Tipula (Vestiplex) bicalcarata Savchenko, 1965

Men, Qiu-Lei, Young, Chen W., Starkevich, Pavel, Yu, Yong-Fu & Lei, Xiao-Ping, 2017, Two new species of Tipula (Vestiplex) from Southern China based on morphological and molecular data, with redescription of Tipula (Vestiplex) bicalcarata (Diptera, Tipulidae, Tipulinae), ZooKeys 658, pp. 63-80 : 65-66

Tipula (Vestiplex) bicalcarata Savchenko, 1965

Diagnosis.

Body generally reddish brown in color (Figs 1-6). Ninth tergite separated by a deeply V-shaped notch, lateral angles produced into an ear-like lobe (Fig. 8). Gonocoxite extended into a long arm, directed caudally, widest at base and narrowed to apex (Figs 6-7).

Redescription.

Male. Length: Body: 12.5-13.0 mm (excluding antenna, n = 5); Wing: 19.0-19.5 mm (n = 5); Antenna: 4.3-4.5 mm (n = 5).

Head. Reddish-brown except as noted. Vertex without marking (Fig. 3). Antenna reddish-brown, 13-segmented, bent backward extending to root of halteres; scape cylindrical, expanded apically; pedicel short, hemispherical; each flagellomere subequal in length, basal enlargement black with abundant black verticils, longest ones subequal to length of corresponding flagellomeres. Palpi with basal three segments reddish-brown, last one black.

Thorax. Generally reddish-brown except as noted. Pronotum light yellow laterally, gradually becoming reddish-brown, black medially (Figs 1-2). Prescutum with three light brown stripes, median one marginally suffused with brown at basal half, humeral angle with a black marking at lateral side (Figs 1-2). Scutum with two light brown markings (Fig. 2). Scutellum with dark median stripe. Postnotum wholly reddish-brown. Pleura entirely reddish brown (Fig. 1). Legs slender, coxae, trochanters and femora reddish-brown, tibiae and tarsi light brown. Halteres stem reddish-brown, knob darker. Wings reddish-brown, cells c and sc darker than ground color; stigma dark brown; Rs suffused with dark brown at origin point; discal cell transparent; some large hyaline areas at cells m and a (Fig. 4). Venation: R1+2 entire, discal cell narrow, elongated, petiole of cell m1 distinctly shorter than discal cell (Fig. 4).

Abdomen. Generally reddish brown except as noted. Abdominal tergites with brown lateral stripes (Fig. 5). Hypopygium brown (Fig. 6). Tergite nine with a deeply V-shaped notch, separated medially into two parts, produced into ear-like lobe in lateral angle, beneath it with a dark plate on ventral side (Figs 8, 10). Sternite nine broad, not fused with tergite nine (Figs 6-7, 9). Gonocoxite extended into a long arm, directed caudally, widest at base, tapering to apex, ventrally of gonocoxite with a central band of long black setae (Figs 5-9). Outer gonostylus elongated, thin, generally curled as a tube (Fig. 11). Inner gonostylus tapering to apex, terminating in a black beak, with horn-shaped process on its dorsal side (Fig. 11).

Sperm pump. Compressor apodeme fan-shaped with two rounded extensions marginally (Fig. 11), forming a 45° angle with posterior immovable apodeme (Fig. 12). Posterior immovable apodeme distinctly shorter than compressor apodeme, gradually narrowed to apex (Fig. 12). Anterior immovable apodeme short, gradually narrowed to apex (Fig. 12). Aedeagus tubular, almost 3.0 times longer than sperm pump, acute apically (Fig. 12).

Examined material.

3 males, Guizhou Province, Fanjingshan Mountain, 27°55'N, 108°38'E, 12 June 2015, Guoxi Xue leg. 2 males, Guangxi Zhuang Autonomous Region, Dayaoshan Mountain, 24°08'N, 110°11'E, 14 May 2016.

Distribution.

China (Beibei, Chongqing; new distribution records in China: Fanjingshan Mountain, Guizhou Province; Dayaoshan Mountain, Guangxi Zhuang Autonomous Region, see Fig. 40).