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Couplet 165
165a: Body shining, oval and strongly convex; pronotum tightly embracing elytra (Figure 26-59A), pronotum laterobasally with a translucent, thin flange that slides over a smooth area on base of humeral angle of elytron, this area on elytron delimited posteriorly by a thin carina; pronotum and elytra with wide propleura and epipleura, lateral margins sharp, explanate, strongly directed ventrally so that lateral margins far below level of fore coxa and mesad of epipleural margin, dorsal surface forming an inverted U in transverse section; pretarsal claw-toothed or appendiculate Phalacridae p.431
165b: Body usually not so evenly oval; pronotum not as in preceding entry; lateral margins of pronotum and elytra laterad, not ventrad, of fore coxa and epipleura; pretarsal claws toothed only in groups with pronotum narrowed behind
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