Morphostenophanes tuberculatus, Gao & Ren, 2009

Gao, Z. & Ren, G., 2009, Taxonomy Of The Genus Morphostenophanes Pic From China, With Two New Species (Coleoptera, Tenebrionidae), Acta Zoologica Academiae Scientiarum Hungaricae 55 (4), pp. 307-319 : 315-318

publication ID	https://doi.org/ 10.5281/zenodo.12584668
persistent identifier	https://treatment.plazi.org/id/023E560F-CE5C-FFD9-FD9A-4D4BFCF6FA2D
treatment provided by	Felipe
scientific name	Morphostenophanes tuberculatus
status	sp. nov.

Treatment

Morphostenophanes tuberculatus sp. n.

( Figs 31–38 View Figs 31–38 , 40 View Figs 39–43 )

Description. Male ( Fig. 40 View Figs 39–43 ). Brassy, head, pronotum, elytra, scutellum and ventral surface strongly with metallic lustre, the tubercles of elytra in part also feebly and cupreously shining; antennae, mouthparts, apex of femora, dorsal surface of tarsi nearly black, slightly shining; basal portions of femora and claws more or less reddish brown; dorsal and ventral surfaces of body nearly glabrous, weakly covered with isodiametric microsculpture. Body elongate, length 15.5 mm, width 6.0 mm, strongly convex dorsad, noticeably constricted between pronotum and elytra. Hind wings absent.

Head ( Fig. 31 View Figs 31–38 ) transversely subquadrate, densely scattered with small punctures, with outer margin obviously notched between genae and clypeus; labrum transversely elliptical, sparsely with long golden hairs on dorsal surface, densely with short golden hairs in middle of apex; clypeus transview. Scales: 1 mm

43 = M. atavus (KASZAB) , female, collected from Yingjiang County versely subhexagonal, slightly inclined downwards, emarginate in middle of apex, gently depressed in antero-lateral parts; fronto-clypeal border widely U-shaped and sulcate, the sulcus becoming weaker laterad and reaching outer edges; genae gently raised, roundly produced laterad, less prominent laterad than eyes, depressed in interior parts of preocular areas, postgenae slightly produced, less prominent laterad than eyes; frons slightly convex, steeply inclined forwards; eyes transversely elliptical, gently convex laterad, interspace between eyes about 2.6 (n = 1) times as wide as the transverse diameter of an eye; vertex irregularly wrinkled, weakly and longitudinally impressed in middle. Antennae ( Fig. 33 View Figs 31–38 ) subfiliform, reaching basal 2/11 of elytra; each segment weakly thickened towards apex; 2nd segment shortest, terminal one somewhat oblong-ovate; apical segments with dense hairs; relative length of each segment from base to apex: 0.60: 0.26: 0.77: 0.76: 0.79: 0.83: 0.87: 0.76: 0.80: 0.77: 0.93. Terminal segment of maxillary palpus triangular, with golden hairs; apex nearly straight.

Pronotum ( Fig. 32 View Figs 31–38 ) quadrate, 1.2 (n = 1) times as wide as long, widest a little before the middle; apex almost straight, weakly curved forwards at sides, distinctly rimmed; base nearly straight, clearly rimmed, the rim a little thinner than that of apex; sides steeply sloping towards lateral margins, lateral margins finely rimmed, weakly concave in middle; anterior angles rounded, posterior angles obtusely angulate with rounded corners; disc strongly convex, less densely scattered with very small punctures than those in head, finely impressed in middle and basal parts. Prosternum noticeably wrinkled, prosternal process strongly raised between coxae, then precipitously deflexed, apex gently dilated, with golden hairs; propleuron rugulose. Scutellum triangular, rather flattened, sparsely punctate.

Elytra elongate, 1.8 (n = 1) times as long as wide, 2.8 (n = 1) times the length and 2.3 (n = 1) times the width of pronotum, widest at basal 6/11, gently convex near humeri, slightly dehiscent at apices; dorsum strongly convex, sparsely and minutely punctate, with irregular rows of tubercles; base nearly straight, subequal in width to pronotum at base; sides steeply declined to lateral margins.

Mesosternum transversely wrinkled, sparsely with golden hairs; metasternum slightly convex, noticeably and transversely wrinkled in apical parts. Abdomen closely scattered with small punctures; four basal sternites gently and longitudinally wrinkled basally; anal sternite rounded at apex, finely sulcate along outer margin, the sulcus widely interrupted in middle.

Legs ( Figs 34–36 View Figs 31–38 ) slender, tibial calcaria smaller and hidden in golden setae, empodium with long hairs on it, terminal segment of tarsi ventrally with a lamella at apex. Profemora gently thickened in middle, emarginate at apex of anterior margins, mesofemora weakly thickened in middle, meso- and metafemora gently slenderer than profemora, with posterior margins emarginate at apex; inner margins of tibiae grooved and pubescent nearly in apical 1/2 of protibiae or in apical 6/11 of meso- and metatibiae, pro- and mesotibiae slightly curved at apex, metatibiae almost straight; protarsi with 3 basal segments strongly widened to each apex, 4th segment slightly widened to apex, mesotarsi moderately and metatarsi weakly widened to each apex; ratios of the lengths of pro-, meso- and metatarsal segments from base to apex: 0.55: 0.41: 0.40: 0.36: 1.33; 1.07: 0.61: 0.46: 0.39: 1.45; 1.46: 0.73: 0.58: 1.51.

Male genitalia ( Figs 37–38 View Figs 31–38 ) elongated subfusiform, slightly curved in lateral view, 5.20 mm in length, 0.79 mm in width; parameres fused with each other, 1.58 mm in length, 0.42 mm in width, strongly narrowed from apical 3/5 to apical 1/4, apex distinctly flabellate, densely scattered with minute tubercles.

Type material. Holotype male, CHINA: Yunnan Province, Lushui County, Pianma, Yakou , 19 May 2005, Xiao-Hong Ou leg.

Etymology. This new species is named after the particular tubercles on elytra.

Diagnosis. This new species and M. tanikadoi MASUMOTO, 1998 , M. jendeki jendeki MASUMOTO, 1998 , M. jendeki similis MASUMOTO, 1998 are smaller in size than the other members of this genus. The new species can be distinguished from the latter three species by the lateral margins of pronotum weakly concave in middle, elytra with irregular rows of tubercles, and the tubercles in part feebly and cupreously shining.

Distribution. China: Yunnan.

Acknowledgements – We are grateful to Dr. KIMIO MASUMOTO, Otsuma Women’s University, for providing valuable suggestions, pictures and literature. We are indebted to Dr. KIYOSHI ANDO, Shanghai Normal University, for his previous identification of some specimens and his critical review of the manuscript and providing literature. For critical comments and valuable suggestions we also thank Dr. PATRICE BOUCHARD, Agriculture and Agri-Food Canada. Thanks are also due to Dr. LUBOŠ PURCHART, Mendel University of Agriculture and Forestry, and Dr. STANISLAV BEČVÁŘ, České Budějovice, for providing literature. Type specimens were collected by Dr. XIAO-HONG OU, JI-LIANG WANG and CHAO GAO. We acknowledge all of the people who have contributed to this paper in some manner. This work was supported by the National Natural Science Foundation of China under Grant No. 30870322 and No. 30630010 and by the Key Laboratory of Invertebrate Systematics and Application of Hebei Province (ISA09001) .