Gabrius, STEPHENS, 1829

Hromádka, L., 2011, Revision of the genus Gabrius STEPHENS 1829 from Madagascar and adjoining Islands (Coleoptera: Staphylinidae: Philonthina), Linzer biologische Beiträge 43 (2), pp. 1377-1397 : 1393

Key to the species of the genus Gabrius from adjoining Islands of Madagascar

1 Larger species, body length 5.8-6.8 mm .............................................................................2

- Smaller species, body length 4.5-5.2 mm ............................................................................3

2 Head and pronotum chocolate-brown, elytra and abdomen brown-red. Head slightly longer than wide (ratio 18.5: 17), pronotum wider than long (ratio 24: 18).......................... .......................................................................................................... G. gomyi LECOQ 1990

- Head, pronotum and abdomen black, elytra black-brown, head wider than long (ratio 27: 24), pronotum longer than wide .......................................... G. fauveli (COQUERL 1866)

3 Pronotum parallel-sided......................................................................................................4

- Pronotum distinctly narrowed anteriorly.............................................................................5

4 Head wider than long (ratio 18: 15), elytra and abdomen brown-black, antennae reaching midlength of pronotum when reclined................. G. oceanicus TOTTENHAM 1956

- Head as long as wide, whole body brown-red, antennae reaching posterior third of pronotum when reclined...................................................... G. fimbriolatus ERICHSON 1840

5 Eyes distinctly shorter than temples (ratio 3: 10), elytra slightly longer than wide (ratio 22: 20) ............................................................................................... G. macer LECOQ 1990

- Eyes almost twice shorter than temples (ratio 5: 9), elytra wider than long (ratio 23: 21) ............................................................................................ G. rabigoides JARRIGE 1957