5(4). Large (standardized body length generally more than 6.2 mm) and shiny, with wide body. Prothorax wide at base, with sides little sinuate. Mentum tooth large, bulbous, rectangular, without distinct epilobes .......................................B. punctatostriatum SayClick on an image to view larger version & data in a new window5'. Smaller (standardized body length generally less than 6.2 mm) and in most specimens duller. Body proportions more normal, not atypically wide. Prothorax more constricted near base. Mentum tooth smaller, flatter, triangular or trapezoidal, epilobes distinct ..............................6
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