. Bonn zoological bulletin. Zoology. 14 Volker Assing A â Xian. Fig. 50. Distributions of species of the N. longilobatus group (filled symbols) and of the N. cultellatus group (open symbols): N. acittus (filled diamond); N. clavatus (filled triangle); N. cultellatus (open triangles; records from Henan and Anhui not shown); N. compressus (open circle). Diagnosis. Nazeris huanghaoi is most similar to N longilobatus (see description above), but differs by slightly shorter elytra (approximately times as long as pronotum), the sparser punctation of the posterior ab- dominal tergites, the deepe
. Bonn zoological bulletin. Zoology. 14 Volker Assing A â Xian. Fig. 50. Distributions of species of the N. longilobatus group (filled symbols) and of the N. cultellatus group (open symbols): N. acittus (filled diamond); N. clavatus (filled triangle); N. cultellatus (open triangles; records from Henan and Anhui not shown); N. compressus (open circle). Diagnosis. Nazeris huanghaoi is most similar to N longilobatus (see description above), but differs by slightly shorter elytra (approximately times as long as pronotum), the sparser punctation of the posterior ab- dominal tergites, the deeper and narrower posterior exci- sion of the male sternite VIII (Fig. 47), and by the mor- phology of the aedeagus, particularly the less curved dor- so-lateral apophyses (Figs 48^19). Distribution and natural history. The species is endem- ic to the environs of the Taibai Shan in the Qinling Shan (Fig. 38), where it was collected in deciduous forests at elevations from approximately 1400 m up to 2065 m (Hu et al. 2010; material examined), in some localities togeth- er with N. shaanxiensis and/or N. cultellatus. Nazeris acutus sp. n. (Figs 50-55) Type material. Holotype S'- "CHINA: S-Shaanxi (Daba Shan), NW pass 25 km NW Zhenping, 32°01'N, 109°19'E, 2150 m, , leg. M. Schulke [C01- 09] / creek valley, young coniferous forest, moss (sifted) [CO 1-09] / Holotypus S Nazeris acutus sp. n., det. V Assing 2012" (cAss). Paratypes: 3<$, 1 $: same data as holotype (cSch, cAss); 1$: "CHINA (S-Shaanxi) Daba Bonn zoological Bulletin 62 (1): 1-29 Shan, NW pass 25 km NW Zhenping, 32°01 'N, 109°19'E, 2150 m (creek vail., young coniferous forest, moss) Wrase [09]" (cSch). Etymology. The specific epithet (Latin, adjective) refers to the conspicuously acute ventral process of the aedea- gus. Description. Small species; body length mm; length of forebody mm. Coloration: forebody brown to blackish-brown; abdomen dark-brown to
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