Zyras (Zyras) parahirtus, Assing, 2017

Assing, Volker, 2017, On Zyras sensu strictu in the East Palaearctic and Oriental regions, with a focus on the faunas of the Himalaya, India, Sri Lanka, Thailand, and Sulawesi (Coleoptera: Staphylinidae: Aleocharinae: Lomechusini), Beiträge Zur Entomologie = Contributions to Entomology 67 (1), pp. 117-192 : 159

Zyras (Zyras) parahirtus spec. nov.

urn:lsid:zoobank.org:act:AF0B4E37-02D6-4618-A7C4-3D21FD8A5063

( Figs 227–228, 231–232 )

Type material: Holotype ♂: “ INDONESIA: Borneo, Kalimantan Tengah, Busang–Rekut confl., 0°03'S, 113°59'E / Flight intercept FIT 9, Brendell - Mendel, August 2001 / Barito Ulu 2001´, BMNH(E), 2001-191 / Holotypus ♂ Zyras parahirtus sp. n., det. V. Assing 2016” ( BMNH) . Paratypes: 2 ♀♀: same data as holotype (except “ FIT 2” and “ FIT 7”, respectively) ( BMNH, cAss) .

Etymology: The specific epithet (adjective) alludes to the external resemblance of this species to Z. hirtus .

Description: Body length 6.5–7.5 mm; length of forebody 3.0– 3.2 mm. Coloration: forebody dark-reddish to darkbrown, with the elytra at least slightly paler; abdomen dark-reddish, with most of tergite VI somewhat infuscate; legs dark-yellowish; antennae brown to dark-brown with the basal two antennomeres reddish and antennomere XI slightly paler brown; maxillary palpi reddish with the terminal palpomere yellowish.

Other external characters highly similar to those of Z. matangensis , except as follows:

Antenna 2.2–2.3 mm long. Tergites III–V with a transverse row of 4–6 setiferous punctures across middle and with 6–10 setiferous punctures at posterior margins, tergite V additionally with a lateral cluster of setiferous punctures on either side; tergites VI and VII with a transverse band of dense and moderately coarse non-setiferous punctures anteriorly and with sparser non-setiferous punctation on remainder of surface; posterior margin of tergite VIII ( Fig. 232 ) indistinctly concave in the middle.

♂: posterior margin of sternite VIII broadly convex; median lobe of aedeagus ( Figs 227–228 ) 0.9 mm long and robust; ventral process broadly triangular in ventral view; paramere ( Fig. 231 ) approximately 1.0 mm long and with moderately long apical lobe.

Comparative notes: This species is distinguished from the similar and geographically close Z. matangensis only by somewhat larger body size, darker coloration, a slightly different chaetotaxy of the abdomen, and particularly by an aedeagus with a larger median lobe, a ventral process of different shape (especially in lateral view), and a longer apical lobe of the paramere.

Distribution and natural history: The type material was collected with flight interception traps in Kalimantan Tengah, Borneo ( Indonesia).

3.5 Unnamed species

The examined material included females of several evidently undescribed species. Since males are often indispensible for a reliable identification of Zyras sensu strictu species, these species remain unnamed for the time being.

Figures

Figs 227–244: Zyras parahirtus (227–228, 231–232), Z. matangensis (229–230, 233), Z. gratellus (Sulawesi) (234–238), and Z. densissimus (239–244): median lobe of aedeagus in lateral and in ventral view (227–230, 234–235, 239–241); paramere (231, 236, 242); male tergite VIII (232, 237, 243); male sternite VIII (233, 238, 244). Scale bars: 227–233, 237–238, 243–244: 0.5 mm; 234–236, 239–242: 0.2 mm.