Baeocera, Erichson, 1845

López, Hugo Eduardo Fierros-, 2010, Description of Two New Species of Baeocera Erichson (Coleoptera: Staphylinidae: Scaphidiinae) from México, Journal Of The Kansas Entomological Society 83 (3), pp. 201-207 : 206-207

Key to the Mexican Species of Baeocera (based on descriptions provided by Löbl, 1992).

1 Scutellum covered by pronotal lobe............................. 2

Scutellum exposed, at least in apical portion....................... 5

2(1) Elytra maculate; basal stria of elytron interrupted at humeral area....................................... Baeocera pulchella new species

Elytra without maculation; basal stria of elytron entire, joined with lateral stria.................................................... 3

3(2) Second antennal segment longer than third; elytra with minute punctures similar to pronotal punctation................. Baeocera wheeleri Löbl

Second antennal segment similar in length to third or fourth; elytra punctures coarser than pronotal punctation....................... 4

4(3) Elytral punctation irregular, coarser at basal area.................................................. Baeocera irregularis Champion

Elytral punctation uniform................. Baeocera flagellata (Löbl)

5(1) Mesocoxal line parabolic..................................... 6

Mesocoxal line parallel...................................... 8

6(5) Third antennal segment smaller than fourth; second antennal segment subequal to combined length of third and fourth segment............. 6

Third antennal segment similar in length to fourth; second antennal segment subequal in length to third segment..... Baeocera major Matthews

7(6) First visible ventrite with elongated basal pits; metepisternon weakly widened apically........................ Baeocera gyrinoides Reitter

First visible ventrite with rounded basal pits; metepisternon conspicuously widened at apex.................... Baeocera punctipennis Matthews

8(5) Elytra with uniform coloration; second antennal segment subequal to combined length of third and fourth antennal segments............... 9

9(8) Mesocoxal line not reaching mesepimeron; first ventrite with microsculpture................................. Baeocera mexicana Reitter