A REVISION' OF NORTH AMERICAN CHRYSOBOTHRINI 



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Figure 83. — Anterior tibia of male (A), clypeus (B), and last visible abdominal 

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



Male. — Broadly elongate, rather strongly depressed above, moderately shining, 

 piceous, with faint greenish and cupreous tinges ; beneath piceous, with greenish 

 and purplish reflections in certain lights, and more strongly shining than above. 



Head bright reddish cupreous, bright green on clypeus, with a strong, elevated, 

 transverse carina on vertex, and an obsolete, irregular, transverse carina (which 

 is broadly interrupted at middle ) midway between vertex and clypeus ; front very 

 uneven, broadly, deeply depressed behind clypeus; surface coarsely, confidently 

 punctate, rather densely clothed with short, erect, inconspicuous hairs ; eyes 

 nearly contiguous on occiput ; clypeus strongly elevated, broadly, deeply, angularly 

 einarginate in front, arcuately rounded on each side. Antenna bronzy green, 

 with a golden tinge, becoming blackish toward outer margins of segments, strongly 

 narrowed to apex; intermediate segments compact, quadrate, as long as wide, 

 broadly truncate at outer margins; third segment broad, slightly longer than 

 following two segments united. 



Pronotum twice as wide as long, narrower at apex than at base, widest along 

 middle ; sides strongly, obliquely converging anteriorly, parallel and distinctly 

 sinuate along middle, strongly converging and broadly, arcuately emarginate along 

 basal third ; anterior margin broadly, deeply, arcuately emarginate, without a 

 median lobe ; base deeply, arcuately emarginate on each side, median lobe slightly 

 produced, subtruncate in front of scutellum ; disk moderately convex, uneven, 

 with a shallow, elongate, median depression, and four or five more or less distinct 

 depressions on each side ; surface coarsely, densely, uniformly punctate, with a 

 few short, erect, inconspicuous hairs toward sides. Scutellum long, and acute 

 posteriorly. 



Elytra slightly wider than pronotum, two-thirds longer than wide ; sides 

 nearly parallel from humeral angles to behind middle, then arcuately con- 

 verging to tips, which are separately narrowly rounded ; lateral margins coarsely 

 serrate ; basal depressions narrow and deep ; humeral depressions rounded and 

 moderately deep; surface glabrous, densely, finely punctate between costae. 

 Each elytron with four more or less distinct costae; first strongly elevated 

 from apex to basal third, then continuing as a smooth line to base ; second 

 distinctly elevated, extending from near base to posterior fovea, interrupted by 

 anterior fovea ; third slightly indicated in front of posterior fovea ; fourth only 

 indicated near apex ; and with two obcordate foveae, one at basal third inter- 

 rupting second costa, the other at apical third between second and fourth costae. 



Abdomen beneath rather densely fossulate-punctate, sparsely clothed with 

 long, recumbent hairs, without distinct, elevated, lateral callosities, intervals 

 nearly smooth ; basal sternite broadly depressed at middle : last visible sternite 



