Nazeris conicus, Assing, 2014

Assing, Volker, 2014, A revision of Nazeris. VI. On the fauna of East Yunnan, China (Coleoptera: Staphylinidae: Paederinae), Beiträge Zur Entomologie = Contributions to Entomology 64 (2), pp. 355-373 : 372

publication ID 10.21248/contrib.entomol.64.2.355-373

persistent identifier

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scientific name

Nazeris conicus

sp. n.

Nazeris conicus sp. n.

( Figs 68–75 View Figs 59–75 , Map 3 View Map 3 )

Type material: Holotype ♂: “ CHINA [9] – Yunnan, mt. W Xundian, 2300 m, mixed for., 25°34'58"N, 103°08'42"E, sifted, 15.VIII.2014, V. Assing / Holotypus ♂ Nazeris conicus sp. n., det. V. Assing 2014” (cAss). GoogleMaps

Paratypes: 5 ♂♂, 7 ♀♀ [1 ♂, 4 ♀♀ teneral]: same data as holotype (cAss, MNHUB) GoogleMaps ; 1 ♀: same data, but leg. M. Schülke (cSch) GoogleMaps ; 1 ♂: “ CHINA [9b] – Yunnan, mt. W Xundian, 2300 m, mixed for., 25°34'58"N, 103°08'42"E, sifted, 16.VIII.2014, V. Assing” (cAss) GoogleMaps .

Etymology: The specific epithet (Latin, adjective) alludes to the conical shape of the ventral process (ventral view).

Description: Species of relatively small size; body length 4.5–5.6 mm; length of forebody 2.5–2.8 mm. Forebody as in Fig. 68 View Figs 59–75 . Coloration: body blackish, with the head sometimes slightly paler (dark-brown to blackish-brown) and with the abdominal segments IX–X dark-brown and the posterior margins of segments VII and VIII reddish-brown. Abdominal tergites VII and VIII without microsculpture; posterior margin of tergite VIII weakly convex. Other external characters as in N. clavilobatus and N. bulbosus .

♂: sternite VII ( Fig. 69 View Figs 59–75 ) moderately transverse, 1.50–1.55 times as broad as long, with sparse pubescence, without evident modifications; sternite VIII ( Figs 70–71 View Figs 59–75 ) usually weakly transverse, 1.00–1.08 times as broad as long, posterior excision V-shaped and 0.21–0.23 times as deep as length of sternite; aedeagus ( Figs 72–75 View Figs 59–75 ) 0.90–0.93 mm long; ventral process rather slender in ventral view, laterally not compressed; dorsolateral apophyses stout, strongly curved (ventral view), strongly sclerotized, and moderately long, extending beyond apex of ventral process.

Comparative notes: Regarding the morphology of the aedeagus, N. conicus is highly similar to N. clavilobatus , from which it differs by slightly larger average size, darker coloration, the absence of microsculpture on the abdominal tergites VII and VIII, the anteriorly more acute posterior excision of the male sternite VIII, and by the smaller aedeagus (despite larger average body size) with a conically shaped (i.e., medially broader and apically more distinctly tapering) ventral process (ventral view). The observed differences are not very pronounced, but apparently constant. However, material from the region between the type localities of N. conicus and N. clavilobatus , which are separated by approximately 65 km, would be needed to confirm the hypothesis that they represent distinct species.

Distribution and natural history: The type locality is situated in a mountain to the west of Xundian, approximately 70 km to the northeast of Kunming, in eastern Yunnan ( Map 3 View Map 3 ). The specimens were sifted from litter (partly with twigs) and the roots of herbs in a mixed forest with alder, pine, and shrub undergrowth at an altitude of 2300 m. Several paratypes are teneral.


Royal British Columbia Museum - Herbarium