Tipula coxitalis Alexander, 1935

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 : 801-804

Tipula coxitalis Alexander, 1935

( Figs 2 , 14–20 , 32–33 )

Tipula (Oreomyza) coxitalis Alexander, 1935a: 532 (original description), Pl. 1, Fig. 5 , Pl. 2, Figs 30–31 .

Type locality. China, Taiwan, Hassensan.

Material examined. CHINA: ANHUI: 2 JJ, Huangshan Moutain, Hougu , 25.v.2012, collector unknown ; 1 J, Huangshan Moutain, Hougu , 1.vi.2013, collector unknown ; 2 JJ 3 ♀♀, Huangshan Moutain, Hougu , 5.vi.2014, Qiulei Men .

Diagnosis. Antenna with scape, pedicel and first flagellomere yellow, flagellomeres two to four bicoloured, black basally and yellow apically, rest of flagellomeres uniformly black; prescutum grey with three brownish grey stripes; wing obscure brown with dark stigma, R 1+2 entire, petiole of cell m 1 distinctly shorter than discal cell; abdominal tergites with indistinct lateral and median dark stripes; hypopygium brownish black, tergite nine produced into two horn-shaped processes, sternite nine with two strands of long hairs, gonocoxite long, paliform apically.

Redescription. Male (n = 5). Body length 13.3–13.5 mm, wing 17.5–17.7 mm, antenna 4.5–4.7 mm.

Rostrum entirely yellow with nasus yellow, surface of rostrum densely covered with black setae, palpi with basal two segments yellowish brown, other segments black. Antenna relatively long, bent backward extending to first abdominal segment, scape and pedicel yellow, flagellum with 10 segments, first flagellomere yellow, second to fourth flagellomeres black basally, yellow apically, basal enlargement with black verticils, subequal to coordinate fl- agellomeres, other flagellomeres uniformly black. Head yellow, vertex with brown median vitta, sometimes indistinct.

Pronotum light brown, getting darker in middle. Prescutum ( Fig. 14 ) grey with three brownish grey stripes, median one expanded apically, sometimes separated by indistinct light grey line, lateral stripe rounded apically. Scutum yellowish brown, each lobe with two pale brown areas. Scutellum and postnotum yellowish brown with pale brown median line. Pleura yellowish brown, variegated by dark brown on ventral sides of anepisternum and katepisternum. Halter with stem yellowish brown, knob dark brown. Legs with coxae and trochanters yellow; femora yellowish brown with dark brown tips; tibiae brown, sometimes with narrow dark brown tips; tarsi dark brown. Wings ( Fig. 2 ) light brown, cells c and sc suffused with brown; 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, r 4+5, cua 1 and cua 2; discal cell transparent; some large hyaline areas in cells r, m and a ( Fig. 2 ).Venation: R 1+2 entire, discal cell narrow, elongate, petiole of cell m

1

distinctly shorter than discal cell.

Abdomen yellowish brown, tergites with indistinct lateral and median dark stripes, fifth to eighth sternite with median dark stripes, hypopygium brownish black. Tergite nine separated medially, produced into a pair of horn-shaped processes in lateral angles, a pair of angular arms arising from ventral surface of tergite nine, arm with a truncated process directed inwards ( Fig. 15 ); sternite nine with caudal margin rounded, ventral surface of sternite nine with two strands of long hairs ( Fig. 16 ); gonocoxite elongate, separated from sternite nine, gradually narrowed to apex, paliform apically, finger-like process generated from base of gonocoxite in ventral view ( Figs 15–17 ); outer gonostylus narrow, filiform ( Figs 17–18 ); inner gonostylus with black beak at apex, with two narrowed processes at dorsal margin ( Figs 15–18 ); aedeagal guide gradually narrowed to apex, curved ventrad in lateral view ( Figs 16–17 ); aedeagus tubular and elongate ( Fig. 19 ).

Semen pump with compressor apodeme V-shaped, divided by V-shaped notch medially, forming 90° angle with posterior immovable apodeme ( Figs 19–20 ). Posterior immovable apodeme shorter than compressor apodeme in lateral view, gradually narrowed to apex in lateral view ( Figs 19–20 ). Anterior immovable apodeme equal in length to posterior immovable apodeme, gradually narrowed to terminus ( Figs 19–20 ).

Female (n = 3). Body length 18.5–18.7 mm, wing 18.2–18.4 mm, antenna 2.8–2.9 mm.

Antenna relatively short, bent backwards, not extending to root of wing, scape and pedicel yellow, first flagellomere yellow, succeeding flagellomeres black basally, dark brown apically, basal enlargement with black verticils, distinctly longer than coordinate flagellomeres.

Abdominal tergites with widened median stripes and narrowed lateral stripes, sternites with median stripes. Ovipositor brown, hypovalva and base of tergite ten variegated by black ( Figs 32–33 ). Sternite ten distinctly longer than cercus, basal half widened and gradually narrowed to apex in dorsal view ( Figs 32–33 ). Cercus narrowed, acinacifoliate ( Fig. 32 ). A median ridge arising on lateral surface of cercus. Hypovalva not surpassing end of sternite ten, gradually narrowed proximally ( Fig. 32 ).

Distribution. China (Anhui, Taiwan) based on the current study.

Remarks. Tipula coxitalis was originally placed in the subgenus Oreomyza Pokorny, 1887 , which was subsequently treated as a synonym of the subgenus Pterelachisus Rondani, 1842 . Until now, the subgeneric position of Tipula coxitalis has not been defined ( OOSTERBROEK 2015). In my opinion, Tipula coxitalis should be placed in the subgenus Vestiplex Berri, 1924 because of the character of its male hypopygium with distinctly elongated gonocoxite, which is generally observed among the species of Vestiplex . However, the subgeneric placement of Tipula coxitalis is cannot be defined for certain in this study.

Figures

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

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.

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 4–13. Tipula (Emodotipula) yaoluopingensis sp. nov.: 4 – thorax, dorsal view; 5 – hypopygium, dorsal view; 6 – hypopygium, lateral view; 7 – sternite eight, ventral view; 8 – outer gonostylus, ventral view; 9 – outer gonostylus, dorsal view; 10 – inner gonostylus, ventral view; 11 – aedegal guide, ventral view; 12 – semen pump, lateral view; 13 – compressor apodeme,dorsal view.Abbreviations:aed gd = aedeagal guide,AIA = anterior immovable apodeme, CA = compressor apodeme, i gonst = inner gonostylus, o gonst = outer gonostylus, PIA = posterior immovable apodeme.

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.