Tipula (Sinotipula) longiloba, 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 : 104-106

Tipula (Sinotipula) longiloba sp. nov.

urn:lsid:zoobank.org:act:B1F88E5A-4CD2-432B-AB50-1D96C7A2AF64

Figs 54–64

Chinese name

R叶ṃƛfi

Diagnosis

Wing variegated dark grey with numerous small cream and black areas, cell r 4 posteriorly with a small cream spot, cream spot of cell r-m long; tergite 9 with a pair of sharp triangular protrusions; caudal lobe of outer gonostylus long.

Etymology

This species is named after the shape of the caudal lobe of the outer gonostylus, the Latin compound word ‘ lobus ’ means ‘lobe’.

Material examined

Holotype CHINA • ♂; Sichuan, Xiangcheng County, Fozhuxia (佛ΰ峡); 28°27′00″ N, 100°20′24″ E; 3045 m a.s.l.; 10 Jul. 2020; Bintao Du leg.; sweeping; CAU.

Paratypes CHINA • 1♂, 1♀; Sichuan, Daocheng County, Yading ScenicARea (亚TṂffi区); 29°4′44″N, 99°54′48″E; 3135 m a.s.l.; 16 Jul. 2020; Bintao Du leg.; sweeping; CAU .

Description

Male

MEASUREMENTS. Body length 21.2–23.2 mm, wing length 22.2–24.5 mm, antenna length 4.5–4.9 mm (n = 2).

HEAD ( Figs 54, 56 ). Mainly dark brown. Occipital stripe olive grey, extended to vertex, an olive-grey line present on vertex extended to frontal tubercle. Rostrum and nasus brown. Setae on head black. Occiput, postgena and posterior margin of eye with grey pruinescence. Antennal scape and pedicel brownish yellow, flagellaR segments gReyish bRown, each flagellaR segment daRk at base. PRoboscis black. Palpal segment 1 black with pale apex, segments 2 and 3 brown, and segment 4 black.

THORAX ( Figs 54, 56 ). Mainly brownish yellow to dark brown velvety. Pronotum yellow with dark brown mid-longitudinal and lateral stripes extended to head and mesothorax. Prescutum almost wholly dark brown, with four vague olive-grey stripes, median stripes slightly lighter than lateral stripes, broadened anteriorly and gradually narrowed posteriorly, a faint yellow, narrow stripe present between median stripes, areas of two rows of median hairs with somewhat narrow yellow stripes. Scutum reddish bRown, with fouR vague olive-gRey spots, viRtually confluent, scutum with gRey pRuinescence at posteRioR margin. Scutellum and mediotergite dark brown with grey pruinescence. Membrane between prescutum and pleuron yellow, consistent with pronotum. Pleuron mainly brownish yellow, with a reddish-brown stripe extended from head to lower part of calypter. Pleuron with extensive white pruinescence except anepisternum. Katepisternum greyish brown on upper portion. Setae on thorax pale yellow. Legs with coxae yellow and white pruinescent, trochanter with black spot ventrally, femora yellow with brownish black apex, tibiae yellow with brown apex, tarsomere 1 yellow with dark apex, tarsomeres 2–3 yellowish brown, tarsomeres 4–5 dark greyish brown. Claw with a black triangular tooth. Setae on legs dark brown with golden lustre. Wing variegated dark grey with numerous small cream and black areas, veins and cell Sc bright yellow, pterostigma black, petiole of cell m 1 less than ½ as long as discal cell length, M2 with a large obtuse angle, cell r 4 posteriorly with a small cream spot, cream spot of cell r-m long ( Fig. 57 ). Halter mainly brownish yellow, stem dark with pale yellow base, knob greyish brown medially.

ABDOMEN ( Fig. 54 ). Mainly brownish yellow, Abdominal tergites 6–9 and sternites 7–9 pitch-black, sternite 6 brownish black at posterior half, all tergites with black lateral stripes, lateral margins of tergites with discontinuous greyish white narrow stripes. Setae on tergites black, but those on sternite golden.

HYPOPYGIUM ( Figs 55 , 60–64 ). Mainly black, gonostylus dark yellow. Tergite 9 with a quadrate sclerotized toothed plate on ventral surface, four angles of plate each with a subtriangular protrusion, ventral border of plate with some small teeth and a lamellar protrusion. Tergite 10 translucent with a pair of long gonostyli. Gonocoxite and sternite 9 fused. Posterior margin of sternite 9 with short hairs and a pair of lobate, setose protrusions near base. Adminiculum sharp. Inner side of outer gonostylus with many spines, caudal lobe long, about ½ as long as outer gonostylus ( Fig. 63 ). Inner gonostylus with sharp beak, beak wide basally; outer basal lobe stick-shaped ( Fig. 64 ).

Female

MEASUREMENTS. Body length 29.8 mm, wing length 31.9 mm, antenna length 4.6 mm (n = 1).

Body color darker than in male. Pleuron mainly dark brown, with much white pruinescence. Claw without tooth. Cell r 4 posteriorly without cream spot, cell m 1 slightly longer than in male, pterostigma paler than in male. Black stripes of abdomen wide, tergites and sternites black at posterior margin. Other characteristics same as in male ( Fig. 58 ).

OVIPOSITOR. Long. Infra-anal plate membranous. Fused valculae obtuse. Hypovalve long, apex obtuse ( Fig. 59 ).

Distribution

China (Sichuan).

Remarks

This new species is similar to T. (S.) arjunoides Alexander, 1961 and T. (S.) exquisita Alexander, 1935 . However, in T. (S.) arjunoides the lower part of tergite 9 has no protrusions, the outer gonostylus has no spines and the inner gonostylus is clavate ( Alexander 1961). In T. (S.) exquisita the prescutum is yellow, the tergite 9 has many small protrusions and the caudal lobe of the outer gonostylus is short ( Alexander 1935).

Figures

Figs 54–57. Tipula (Sinotipula) longiloba sp. nov., holotype, ♂ (CAU). 54. Habitus, lateral view. 55. Hypopygium, lateral view. 56. Head and thorax, dorsal view. 57. Wing. Abbreviations: see Material and methods. Scale bars: 54, 56–57 = 1.0 mm; 55 = 0.5 mm.

Figs 58–59. Tipula (Sinotipula) longiloba sp. nov., paRatype, ♀ (CAU). 58. Habitus, lateral view. 59. Ovipositor, lateral view. Scale bars: 58 = 2.0 mm; 59 = 1.0 mm.

Figs 60–64. Tipula (Sinotipula) longiloba sp. nov., holotype, ♂ (CAU). 60. Tergite 9, dorsal view. 61. Tergite 9, rear view. 62. Hypopygium, ventral view. 63. Outer gonostylus, lateral external view. 64. Inner gonostylus, lateral external view. Scale bars = 0.2 mm.