Stegana ( Steganina ) nayun Li & Chen

Stegana ( Steganina) nayun Li & Chen View in CoL , sp. nov.

( Figs. 12C, 12D View FIGURE 12 , 54 View FIGURE 54 )

Diagnosis. This species is similar to S. ( S.) cylindrica Wang, Gao, & Chen, 2013 in the shape of male terminalia (as fig. 2 in Wang et al. 2013, Fig. 54 View FIGURE 54 ), but can be distinguished from the latter by having the tubular aedeagus distoventrally with 3 rugae per side, lacking pubescence ( Fig. 54C, D View FIGURE 54 ); the subepandrial sclerite lacking pubescence ( Fig. 54G View FIGURE 54 ).

Description. Male and female: First flagellomere brownish. Clypeus yellow. Mesonotum brown medially, brownish yellow laterally ( Fig. 12C View FIGURE 12 ). Katepisternum yellow ( Fig. 12D View FIGURE 12 ). Scutellum brown medially, dark brown laterally, yellow at tip ( Fig. 12C View FIGURE 12 ). Halter mostly grey ( Fig. 12D View FIGURE 12 ). Fore femur with a row of 4 long setae on distal part of posteroventral surface. Abdominal tergites brown to dark brown; sternites brown, about 2 times as wide as long. Male terminalia ( Fig. 54A–G View FIGURE 54 ): Epandrium with ca. 11 setae on dorsal to posterior portions per side ( Fig. 54A View FIGURE 54 ). Surstylus with 1 peg-like tooth and some setulae near distal margin, lacking pubescence ( Fig. 54A, B View FIGURE 54 ). Cercus lacking pubescence ( Fig. 54A View FIGURE 54 ). Hypandrium strongly expanded anteromedially ( Fig. 54C, D View FIGURE 54 ). Pregonite small, with 2 sensilla ( Fig. 54C, D View FIGURE 54 ). Aedeagus lacking serrated process ( Fig. 54C, D View FIGURE 54 ). Aedeagal sheath distally dorsad curved and with several minute, serrated processes ( Fig. 54E, F View FIGURE 54 ). Subepandrial sclerite slightly rectangle distally ( Fig. 54G View FIGURE 54 ). Female terminalia ( Fig. 54H–J View FIGURE 54 ): Epiproct with several setae on distal 1/2 ( Fig. 54H View FIGURE 54 ). Cercus and hypoproct with numerous setae and much pubescence ( Fig. 54H, J View FIGURE 54 ). Eight sternite about 1.5 times as long as wide, glabrous on basal 4/5, with several setae and some pubescence on distal 1/5 ( Fig. 54I View FIGURE 54 ).

HW = 0.38 (0.42), ch/o = 0.29 (0.38), prorb = 1.05 (1.50), rcorb = 0.79 (0.88), vb = 0.64 (0.93), dcl = 0.43 (0.35), presctl = 0.70 (0.70), sctl = 3.15 (2.39), sterno = 1.19 (0.93), orbito = 1.89 (1.89), dcp = 0.21 (0.21), sctlp = 1.78 (2.22), C = 1.98 (1.95), 4c = 1.05 (1.39), 4v = 1.20 (2.21), 5x = 1.54 (1.91), ac = 10.25 (13.00), M = 0.55 (0.76), C3F = 0.61 (0.70).

Type materials. Holotype ♂ ( SCAU, No. 125730, DNA #2674), CHINA: Jinshan, Menglian , Yunnan, 22°19'29''N, 99°35'00''E, alt. 940m, 25.x.2017, ex tree trunk, H.W. Chen GoogleMaps . Paratypes: 1♀ ( SCAU, No. 125731, DNA #2693), other data same as holotype GoogleMaps ; 1♀ ( SCAU, No. 125787, DNA #2608), Fengtongzhai, Baoxing , Sichuan, 30°32'42''N, 102°54'24''E, alt. 1500m, 18.vii.2017, ex tree trunk, Y.L. Wang. GoogleMaps

Distribution. China ( Sichuan, Yunnan).

Etymology. From the name of the type locality "Jinshan" belonging to "Nayun, Menglian, Yunnan ".