Nazeris latibasalis, Assing, 2016

Assing, Volker, 2016, A revision of Nazeris VIII. Five new species from China and additional records (Coleoptera: Staphylinidae: Paederinae), Linzer biologische Beiträge 48 (1), pp. 301-315 : 312-314

Nazeris latibasalis nov.sp. ( Figs 23-27 )

T y p e m a t e r i a l: Holotype 3: " CHINA: Sichuan Prov., 22 km NE Baoxing, Dengchigou Monastery , 13.VI.2014, 1800 m, 30°32'08''N, 102°56'28''E, / sift #18, secondary mixed forest with Cryptomeria and broadleaved trees, close to monastery, J. Hájek & J. Růžička leg. / Holotypus 3 Nazeris latibasalis nov.sp. det. V. Assing 2016" ( NMP) . Paratypes: 333, 2♀♀: same data as holotype ( NMP, cAss) ; 13, 2♀♀: " CHINA: Sichuan Prov., 22 km NE Baoxing, Dengchigou Monastery, 13.VI.2014, 1880 m, 30°32'08''N, 102°56'28''E, [sic] / sift #17, bamboo grove, below newly constructed road, 2 km N of monastery, J. Hájek & J. Růžička leg. ( NMP, cAss); 13: " CHINA: Sichuan Prov., Baoxing, 12.VI.2014, Wenxian Shan Park , above Panda Pavilon , 1200 m, 30°22'12''N, 102°48'57''E, / sift #14, mixed forest with Pinus, broadleaved trees; trunk bases, debris below small rock, J. Hájek & J. Růžička leg." ( NMP) .

E t y m o l o g y: The specific epithet (adjective) alludes to the basally distinctly dilated dorso-lateral processes of the aedeagus.

D e s c r i p t i o n: Body length 4.7-5.3 mm; length of forebody 2.5-2.8 mm. Coloration: forebody dark-brown; abdomen blackish-brown; legs and antennae yellowish.

Head ( Fig. 23 ) approximately as long as broad or weakly oblong; posterior angles broadly convex, practically obsolete; median portion of dorsal surface indistinctly elevated; punctation dense, moderately coarse, umbilicate, and not confluent. Eyes moderately small, approximately one-fourth as long as distance from posterior margin of eye to posterior constriction of head.

Pronotum ( Fig. 23 ) approximately 1.2 times as long as broad and 0.85-0.90 times as broad as head; punctation coarse, non-umbilicate, moderately dense, and somewhat irregularly spaced, postero-lateral portions with glossy, weakly elevated oblong patches; midline with short and narrow impunctate band posteriorly.

Elytra ( Fig. 23 ) short, approximately 0.5 times as long as pronotum; punctation coarse, denser than that of pronotum.

Abdomen approximately 1.2 times as broad as elytra; punctation very dense and coarse on tergites III-V, less dense and finer on posterior tergites; interstices with shallow microsculpture; posterior margin of tergite VII without palisade fringe.

3: sternite VII unmodified; sternite VIII ( Fig. 24 ) approximately as broad as long, posterior excision small, approximately one-nineth as deep as length of sternite; aedeagus ( Figs 25-27 ) aproximately 0.75 mm long; ventral process short, ventrally with a blunt median keel; dorso-lateral apophyses of moderate length, distinctly dilated in basal half, apically extending to apex of median lobe.

C o m p a r a t i v e n o t e s: Based on external characters and particularly on the morphology of the aedeagus (short ventral process with blunt median keel; dorso-lateral apophyses of moderately length), N. latibasalis belongs to the N. schuelkei group (see ASSING 2013b). It is readily distinguished from the other species of this group ( N. schuelkei ASSING, 2013 and N. wrasei ASSING, 2013 , both from Sichuan), as well as from other species recorded from Sichuan by the basally dilated dorso-lateral apophyses and by the small posterior excision of the male sternite VIII.

D i s t r i b u t i o n a n d n a t u r a l h i s t o r y: Nazeris latibasalis was collected in three geographically close localities near Baoxing, Sichuan, by sifting leaf litter and debris in mixed forests at alititudes of 1200-1880 m.

Figures

Figs 23-27: Nazeris latibasalis: (23) forebody; (24) male sternite VIII; (25-26) aedeagus in transparent light in lateral and in ventral view; (27) aedeagus in dry prepration in ventral view. Scale bars: 23: 1.0 mm; 24-27: 0.2 mm.