Couplet 150
150a: Antenna long, reaching to or beyond middle of pronotum, club loose; pronotum usually with pair of sublateral discal carinae or grooves, running from base laterad of basal pits (Figure 26-59C); body usually round to ovoid Endomychidae p.433
150b: Antenna short, not reaching beyond middle of pronotum, club compact; if pronotum with discal carinae or grooves, then usually in the form of a median groove or pit and body elongate
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