Hexarhopalus (Hexarhopalus) sculptilis KASZAB, 1960

Ren, G. & Xu, J., 2011, The Genus Hexarhopalus Fairmaire, 1891 In China, With Description Of Three New Species (Coleoptera, Tenebrionidae: Cnodalonini), Acta Zoologica Academiae Scientiarum Hungaricae 57 (1), pp. 23-34 : 25-27

Hexarhopalus (Hexarhopalus) sculptilis KASZAB, 1960

Hexarhopalus sculptilis KASZAB, 1960: 288 (with photo of habitus).

Leprocaulus (Apterolepro caulus) sculptilis ( KASZAB, 1960) : KASZAB, 1983:183.

Hexarhopalus (s. str.) sculptilis KASZAB, 1960 : BEČVÁŘ & PURCHART 2008: 41.

Type locality. Myanmar: Ruby Mts .

Material examined. 1 male, 1 female, CHINA: Yunnan Province, Ruili, Huyu , 10 April 1981, Zhenghui Xu leg. , 1 male, CHINA: Yunnan Province, Yingjiang County, 20 June 1995, alt. 1750 m, Zhenghui Xu leg.

Distribution. Myanmar: Ruby Mts, China: Yunnan.

Remark. This species is recorded from China for the first time.

Hexarhopalus (Hexarhopalus) mangshanicus sp. n.

( Figs 1–7 , 17 )

Material examined. Holotype: male, CHINA: Hunan, Mangshan , 800 m, September 1960, collector unknown. Paratypes: 1 male, 1 female, same data as holotype .

Description. Male ( Fig. 17 ). Body elongate oval (length 14.5–16.8 mm, width 5.5–6.0 mm), more or less convex, dull-shiny; brown, head black, elytra, pronotum and apical half of femora brown-black, labrum, basal half of femora, tibiae and tarsi brown-red. Hind wing absent.

Head finely and simply punctate, 0.71–0.73 (0.72 on average, n = 2) times as wide as pronotum. Punctures on genae and anterior half of clypeus denser than those on frons. Frontoclypeal suture well developed, reaching anterior margin of clypeus. Ocular sulcus only moderately developed at inner side of eyes. Distance between eyes 2.33–2.67 (2.50 on average, n = 2) times as wide as the transverse diameter of an eye (in dorsal view). Labrum transverse, covered with long yellow setae anteriorly and laterally. Ventral side of head shiny, shagreened, wrinkled and microscopically pubescent. Antennae ( Fig. 1 ) 1.40–1.43 (1.42 on average, n = 2) times as long as pronotum, slightly filiform, gently pubescent; four distal segments with shallow sensory pores, more densely pubescent than basal ones; 8th to 10th slightly dilated; terminal segment drop-shaped; ratio of the length (width) of 2nd–11th segments 6 (8):22 (8):16 (8):16 (8):16 (8):16 (8):15 (11):13 (12):12 (12):17 (13). Mentum obtrapezoidal, irregularly and coarsely punctate, with a tubercle-like elevation in middle which is directed forwards, each lateral side of the elevation with a deep groove.

Pronotum globular, 1.02–1.04 (1.03 on average, n = 2) times as long as wide, broadest at anterior third, weakly shiny, microscopically pubescent, densely and moderately punctate, with a large longitudinal swelling on each side from anterior angle to near base, each swelling with a deep oblique depression extending posterolaterally from the middle part to near lateral margin; lateral carina not developed; oblique indentation in posterior angles large and deep, becoming deep lateral groove and reaching anterior angles, then the groove bent in rounded obtuse angle towards the middle and connecting to each other at the middle of anterior margin; in this way, anterior margin completely rimmed; posterior margin with deep groove connected with the beginning of oblique indentation and provided posterior rim of pronotum; longitudinal groove present, gradually broadened and deepened from the anterior margin to the base; prothoracic hypomeron slightly shagreened, only finely wrinkled in posteriorlateral parts; prosternum finely wrinkled, weakly shiny; prosternal process shiny, finely punctate, with medio-longitudinal groove between coxae. Scutellum linguiform.

Elytra ovoid, slightly dilated posteriad, broadest at apical third, weekly shiny, 1.64–1.71 (1.68 on average, n = 2) times as long as its width, 2.20–2.25 (2.23 on average, n = 2) times longer and 1.32–1.43 (1.38 on average, n = 2) times wider than pronotum; sides gradually broadened from base to apical third, thence arcuately narrowed to the apex; apical declivity moderately steep; base nearly as wide as that of pronotum, carinate, without developed shoulders; disc with regular rows of more or less foveolate punctures; interstices clearly carinate, shiny and undulate, without transverse wrinkle connecting interstices; scutellary striole short.

Mesosternum finely punctate, weakly shiny, wrinkled. Metasternum 0.90–0.91 times (0.91 on average, n = 2) as long as mesocoxa, strongly punctate and shagreened.

Legs shiny, finely punctate and microscopically pubescent; apical parts of tibiae and tarsi with yellow-brown setae ventrally; femora pedunculate, all tibiae slightly thickened apically, protibiae gently curved, mesotibiae nearly straight, metatibiae slightly sinuous.

Abdomenal sternites finely punctate, shiny, covered with extremely microscopical pubescence, 1st to 3rd visible sternites wrinkled, each lateral side of the first and second visible sternites with a rounded shallow depression. Abdominal sternite VIII ( Fig. 5 ) entirely densely covered with fine setae, forming deep angulate emargination at apical margin. Apical margin of epiproct straight.

Aedeagus ( Figs 2–4 ) curved at base in lateral view, length 2.3 mm, width 0.5 mm; parameres short (length 1.1 mm, width 0.4 mm), regularly curved in apical part in lateral view. Spiculum gastrale ( Fig. 6 ) relatively short, with large apical lobes.

Female. Body length 16.6 mm, width 6.0 mm. Frons with a shallow impression at the middle. Ovipositor ( Fig. 7 ) consists of paraprocts and coxites; paraprocts partly enclose the base of coxites, baculi of the paraprocts nearly transverse; coxites 4-lobed, the fold between lobes 3 and 4 fine; basal lobe with a pair of longitudinal baculi, elongate (length 1.66 mm), 2.37 times as long as three apical lobes combined; gonostyles with apices bearing a few cerci, attached dorsolaterally to coxites; spiculum ventrale with well-developed median shaft.

Etymology. The specific name is derived from the type locality Mangshan National Forest Park, Yizhang County, Hunan Province.

Remark. This new species is similar to H. sculpticollis FAIRMAIRE, 1891 and H. problematicus BEČVÁŘ et PURCHART, 2008 , but differs from the both species by elytral interstices clearly carinate and undulate, from H. sculpticollis by the anterior margin of pronotum completely rimmed, from H. problematicus by the pronotal oblique indentation in posterior angles smoothly continuing as lateral groove.

Distribution. China: Hunan.

Figures

Figs 1–7. Hexarhopalus (s. str.) mangshanicus sp. n., male:1 = left antenna, dorsal view, 2–4 = aedeagus, ventral (2), dorsal (3) and lateral (4) view, 5 = abdominal sternite VIII, ventral view, 6 = spicu- lum gastrale, dorsal view; female: 7 = ovipositor, dorsal view. Scales: 1 mm

Figs 17–18. Hexarhopalus spp. 17 = H. (s. str.) mangshanicus sp. n. 18 = H. (Leprocaulus) bisinuatus sp. n.