Pediacus sinensis Marris & Ślipiński, 2014

Marris, John W. M. & Ślipiński, Adam, 2014, A revision of the Pediacus Shuckard 1839 (Coleoptera: Cucujidae) of Asia and Australasia, Zootaxa 3754 (1), pp. 32-58 : 51-52

Pediacus sinensis Marris & Ślipiński , sp. nov.

Figs. 9 A–D.

Diagnosis. Recognisable by the combination of the following characters: body with head and disc of pronotum distinctly darker in colouration, eyes small and weakly projecting, ocular denticle present; male genitalia with short, globular parameres.

Description. Body length 3.8–4.2 mm (n=7), elongate, 3.04× longer than wide; colour red-brown, often with basal half of head and disc of pronotum distinctly darker; pubescence long, pale appressed and conspicuous; surface moderately glossy. Head transverse, 1.77× wider than long; puncturation weakly impressed and sparse medially, increasing in size and density laterally with punctures separated by about their diameter; setae long and appressed, conspicuous; microsculpture absent, surface glossy; eyes small, weakly projecting, ocular index 0.75, finely faceted, distinct postocular denticle present, often weakly developed; antennae as in Fig. 9 B, antennomere VII larger than VI and VIII. Pronotum transverse, 1.28× wider than long, widest at about anterior 1/3, sides subparallel; lateral margins explanate and reflexed, anterior and antero-medial denticles small and broadly obtuse, postero-medial and posterior denticles more prominent, narrowly obtuse to acute; disc moderately to weakly impressed; puncturation, setation and microsculpture as for head, impunctate median strip faintly visible in basal 1/ 3 to absent. Elytra elongate, 2.09× longer than wide, sides subparallel, epipleura weakly explanate; puncturation moderately dense but weakly impressed basally, becoming more dense laterally; setation long, appressed and conspicuous; microsculpture coriaceous. Genitalia for male as in Fig. 9 D, parameres small, globular and strongly narrowed basally; internal sac with faint tooth-like projections basally and a strongly sclerotized apical section.

Type material. Holotype (male): “ CHINA, YUNNAN prov. 18.6.– 4.7.1993 HEISHUI = 35km N Lijiang 27, 13 N; 100, 19 E lgt. S. Becvar // HOLOTYPE Pediacus sinensis Marris & Ślipiński 2013 ”. Specimen on card point with genitalia mounted in DHMF on card below; deposited in NHMB.

Paratypes. CHINA: CHINA, YUNNAN prov. 18.6.– 4.7.1993 HEISHUI = 35km N Lijiang 27, 13 N; 100, 19 E lgt. S. Becvar (7, NHMB); CHINA, YUNNAN prov. 1.– 19.7.1992 HEISHUI 35km N LIJIANG 27, 13N; 100, 19E lgt. S. Becvar (5, NHMB); China Yunnan , 1800m LIJIANG 23.6.–21.7. 26.53N 100.18E lgt. S. Becvar 1992 (2, NHMB); CHINA, NW. YUNNAN prov., Baishuitai (San Ba terrasses [sic]) 2600m, 4–6.VI.2006 S. Murzin & I. Shokhin leg. (1, SMNS); CHINA-Yunnan 24.– 29.6. 50 km N Lijiang, 1993 Yulongshan Nat. Res. E. Jendek & O. Sausa leg. (3, NHMW); CHINA, Sichuan prov., 50 km W Dayi, Xiling Shan 2300 m, 5.–8.V.2006, leg. S. MURZIN & I. SHOKHIN (3, SMNS); CHINA: Border Shaanxi–Sichuan (Daba Shan), pass 20 km SSE Zhenping, 1700–1800 m, 31˚ 44' N, 109˚ 35' E, 12.VII 2001, leg. M. Schülke, mixed forest, small creek valley, moss, bark (sifted) [C01-07C] (1, CRS); China Yunnan, 1–19.VII. HEISHUI 27.13N 100.19E 35 km N of Lijiang lgt. S. Becvar 1992 (1, CRS).

Distribution. China (Yunnan, Sichuan, Shaanxi Provinces).

Etymology. This species is named for its place of origin, China.

Figures

FIGURE 9. Pediacus species: (A – D) P. sinensis sp. nov.; (E – H) P. smirnovi Nikitsky and Belov. (A, F) Head and pronotum; (B, E) antenna; (C, H) dorsal habitus; (D, G) aedeagus.