Tipula (Sinotipula) hobsoni Edwards, 1928

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 : 101-104

Tipula (Sinotipula) hobsoni Edwards, 1928

Figs 44–53

Chinese name

Ʀāṃƛfi

Diagnosis

Mainly orange; prescutum dark brown, wing pale yellow with grey areas, pterostigma yellow; tergite 9 with a paiR of tooth-like pRotRusions at posteRioR maRgin; outeR gonostylus wide and flat, with two hoRn-like protrusions anteriorly and two slender lobes posteriorly.

Material examined

CHINA – Xizang • 1 ♂; Yadong City, Qing Dynasty Customs Site ; 27°25′11″ N, 88°55′51″ E; 3041 m a.s.l.; 1 Aug. 2020; Qicheng Yang leg.; light tRap; CAU • 1 ♂; Yadong City ; 3300 m a.s.l.; 11 Jul. 2018; Qicheng Yang leg.; sweeping; CAU .

Photo material

CHINA • Holotype; Yatung ; 4500 feet a.s.l.; A.E. Hobson leg.; BMNH (photos by Jinlong Ren).

INDIA • 1 ♂; Sikkim, Namnasa ; 9500 feet a.s.l.; 12 MaR. 1959; Schmid leg.; USNM (photos by Yan Li) • 1 ♂; Sikkim, Shingla ; 10 400 feet; 30 Jun. 1959; Schmid leg.; USNM (photos by Yan Li) .

Redescription

Male

MEASUREMENTS. Body length 22.0– 22.6 mm, wing length 25.0– 25.2 mm, antenna length 5.0– 5.5 mm (n = 2).

HEAD ( Figs 45–46 ). Mainly brown. Occiput with two areas with white pruinescence. Rostrum and nasus bRown. Setae on head daRk bRown. Antenna oRange with white appRessed pubescence, bases of flagellaR segments slightly dark. Proboscis brown. Palpal segments 1 and 2 yellow, segments 3 and 4 dark brown.

THORAX ( Figs 45–46 ). Mainly orange. Pronotum reddish brown at middle, extended to head and anepimeron. Prescutum dark brown with four blurry brown stripes, all stripes with reddish brown margins, median stripes broadened anteriorly and gradually narrowed posteriorly. Scutum dark brown, with four brown blurry spots. Scutellum and mediotergite brown, mediotergite with abundant, uneven pruinescence, except on middle portion. Pleuron mainly orange with slight white pruinescence. Anepisternum yellowish brown, dark on upper portion, membranous suture with prescutum dark brown; katepisternum, anepimeron, epimeron and metapleuron with brown areas. Setae on thorax pale yellow. Legs with femora and tibiae brownish yellow, apically slightly dark; tarsi brownish yellow. Claw with a black tooth basally. Setae on legs dark brown. Wing pale yellow with grey areas, pterostigma yellow, long spot of cell cua dark grey, spot of M 3 base basally dark grey, petiole of cell m 1 ⅓ as long as discal cell ( Fig. 47 ). Halter with yellow stem and orange knob.

ABDOMEN ( Figs 45–46 ). Mainly yellow. All tergites with slender black lateral stripes, sternites and tergites 6–8 dark at lateral margin. Setae on abdomen golden.

HYPOPYGIUM ( Figs 44 , 48–53 ). Mainly yellowish brown. Posterior margin of tergite 9 with a pair of tooth-like protrusions slightly slanted at tip, ventrally with two or three teeth. Gonocoxite and sternite 9 fused, sternite 9 with a pair of pubescent oval protrusions. Adminiculum wide basally, narrow apically, with a slendeR pRotubeRance at middle. OuteR gonostylus wide and flat, with two hoRn-like pRotRusions anteriorly and two slender lobes posteriorly ( Fig. 52 ). Inner gonostylus recurved, inside concave, outside bulged, apex with a fingeR-like pRotRusion ( Fig. 53 ).

Female

Apart from the genitalia, similar to male; cercus and hypovalve short.

Distribution

China (Xizang); India (Sikkim).

Remarks

In the male specimen from Shingla, Sikkim (USNM), the distance between the two protrusions on tergite 9 is narrower than in that from Namnasa, Sikkim (USNM) or Yadong City, Xizang (CAU). The distance between the two protrusions of tergite 9 might not be a stable special feature in Sinotipula . In the specimen from the Qing Dynasty Customs Site in Yadong City, tergite 9 is asymmetrical (possibly damaged), and the ventral surface of tergite 9 has two teeth ( Fig. 51 ). In holotype, the ventral surface of tergite 9 has two teeth ( Edwards 1928), but in the specimens from Yadong City and some individuals from Sikkim (USNM), the ventral surface of tergite 9 has three teeth ( Fig. 50 ) ( Alexander 1970).

Figures

Figs 44–47. Tipula (Sinotipula) hobsoni EdwaRds, 1928, ♂ (CAU). 44. Hypopygium, lateral view. 45. Habitus, lateral view. 46. Head and thorax, dorsal view. 47. Wing. Abbreviations: see Material and methods. Scale bars = 1.0 mm.

Figs 48–53. Tipula (Sinotipula) hobsoni EdwaRds, 1928, ♂♂ (CAU). 48. Tergite 9, dorsal view (Yadong City). 49. Hypopygium, ventral view. 50. Tergite 9, rear view (Yadong City). 51. Tergite 9, rear view (Qing Dynasty Customs Site, Yadong City). 52. Outer gonostylus, lateral external view. 53. Inner gonostylus, lateral external view. Scale bars = 0.2 mm.