Hemithyrsocera simulans Bey-Bienko 1969

Hemithyrsocera simulans (Bey-Bienko, 1969)

Figs. 10–11, 20–31

Parasymploce simulans Bey-Bienko, 1969: 856; Roth, 1985: 527. Hemithyrsocera simulans, Roth, 1995: 962

Measurements (mm). Male, overall length including tegmina: 17.9–18.4; pronotum length × width: 3.0–3.3×3.9– 4.3; tegmina length: 15.0–15.3. Female, overall length including tegmina: 15.5–16.4; pronotum length × width: 3.0–3.4×4.0–4.3; tegmina length: 14.0–14.6.

Body medium, yellowish brown (Fig. 1). Vertex yellowish brown with middle area pale brown. Ocellar spots pale brown. Face yellowish brown, with one pale yellow macula below each antennal socket (Fig. 11). Labrum pale yellowish brown (Fig. 11). Fifth maxillary palpomere dark brown while others yellowish brown (Fig. 11). Pronotum dark brown with distinct dark yellowish brown and lyrate maculae on disc, each lateral margin hyaline and pale brown (Fig. 10, 22). Tegmina blackish brown with discoidal area hyaline and pale; hind wings hyaline and pale yellowish brown. Sterna yellowish brown and 1st – 7th segment lateral borders with small black spot (Fig. 11).

Vertex with interocular space narrower than the distance between antennal sockets (Fig. 20). Third and fifth maxillary palpomeres approximately same length, and both longer than the fourth (Fig. 21). Pronotum subelliptical, the middle of hind margin strongly produced (Fig. 22). Hind wings with radius area narrow, R1 with 4 branches, posterior branches of R extended before the anterior rami of radius and bifurcated at apical; M simple, Cu with two branches; apical triangle distinct. Front femur Type A3 (Fig. 23). Seventh abdominal tergum specialized with the middle region hyaline but without setae; laterally on each side, a more or less rounded lobe covered with small setae (Fig. 26).

Supra-anal plate (Fig. 27) symmetrical in ventral view, hind margin strongly convex in the middle, posterior region scattered with setae; right and left paraprocts dissimilar and irregular, each with an acute spine arising from the middle, the right one pointed caudadly, and the left one curved and directed right. Subgenital plate (Fig. 28) obviously asymmetrical in dorsal view without obvious process; hind margin uneven with 2 robust fingerlike processes, whose apices scattered with lots of small teeth; right and left posterolateral corners rounded, 2 different conical styli interspersed with some setae arising from the middle and left corner of hind margin.

Male genitalia. L3 (Fig. 29) long and slender, without preapical incision; L2vm (Fig. 30) slender, slightly curved and basally rounded, associated with an irregular sclerite by membrane; R2 (Fig. 31) with a large and irregular sclerite, R3 (Fig. 31) with 2 obvious sclerites, one of which large and inversed Y-shaped, the other nearly L-shaped.

Materials examined. 1 ♂, China, Yunnan Prov., Pu’er, 1384m, 22°45’20”N, 101°00’634”E, 24 May 2014, leg. Li Xinran; 3♂ 2♀, China, Yunnan Prov., Xishuangbanna, Jinghong, Dadugang, 1299m, 22°22’378”N, 100°57’180”E, 28 May 2014, leg. Li Xinran; 10♂ 12♀, China, Yunnan Prov., Xishuangbanna, Jinghong, Dadugang, leg. Liu Hongguang.

Remarks. This species resembles H. irregularitervittata in morphology, but can be distinguished by the following characteristics: 1) seventh abdominal tergum specialized but without setae (two group of strong setae present in H. irregularitervittata); 2) supra-anal plate without intercercal process (intercercal process present in H. irregularitervittata); 3) L2vm slender, slightly curved and apically tapering (apical half distinctly curved and apex forked in H. irregularitervittata).

Distribution. China (Yunnan Prov.).