Xanthophius janaki, Bordoni, 2017

Bordoni, Arnaldo, 2017, New data on the Afrotropical Xantholinini. 1. New species from South Africa in the Janak collection (Coleoptera, Staphylinidae) 285 ° contribution to the knowledge of the Staphylinidae, Linzer biologische Beiträge 49 (2), pp. 1233-1243 : 1234

Xanthophius janaki nov.sp. ( Figs 1-3 )

E x a m i n e d m a t e r i a l Holotype 3: RCA: W Cape, Mbotyi campsite env., 31.27S, 29.44E, J. Janak 1-3.XII.2006 (cJ); paratype: same data, 1♀ (cB).

D e s c r i p t i o n: Length of body 4.7 mm; from anterior margin of head to posterior margin of elytra: 2.4 mm. Body shiny, without micro-sculpture, reddish brown light with darker head and yellowish posterior margin of elytra; antennae and legs yellowish brown. Head sub-rectangular, proportionately large, convex, with sub-rectilinear and sub-parallel sides and largely rounded posterior angles. Eyes medium-sezed, visibly protruding. Surface of head with fine, deep, regular punctation. Pronotum dilated forward and narrow posteriad, longer than head, anteriorly as wide as it, with oblique anterior margins, largely rounded anterior angles and sinuate sides. Surface with dorsal series of 8 punctures and lateral series of 5-6 punctures. Elytra sub-rectangular, a little dilated posteriad, as long as pronotum, wider than it, with rounded humeral angles. Surface with very fine, sparse punctation, arranged in some series. Abdomen with fine punctation on the sides.

Tergite and sternite of the male genital segment as in Figs 1-2 . Aedeagus ( Fig. 3 ) 0.92 mm long, sub-spherical, with long parameres of peculiar shape; inner sac usually between the parameres, covered with numerous small spinulae, very dense in the middle.

E t y m o l o g y: Patronymic. Dedicatec to Jiri Janak which has collected almost all the specimens mentioned in this contribution.

D i s t r i b u t i o n: The species is known only from the type locality.

R e m a r k s: The species of the genus Xanthophius MOTSCHULSKY, 1858 that occurs in the Afrotropical Region are 4; one of these ( X. africanus BORDONI, 2016 ) occurs in South Africa (Zululand and Transvaal). The new species differs from this taxon by size, shape of head, punctation and especially by the very different genitalia. The genus is widespread in the Oriental Region ( BORDONI 2002) and less frequent in Australia (BORDONI 2005).

B i o n o m i c s: Stream banks.

Figures

Figs 1-6: Tergite and sternite of the male genital segment, aedeagus of Xanthophius janaki nov.sp. (1-3) and Notolinopsis janaki nov.sp. (4-6) (scale bar: 0.1 mm).