194 MISC. PUBLICATION 47 0, U. S. DEFT. OF AGRICULTURE 



Figure 81. — Anterior tibia of male (A), clypeus (B), and last visible abdominal 

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



Male. — Moderately elongate, slightly convex above, rather strongly shining, 

 piceous, with a faint cupreous tinge ; beneath cupreous, with a vague greenish 

 reflection in certain lights, and more strongly shining than above. 



Head bronzy green, slightly cupreous, with a distinct, smooth, longitudinal 

 carina on occiput, and a distinct chevron on vertex ; front slightly, irregularly 

 depressed ; surface subopaque, sparsely, coarsely, irregularly punctate, sparsely 

 clothed with long, semierect, white hairs, intervals densely grauulose ; clypeus 

 deeply, broadly, angularly emarginate in front, arcuately rounded on each side. 

 Antenna uniformly coppery bronze, robust, strongly narrowed to apex ; inter- 

 mediate segments compact, as long as wide, broadly truncate at outer margins ; 

 third segment as long as the following two segments united. 



Pronotum nearly twice as wide as long, wider at apex than at base, widest 

 near apex; sides arcuately converging at apices, strongly, obliquely converging 

 from near apices to posterior angles ; anterior margin broadly, arcuately emar- 

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

 lobe moderately produced, truncate in front of scutellum ; disk uneven, slightly 

 convex, with a broad, deep, median sulcus, limited on each side by a broad, 

 elongate, smooth space, and on each side a broad, irregular depression, with an 

 oblique, smooth callosity in front of middle ; surface finely, rather densely punc- 

 tate in median sulcus, coarsely, confluently punctate toward sides, sparsely 

 clothed with a few long, recumbent hairs. 



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

 parallel from humeral angles to apical third, then obliquely converging to 

 tips, which are separately narrowly rounded; lateral margins coarsely serrate: 

 basal depressions broad and deep; humeral depressions broad and shallow; 

 disk uneven, moderately convex ; surface glabrous, finely, densely punctate 

 between the smooth spaces. Each elytron with distinct, smooth costae; first 

 parallel with sutural margin, strongly elevated posteriorly, dilated on basal 

 half; second and third interrupted by the broad, shallow foveae, and dilated 

 into more or less confluent, smooth spaces; fourth narrow, slightly elevated, 

 following outline of lateral margin. 



Abdomen beneath sparsely, finely fossulate-punctate, sparsely clothed with 

 short, recumbent, white hairs, without distinct, elevated, smooth, lateral 

 callosities, intervals nearly smooth, last visible sternite broadly, semicircularly 



