Couplet 65

65a:  Hind tibial spurs almost equal in length; small (1-6 mm), round to elongate-oval, shining, granulate or transversely strigulate (stripes) beetle; elytra glabrous or pubescent, striate or not; prothorax as broad as elytra; fore coxa strongly projecting and constricted by coxal cavity; often capable of retracting into a ball shape by curling head and prothorax under body; antenna distinctly clubbed, often with 11 antennomeres, 5 of which are involved in club and antennomere 8 smaller than 7 or 9.  Some genera with 10 or 11 antennomeres and with distinct club of 3 or 4 antennomeres; those with flattened, externally flanged hind femur, apical portion excavate to receive tibia; tarsi formula highly variable, 3-3-3, 4-4-4, 5-4-4, 5-5-4, or 5-5-5; one genus (Colon) with 11 antennomeres and somewhat gradually clubbed antenna that lacks small eighth antennomere, elytra pubescent, with characteristic shape and sutural stria (see also Couplet 124)

Leiodidae   p.408  (see footnote in textbook, p.385)

65b:  Hind tibial spurs distinctly unequal; moderately sized (4-11 mm), somewhat flattened shining beetles; elytra striate and glabrous; pronotum somewhat narrowed relative to elytra; fore coxa strongly projecting or transverse; body not retractile; antenna long, club loose and indistinct, eighty antennomere never smaller than 7 and 9; femur simple; tarsi 5-5-5

Agyrtidae  p.408