Gabrius fauveli ( COQUEREL 1866)

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 : 1381-1382

Gabrius fauveli ( COQUEREL 1866) (Figs 10-12)

Philonthus colubrinus FAUVEL 1868: 70 . Synonymized by BERNHAUER & SCHUBERT 1914: 337.

T y p e m a t e r i a l e x a m i n e d

A d d i t i o n a l m a t e r i a l e x a m i n e d: RÉUNION, Route de Maido 1600-1700 m, 7- 12.i.1992, J. Janák lgt., Gabrius fauveli (Coquerel) J. Janák det. 1992, (cJRC).

R e d e s c r i p t i o n: Body length 6.8 mm, length of fore body (to end of elytra) 3.7 mm. Head, pronotum, scutellum and abdomen black, elytra black-brown, maxillary, labial palpi and legs brown, antennomeres 1-2 and base of antennomere 3 brown-yellow, remaining antennomeres dark.

Head slightly trapezoidal, wider than long (ratio 27: 24), Clypeus with relatively deep rounded depression medially. Posterior angles indistinct, bearing one long black bristle. Between eyes 4 punctures arranged in a straigth line, distance between medial punctures four times as large as distance between medial and lateral puncture. Eyes small, very slightly convex, distinctly shorter than temples (ratio 7: 12), posterior margin with three coarse punctures, temporal area with several variably large punctures. Middle of head with several coarse punctures in the shape of semicircle. Surface with fine microsculpture consisting of transverse waves.

Antennae slender, reaching posterior fourth of pronotum when reclined. Antennomeres 1-6 and 11 distinctly longer than wide, antennomeres 7-8 as long as wide, antennomeres

9-10 slightly wider than long, antennomere 1 twice longer than antennomere 11, antennomere 2 slightly shorter than antennomere 3.

Pronotum highly convex, parallel-sided, longer than wide (ratio 26: 22), anterior angles conspicuously deflexed, vaguely obtusely rounded, bearing several variably long bristles. Each dorsal row with six coarse, approximately equidistant punctures, each sublateral row with two coarse punctures, puncture two distinctly shifted to the lateral margin. Sides with several bristles. Surface with fine microsculpture similar to that on head.

Scutellum in the middle with several coarse punctures, diameter of punctures larger than eye-facets, separated smaller than one puncture diameter in transverse direction. Sides impunctate.

Elytra slightly longer than wide (ratio 34: 32) very slightly widened posteriad. Punctation coarser than that on elytra, diameter of punctures larger than on scutellum, separated by one or one and half puncture diameters. Surface lacks microsculpture; setation dark.

Legs. Metatibia longer than metatarsus (ratio 20: 17), metatarsomere 1 shorter than metatarsomere 5, slightly longer than metatarsomere 3.

Abdomen very gradually narrowed posteriorly. Punctation at base of all tergites denser and finer than that on elytra, becoming sparser towards posterior margin of each tergite. Surface without microsculpture; setation similar to that on elytra.

C o m p a r a t i v e n o t e s G. fauveli may be separated from G. ingratus by the slender antennae, paler antennomeres 1-2, denser and extensiver punctation of scutellum, sparser punctation of elytra and by the different shape of the aedeagus.

D i s t r i b u t i o n: Réunion ( HERMAN 2001).