Stegana ( Oxyphortica ) laohlie Zhang and Chen, 2017

Stegana ( Oxyphortica) laohlie Zhang and Chen , sp. nov.

( Figures 3 View Figure 3 (a), 4(e), 6(a) and 12).

Diagnosis

This species is related to S. ( O.) dainuo sp. nov. in the shape of aedeagus in ventral view, but can be distinguished by having the aedeagus strongly expanded outward on both sides of peristome, strongly protruded dorsally ( Figure 12 View Figure 12 (c, d)).

Description

Clypeus dark brown. Palpus yellow. Mesoscutum brown to dark brown medially, yellow laterally, with one pair of thin, brown longitudinal stripes sublaterally ( Figure 4 View Figure 4 (e)). Scutellum brown, yellow along margin. Katepisternum yellow, sometimes slightly brownish anteriorly. Wing grey, greyish brown anterodistally, posterior crossvein and neighbouring longitudinal veins darkened ( Figure 3 View Figure 3 (a)). Abdominal tergites: 1st yellow; 2nd and 3rd yellow medially, dark brown laterally, anteromedially with one dark brown patch on 2nd; 4th and 5th tergites, yellow on anterior margins, with broad dark brown, medially and laterally protruded bands on posterior margins; 6th tergite narrowly yellow medially, dark brown laterally ( Figure 6 View Figure 6 (a)). Male terminalia: Epandrium nearly rectangular on posterolateral corners, with dense pubescence and setae ( Figure 12 View Figure 12 (a)). Cercus lacking pubescence ( Figure 12 View Figure 12 (a)). Surstylus small, roughly to lobe-shaped, with several setae distally ( Figure 12 View Figure 12 (a, b)). Parameres absent ( Figure 12 View Figure 12 (c, d)). Aedeagus mostly sclerotized except peristome ( Figure 12 View Figure 12 (c, d)). Gonopods broadened to hood-shaped ( Figure 12 View Figure 12 (e)).

Measurements

BL = 3.00 mm in holotype (range in five males and five females paratypes: 2.60–3.33 mm in males, 3.11–3.96 mm in females), ThL = 1.67 mm ( 1.27–1.80 mm in males, 1.42– 1.96 mm in females), WL = 2.77 mm ( 2.30–2.83 mm in males, 2.80–3.29 mm in females), WW = 1.23 mm ( 1.03–1.27 mm in males, 1.02–1.56 mm in females), arb = 6/4 (5–7/3–5), avd = 0.92 (0.73–0.92), adf = 2.00 (2.00–3.00), flw = 2.00 (1.67–2.00), FW/HW = 0.53 (0.43– 0.52), ch/o = 0.09 (0.09–0.12), prorb = 1.00 (0.87–1.00), rcorb = 0.65 (0.53–0.64), vb = 0.55 (0.45–0.63), dcl = damaged (0.26–0.48), presctl = damaged (0.41–0.64), sctl = damaged (1.00–1.28), sterno = 0.81 (0.85–0.94), orbito = 1.75 (1.50–1.75), dcp = 0.21 (0.21–0.28), sctlp = 0.92 (0.82–1.09), C = 2.89 (2.71–3.38), 4c = 0.78 (0.67–0.85), 4v = 1.70 (1.56–1.88), 5x = 1.22 (1.00–1.38), ac = 4.50 (4.00–5.67), M = 0.50 (0.39–0.50), C3F = 1.00 (1.00).

Type specimens

Holotype male ( SCAU, No. 124176), China: Muyiji Park, Ximeng , Yunnan, 22°37′15 ʹ ’N, 99° 35′42 ʹ ’E, altitude 1200 m, 1–2 April 2011, ex tree trunk, YR Su . Paratypes: China: six males, 12 females ( SCAU, Nos. 124177–88, 122937–42), same data as holotype, JM Lu, ZF Shao, YR Su, SJ Yan; one male, two females ( KIZ, Nos. 0088152–54), Muyiji Park, Ximeng , Yunnan, altitude 1200 m, 3 May 2016, ex tussock, J Huang, YL Wang, L Zhu; one male, one female ( SCAU, Nos. 124816, 17), Mengdong, Cangyuan, Yunnan, altitude 1320 m, 7 May 2016, ex tussock, J Huang, YQ Liu .

Etymology

The name means ‘bless you’ in the language of the Va nationality in Yunnan, China.

Distribution

China ( Yunnan).