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.