Couplet 73

73a:  Abdomen with 6 ventrites; head narrowed immediately behind eyes, lacking temples; fore coxal cavity open; lateral margin of pronotum coarsely dentate; trochantin exposed; mid coxal cavity open (Dasycerus)

Staphylinidae   p. 409

73b:  Abdomen with 5 ventrites; head behind eyes with distinct temple; fore coxal cavity open or closed; lateral margin of pronotum simple to finely dentate or absent; trochantin concealed; mid coxal cavity variable