypeus broadly, 

 arcuately emarginate in front, slightly rounded on each side. Antenna cupreous, 

 more greenish on basal segments, slightly narrowed to apex ; intermediate seg- 

 ments about as long as wide, subtriangular, broadly rounded at outer margins ; 

 third segment one-third longer than fourth. 



Pronotum nearly twice as wide as long, narrower at apex than at base, 

 widest near apex ; sides arcuately rounded at apex, strongly converging pos- 

 teriorly, nearly parallel at middle ; anterior margin broadly, arcuately emargin- 

 ate, without a median lobe ; base broadly, arcuately emarginate on each side, 

 median lobe slightly produced and broadly rounded ; disk slightly convex, 

 uneven, with a broad, longitudinal, median depression, densely punctate on 

 apical two-thirds and smooth at base, limited on each side on apical half by a 

 broad, smooth, elevated space, and exterior to this space on each side two more 

 or less connected, irregular callosities ; surface between smooth spaces densely, 

 irregularly punctate. 



Elytra slightly wider than pronotum, twice as long as wide ; sides parallel 

 from humeral angles to apical third, then strongly, arcuately converging to tips, 

 which are separately broadly rounded; lateral margins coarsely serrate; basal 

 depressions broad and deep; humeral depressions broad and shallow; surface 

 glabrous, uneven, with numerous rather large, irregular, smooth spaces, between 

 which the surface is densely, finely punctate. Each elytron with four more or 

 less distinct longitudinal costae; first distinct, parallel with sutural margin, 

 narrow and strongly elevated apically, becoming broader at base; the other 

 three more or less indistinct, sinuate, strongly interrupted by the numerous 

 densely punctured areas and smooth spaces. 



Abdomen beneath sparsely, finely fossulate-punctate, slightly rugose at sides 

 of basal sternites, sparsely clothed at sides with short, recumbent, white hairs, 

 intervals nearly smooth; intermediate sternites with a small, more or less dis- 

 tinct, smooth, lateral callosity on each side; last visible sternite semicircularly 

 emarginate at apex, with a slight submarginal ridge, lateral margins coarsely, 

 slightly serrate; eighth tergite rather broadly, shallowly emarginate at apex, 

 sparsely, coarsely punctate, densely granulose, but not longitudinally carinate. 

 Prosternum densely, finely punctate, densely clothed with long, erect, fine, white 

 hairs, with a distinct, wide, short, median lobe in front. Anterior femur 

 with a broad, obtuse tooth, which is distinctly dentate on outer margin. An- 

 terior and middle tibiae strongly arcuate, the former armed with a rounded 

 dilation at apex, slightly constricted behind dilation, the latter gradually 

 broadened at apex; posterior tibia straight. 



Length 15 mm., width 6 mm. 



