330 



Journal of Agricultural Research voi. xxn.N>. e 



ADULT (fig. 3) * 



Oval to oblong-oval, brownish to piceous black, thoracic and elytral margins very- 

 broad and foliaceous, strongly reflexed. 



Head small, less than twice as wide as long, plane, sides of the frons slightly promi- 

 nent, punctate, punctures very feebly subasperate, fine, not dense, each with a small 

 curved and short seta, frontal suture usually not visible. Antennce rather long, quite 

 slender, outer four joints very slightly compressed and scarcely widened, tliird joint 

 shorter than the next two taken together, fourth scarcely longer than the fiftli, the 

 latter and sixth subequal, seventh shorter, eighth feebly shorter than the seventh 

 and slightly triangular, ninth and tenth suborbicular, eleventh subovate. 



Pronotum with margins very broadly foliaceous, the margin more than one-half 

 wider than the disc, the latter comparatively narrow, longer than wide at middle, very 



feebly convex, usually with irregular de- 

 pressed areas; finely, more or less subas- 

 perately and sparsely punctate; reflexed 

 margins wider posteriorly and more or less 

 concave, a little more distinctly punc- 

 tate, punctures less sparse, each with a 

 short curved seta; o/>ex deeply and feebly 

 subquadrately emarginate, the emargina- 

 tion about one-half wider than deep, sides 

 almost parallel, and scarcely margined; 

 sides evenly but not strongly arcuate, 

 moderately converging from base to apex; 

 base proper feebly arcuate, not margined 

 and about equal to the length, 1^.' ,rally 

 sinuate; apical angles rather narrowly 

 rounded and formed by the advanced 

 foliaceous margins and nearly as long as 

 the head; basal angles are posteriorly 

 prominent, subacute, and projecting back- 

 ward over the basal angles of the elytra. 

 Propleurcc smooth and impunctate; in- 

 ferior surface of the foliaceous margins 

 obsoletely punctate. 



Elytra oval to elongate oval; margins 

 broad andreflexed, angles at humeri nearly 

 rectangular and more or less truncate at base, posteriorly extending beyond the apex, 

 the two meeting on a line with the suture above the true elytral apex, and defined 

 from the same by a slight groove, borders evenly arcuate from base to apex or more 

 or less parallel basally ; base evenly but not strongly emarginate; humeri proper broadly 

 rounded and not prominent ; sides proper more or less evenly arcuate ; apex proper not 

 produced and narrowly rounded; disc plane, feebly convex, at times slightly concave, 

 the inflexed sides nearly straight and oblique, gradually and not strongly arcuately 

 declivous behind; surface sculptured with approximate series of fine asperate punc- 

 tures, which become more irregular and slightly denser laterally. Each puncture 

 bears a short and ratlier robust cur\'ed seta. 



Epipleurce narrow, not attaining the humeral margin and not dilated, but gradually 

 narrowing to apex, not defined from the inflexed sides of the elytra, and on the same 

 plane; superior margin obsolete, except near apex; elsewhere represented by a line 

 of punctures or a faint groove. 



Fig. 3. — Adult of Embapkion tnurkalum, dorsal view. 



^Reprinted from F. E. Blaisdell (//, p. 473-476). 



