Tipula (Pterelachisus) biaciculifera Alexander, 1937

Men, Qiu-Lei, 2015, Report on crane flies of the genus Tipula (Diptera: Tipulidae: Tipulinae) from Anhui Province, China, Acta Entomologica Musei Nationalis Pragae 55 (2), pp. 797-810 : 804-808

Tipula (Pterelachisus) biaciculifera Alexander, 1937

( Figs 3 , 21–31 , 34–35 )

Tipula (Pterelachisus) biaciculifera Alexander, 1937: 17 (original description), Figs 20–22 .

Type locality. China, Jiangxi Province, Kuling.

Material examined. CHINA: ANHUI: 7 JJ 8 ♀♀, Yuexi County, Yaoluoping National Nature Reserve , 1000 m, 16.viii.2013, Qiulei Men ; 8 JJ 12 ♀♀, Yuexi County, Yaoluoping National Nature Reserve , 1000 m, 17.viii.2013, Qiulei Men .

Diagnosis. Antenna with scape, pedicel and first flagellomere light yellow, flagellomeres two to four bicoloured, black basally and yellow apically; prescutum light brown with three dark brown stripes; R 1+2 entire, petiole of cell m 1 distinctly shorter than discal cell; abdominal tergites with lateral stripes; hypopygium dark brown, tergite nine produced into two spinous processes in lateral angles.

Redescription. Male (n = 15): body length 12.8–13.0 mm, wing 15.2–15.4 mm, antenna 4.8–5.0 mm.

Rostrum light yellow with lateral side brown, nasus light yellow, surface of rostrum densely covered with black setae, palpi black. Antenna relatively long, bent backwards, extending to first abdominal segment, scape and pedicel light yellow, flagellum made of 10 segments, first flagellomere light yellow, segments two to four bicolored, black basally, yellowish apically, other flagellomeres uniformly black, verticils black, slightly shorter than coordinate segments. Head yellow, vertex with indistinct light brown median stripe.

Pronotum light brown, laterally and medially brown. Prescutum ( Fig. 25 ) light brown with three dark brown stripes, median one expanded apically, narrowly separated by median light brown line. Scutum yellowish brown, each lobe with two dark brown areas. Scutellum and postnotum dark brown. Pleura yellowish brown. Halter with stem yellowish brown, knob dark brown. Legs with coxae dark brown, trochanters yellow, femora yellowish brown with black tips; tibiae and tarsi dark brown. Wings ( Fig. 3 ) tinged with light brown, cells c and sc darker than ground color; stigma dark brown; Rs tinged with dark brown at origin point; apex of wing tinged with light brown including bases of cells r 1+2, r 3, m 1, m 2, m 3, cua 1 and cua 2; cell r 4+5 and discal cell subhyaline; some large hyaline areas in cells r, m and a ( Fig. 3 ). Venation: R

1+2

entire, discal cell narrow and elongate, petiole of cell m

1

distinctly shorter than discal cell.

Abdominal tergites light yellow, blackened laterally, basal tergite variegated by brown, sternites uniformly light yellow, hypopygium dark brown. Male hypopygium relatively large, tergite nine fused in basal portion with sternite ( Fig. 21 ); tergite nine produced into narrowed, sword-shaped process in lateral angle, some individuals with process shorter and truncated ( Fig. 23 ), caudal margin of tergite nine with V-shaped notch in middle, ventral surface of tergite nine with pair of arms ( Figs 22–24 ); sternite nine with deep notch at hind margin, with pair of blades at lateral angles ( Figs 26, 29 ); outer gonostylus narrow, filiform; inner gonostylus relatively widened, apical beak black ( Figs 27–28 ); aedeagal guide gradually narrowed to apex, with rounded incision in lateral view ( Figs 21 , 26 ); aedaegus relatively short, straight ( Fig. 30 ).

Semen pump with compressor apodeme fan-shaped, with ridge in middle, forming 90° angle with posterior immovable apodeme ( Figs 30–31 ). Posterior immovable apodeme equal in length to compressor apodeme, parallel laterally and rounded apically in lateral view ( Figs 30–31 ). Anterior immovable apodeme shorter than posterior immovable apodeme, curved upwards, gradually narrowed to apex ( Figs 30–31 ).

Female (n = 20). Body length 16.0–18.0 mm, wing 15.2–15.4 mm, antenna 2.6–2.8 mm.

Antenna relatively short, bent backwards, not extending to first abdominal segment, scape and pedicel light yellow, first flagellomere light brown, succeeding segments black basally, dark brown apically, verticils black, distinctly longer than coordinate segments.

Abdominal tergites brown with widened median black stripes and widened lateral black stripes, sternites with median black stripes. Ovipositor brown. Cercus narrowed, acinacifoliate, with median ridge in lateral side ( Figs 34–35 ). Hypovalva not surpassing end of sternite ten, gradually narrowed to apex ( Fig. 34 ).

Distribution. China (Anhui, Zhejiang, Jiangxi) based on current records.

Figures

Figs 1–3. Wing.1 – Tipula (Emodotipula) yaoluopingensis sp. nov.; 2 – Tipula coxitalis Alexander, 1935; 3 – Tipula (Pterelachisus) biaciculifera Alexander, 1937.

Figs 21–24. Tipula (Pterelachisus) biaciculifera Alexander, 1937: 21 – hypopygium, lateral view; 22 – tergite nine, ventral view; 23 – tergite nine (short form), dorsal view; 24 – tergite nine (long form), dorsal view.

Figs 25–31. Tipula (Pterelachisus) biaciculifera Alexander, 1937: 25 – thorax, dorsal view; 26 – hypopygium, ventral view; 27 – outer gonostylus and inner gonostylus, dorsal view; 28 – outer gonostylus and inner gonostylus, lateral view; 29 – blade of sternite nine, lateral view; 30 – semen pump, lateral view; 31 – semen pump, dorsal view.

Figs 32–35. Ovipositor. 32–33 – Tipula coxitalis Alexander, 1935: 32 – lateral view; 33 – dorsal view. 34–35 – T. (P.) biaciculifera Alexander, 1937: 34 – lateral view; 35 – dorsal view.

Figs 14–20. Tipula coxitalis Alexander, 1935: 14 – thorax, dorsal view; 15 – hypopygium, dorsal view; 16 – hypopygium, ventral view; 17 – hypopygium, lateral view; 18 – outer gonostylus and inner gonostylus, lateral view; 19 – semen pump, lateral view; 20 – compressor apodeme, dorsal view. Abbreviations: aed = aedeagus, aed gd = aedeagal guide, goncx = gonocoxite, goncx process = process of gonocoxite, i gonst = inner gonostylus, o gonst = outer gonostylus, S9 = sternite nine, T9 = tergite nine, T9 arm = arm of tergite nine.