Morphostenophanes aenescens yelang Zhou

Zhou, De-Yao, 2020, A revision of the genus Morphostenophanes Pic, 1925 (Coleoptera, Tenebrionidae, Stenochiinae, Cnodalonini), Zootaxa 4769 (1), pp. 1-81 : 13-14

Morphostenophanes aenescens yelang Zhou , new subspecies ṚẘẎȐAEƤỠDZdzď

( Figs. 5 A–D; 16M, Q; 17L, Q; 18H; 19G–I, W; 20H, S)

Type materials. CHINA: Yunnan: ♂ (Holotype, SNUC) , Qujing City , Shizong County, 1865m, 2018.vii.30, Ke Tang. Paratypes (2♀♀) : CHINA: Yunnan: 1♀ ( SNUC, a sample of muscle tissue was preserved in 99.7% ethanol at –18 °C in CZDY) , Qujing City , Shizong County, 1865m, 2018.vii.30, Ke Tang; 1♀ ( RBINS) , Kouang Si Hien [Guangxi County = Luxi County], alt. 2100 m, Steihmetz .

Diagnostic description. Male ( Fig. 5A, C ). Color lighter, greyish-green, with coppery luster, pronotum faintly presented an annular greenish area. Body elongate, length 20.9 mm, width 7.4 mm, less convex. Head ( Fig. 16M, Q ) with OI of 56.7. Antennae ( Fig. 18H ) more slender, relative lengths of antennomeres: 0.60: 0.31: 1.02: 0.92: 0.94: 0.99: 1.04: 1.00: 0.97: 0.87: 1.09. Pronotum ( Fig. 17L ) barrel-shaped, PW/PL = 1.12, disc moderately convex, shagreened, with densely scattered large and deep punctures, with a pair of vague impressions on both sides. Elytra more elongate and flattened, widest near middle, EL/EW = 1.89.

Aedeagus ( Fig. 20H ) more elongate, 0.29 as long as the total length, apicale of parameres wider.

Female ( Fig. 5B, D ). Stouter than male, length 19.2 mm. OI = 56.9; PW/PL = 1.28; disc of elytra more flattend, dorsum nearly straight, gradually rising posteriorly, highest in apical third; EL/EW = 1.58.

Comparative notes. This subspecies can be distinguished from the nominate subspecies mainly by its lighter and somewhat purplish body color (dark greyish blue in the latter), distinctly more slender antenna and more elongate legs, sometimes observed faint annular greenish area on pronotum (absent in the latter), and less convex elytra.

Distribution. ( Map 1 ). CHINA: Yunnan.

Etymology. The new subspecies is named from ‘Yelang’, an ancient country located around the type locality in the Han dynasty.

Figures

Map 1. Distribution of the Morphostenophanes species. A. Enlargement of Central and Western Yunnan Province.

FIGURE 5. Habitus of Morphostenophanes aenescens yelang Zhou new subspecies. Male (A, C), and female (B, D); in dorsal (A, B), and lateral view (C, D). Scale bars = 5 mm.

FIGURE 16. External characters of Morphostenophanes species in the aenescens- and chongli-group: M. aenescens Pic (A, F), M. cuproviridis Gao & Ren (B, G), M. curvitibialis Zhou new species (C, H, V), M. iridescens Zhou new species (D, I), M. luoxiaoshanus Zhou new species (E, J, U), M. papillatus Kaszab (K, O), M. purpurascens Zhou new species (L, P), M. aenescens yelang Zhou new subspecies (M, Q), M. chongli Zhou new species (N, R), and M. yunnanus Zhou new species (S, T). Male heads in dorsal view (A–E, K–N, S), and in ventral view (F–J, Q–R, T). Flanks of mesosterna (U, V). Scale bars of A–R = 1 mm, S–V not to scale. Abbreviations: ptp, posterior tentorial pits. Full meaning of all abbreviations of M. yunnanus habitats expounded as in Map 2.

FIGURE 17. Male prothoraces of Morphostenophanes species in the aenescens- and chongli-group: M. cuproviridis Gao & Ren (A, F), M. curvitibialis Zhou new species (B, G), M. iridescens Zhou new species (C, H), M. luoxiaoshanus Zhou new species (D, I), M. papillatus Kaszab (E, J), M. purpurascens Zhou new species (K, P), M. aenescens yelang Zhou new subspecies (L, Q), M. chongli Zhou new species (M, R), M. chongli glaber Zhou new subspecies (N, S), M. aenescens Pic (O, T) and M. yunnanus Zhou new species (S, T); in dorsal view (A–N, K–O, U, d), and in ventral view (F–J, P–T, v). Scale bars of A–N, P–S = 1 mm; O, T, U not to scale. Abbreviations of M. aenescens: XsD, Xishan District; FyC, Fuyuan County. Abbreviations of M. yunnanus habitats expounded as in Map 2, except CDll, Central Dali population; CDls, small individual of Central Dali population.

FIGURE 18. External characters of Morphostenophanes species in the aenescens- and chongli-group: M. aenescens Pic (A, L–N), M. cuproviridis Gao & Ren (B, O–Q), M. curvitibialis Zhou new species (C, R–T), M. iridescens Zhou new species (D, U–W), M. luoxiaoshanus Zhou new species (E, X–Z), M. papillatus Kaszab (F), M. purpurascens Zhou new species (G, Gv), M. aenescens yelang Zhou new subspecies (H), M. chongli Zhou new species (I), and M. yunnanus Zhou new species (J), and M. chongli glaber Zhou new subspecies (K). Male antennae in dorsal view (A–K), a variation of antennomere XI (Gv). Male protibiae, in dorsal view (L, O, R, U, X); mesotibiae, in ventral view (M, P, S, V, Y); and metatibiae, in dorsal view (N, Q, T, W, Z). Scale bars of A–K = 2 mm; L–Z = 1 mm. Full meaning of all abbreviations standing for M. yunnanus habitats expounded as in Map 2.

FIGURE 20. Anatomic structures of Morphostenophanes species in the aenescens- and chongli-group: M. aenescens Pic (A, L), M. cuproviridis Gao & Ren (B, M), M. curvitibialis Zhou new species (C, N), M. iridescens Zhou new species (D, O), M. luoxiaoshanus Zhou new species (E, P), M. papillatus Kaszab (F, Q), M. purpurascens Zhou new species (G, R, V), M. aenescens yelang Zhou new subspecies (H, S), M. yunnanus Zhou new species from the type locality (I, T, W), M. chongli Zhou new species (J, U) and M. chongli glaber Zhou new subspecies (K). Aedeagi (A–K), male sternites VIII (L–U), and female reproductive organs (V, W); in dorsal view (d), lateral view (l), and enlargements of parameres apices (p). Scale bars of A–U= 1 mm; V–W = 2 mm; all parameres apices not to scale. Abbreviations: al, apical lobes of parameres.