Gabrius delamarei JARRIGE 1970

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 : 1380-1381

Gabrius delamarei JARRIGE 1970 (Fig. 9)

T y p e m a t e r i a l e x a m i n e d Holotype: ″ Madagascar, Haut Sambirano , 1000m, x.1949, Ondat, // Gabrius delamarei J. Jarrige, 1968 , TYPE // [white oblong label, handwritten]″ ( MNHN).

R e d e s c r i p t i o n: Body length 5.6 mm, length of fore body (to end of elytra) 3.1 mm. Head, pronotum and elytra black, maxillary and labial palpi brown-black, antennae black-brown, terminal antennomere paler, legs yellow-brown, tibiae vaguely darker.

Head slender (Fig. 9), as long as wide, vaguely narrowed posteriorly, posterior angles markedly rounded. Eyes small, much shorter than temples (ratio 5: 12). Between eyes 4 punctures, medial punctures slightly shifted anteriorly. Distance between medial punctures about 5 times as large as distance between medial and lateral puncture. Posterior margin of eyes with 2 coarse setiferous punctures. Temporal area with several coarse setiferous punctures. Surface with very fine microsculpture.

Antennae gradually widened distally, reaching posterior fourth of pronotum when reclined Antennomeres 1-3 and 11 longer than wide, antennomeres 5-10 as long as wide.

Pronotum distinctly longer than wide (ratio 22: 13), parallel-sided. Anterior angles indistinct, bearing several varying long bristles, posterior angles markedly rounded, sides with several bristles. Each dorsal row with 5 punctures, punctures 2-5 equidistant, distance between punctures 1 and 2 longer than distance between previous punctures. Each sublateral row with 2 punctures, puncture 2 situated behind level of puncture 3 in dorsal row. Surface with microsculpture similar to that on head.

Surface of scutellum with scattered very fine punctures, diameter of punctures as large as eye-facets, separated by two or three puncture diameters in transverse direction.

Elytra as long as wide, slightly widened posteriorly. Punctation very coarse and sparse. Punctures larger than eye-facets, separated by two puncture diameters in transverse direction. Sides and posterior margin bearing several black bristles. Surface without microsculpture; setation greyish.

Legs. Metatibia longer than metatarsus (ratio 18.5: 16), metatasomere 1 as long as metatarsomere 5.

Abdomen wide, from visible tergite III slightly narrowed anteriorly and posteriorly. Punctation at base of all visible 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. delamarei may be distinguished from the similar G. taphozous nov.sp. by the narrower head, shorter eyes and by the different shape of the aedeagus.

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