Couplet 34

34a:  Antenna situated adjacent to eye or laterally near base of short dorsoventrally flat rostrum; apex of third antennomere reaching well beyond front margin of eye; all tibia lacking spurs or spurs vestigial; notosternal sutures indistinct or obsolete.

Anthribidae  p. 451

34b:  Antenna situated distally on long, cylindrical rostrum; apex of third antennomere not or barely reaching front margin of eye; all tibia with spurs; notosternal sutures distinct.