Tipula (Sinotipula) forcipicauda, Yang & Ren & Liu & Yang, 2023

Yang, Qi-cheng, Ren, Jin-long, Liu, Xiao-yan & Yang, Ding, 2023, Four new species of Tipula (Sinotipula) Alexander (Diptera, Tipulidae) from China and a new replacement name in Tipula (Vestiplex) Bezzi, 1924, European Journal of Taxonomy 879 (1), pp. 83-115 : 94-97

Tipula (Sinotipula) forcipicauda sp. nov.

urn:lsid:zoobank.org:act:8A5F2BC9-3C29-4CEC-AA2C-A4F729FC3939

Figs 25–33

Chinese name

Ḃ尾ṃƛfi

Diagnosis

Prescutum reddish brown; pleuron with a reddish-brown stripe extended from head to lower part of calypter; calypter pitch-black on lower portion; posterior margin of sternite 9 with a pair of pincer-like protrusions.

Etymology

This species is named after the shape of the protrusions on sternite 9, the Latin compound word ‘ forcip - cauda ’ meaning ‘pincer-like cauda.’

Material examined

Holotype CHINA • ♂; Xizang, Yadong County, Qing Dynasty Customs Site ; 27°25′20″ N, 88°55′13″ E; 3137 m a.s.l.; 4 Aug. 2020; Yuetian Gao leg.; light trap; CAU.

Paratype CHINA • 1 ♂; Xizang, Yadong County, Boluoka (ȃê卡); 27°23′3″ N, 88°58′22″ E; 2774 m a.s.l.; 3 Aug. 2020; Yuetian Gao leg.; light trap; CAU .

Description

Male

MEASUREMENTS. Body length 18.6–19.5 mm, wing length 23.2–24.5 mm, antenna length 4.2–4.6 mm (n = 2).

HEAD ( Figs 25, 27 ). Mainly reddish brown. Occipital stripe black, extended to frontal tubercle. Rostrum and nasus reddish brown. Setae on head black. Frontal tubercle, base of scape and posterior margin of eye with white pruinescence, pruinescence of posterior margin of eye extended to neck. Antennal scape and pedicel yellowish bRown, flagellaR segments daRk yellow, except segment 11 black, flagellaR segments 1–10 slightly dark at base. Proboscis brownish black. Palpal segments 1 and 2 dark brown, segment 3 brownish yellow and segment 4 black, except base brownish yellow.

THORAX ( Figs 25, 27 ). Mainly pale brown and reddish brown velvety. Pronotum light yellow with reddish brown mid-longitudinal and lateral stripes extended to head and mesothorax. Prescutum almost wholly reddish brown, with four vague, slightly pale stripes, median stripes broadened anteriorly and gradually narrowed posteriorly. Scutum reddish brown with vague spots. Scutellum and mediotergite dark brown, mediotergite with uneven white pruinescence, but extensive at posterior margin. Membrane between prescutum and pleuron light yellow, consistent with pronotum. Pleuron mainly brown with a reddish-brown stripe extended from head to lower part of calypter, calypter pitch-black on lower portion. Pleuron with extensive white pruinescence except anepisternum. Anepisternum reddish brown on upper portion, pale brown on lower portion. Pruinescence of katepisternum dark brown on lower portion. Anepimeron reddish brown on upper portion, pale brown on lower portion. Katepimeron pale brown. Meron yellowish brown. Metakatepisternum brown. Katatergite dark brown on upper portion, brownish yellow on lower portion. Setae on thorax black. Legs with coxae yellowish brown but brown at lower margin, lower part of coxae with pruinescence, trochanter with black spot ventrally, femora yellow with black basal margin and pale brown apex, tibiae yellow with apex slightly dark, tarsomere 1 yellow, tarsomeres 2–4 greyish black, claw with a black tooth. Setae on legs brown. Wing variegated grey with numerous small pale and dark grey areas, veins and cell Sc bright yellow, pterostigma dark brown, petiole of cell m 1 less than ⅓ as long as discal cell ( Fig. 28 ). HalteR with stem gReyish bRown, knob yellow with black base.

ABDOMEN ( Fig. 25 ). Mainly yellowish brown. Abdominal tergites 3–6 yellow, sternites 5–6 yellow, all tergites dark brown at posterior margin and with black lateral stripes, posterior margin of tergites 2–6 dark with small grey lateral corners. Setae on abdomen black.

HYPOPYGIUM ( Figs 25 , 29–33 ). Brown. Tergite 9 with a pair of small tooth-like protrusions, apically slightly truncated, but without sclerotized structure on ventral surface. Gonocoxite and sternite 9 fused. Gonocoxite with a tuft of hairs at posterior margin. Posterior margin of sternite 9 with a pair of pincer-like protrusions and with a pair of tufts near base of protrusions. Adminiculum spear-shaped, basally connected with protrusions of sternite 9. Outer gonostylus approximately boat-shaped, caudal lobe shorter than anterior protrusion ( Fig. 32 ). Inner gonostylus pistol-shaped with obtuse beak slightly swollen ( Fig. 31 ).

Female

Unknown.

Distribution

China (Xizang).

Remarks

This new species is similar to T. (S.) arjuna Alexander, 1962 and T. (S.) arjunoides Alexander, 1961 . However, in T. (S.) arjuna the petiole of cell m 1 is about ½ as long as the cell, the tooth-like protrusions of tergite 9 are short and rounded and sternite 9 has no special protrusion ( Alexander 1962). In T. (S.) arjunoides , the hypopygium is yellow, the protrusions of tergite 9 are forked and the inner gonostylus is compressed at the middle ( Alexander 1961).

Figures

Figs 25–28. Tipula (Sinotipula) forcipicauda sp. nov., holotype, ♂ (CAU). 25. Habitus, lateral view. 26. Hypopygium, lateral view. 27. Head and thorax, dorsal view. 28. Wing. Abbreviations: see Material and methods. Scale bars = 1.0 mm.

Figs 29–33. Tipula (Sinotipula) forcipicauda sp. nov., holotype, ♂ (CAU). 29. Tergite 9, dorsal view. 30. Hypopygium, ventral view. 31. Inner gonostylus, lateral external view. 32. Outer gonostylus, lateral external view. 33. Adminiculum, ventral view. Scale bars = 0.2 mm.