Tipula (Sivatipula) tongbiguanensis Men, 2016

Men, Qiu-Lei, Xue, Guo-Xi & Yang, Xue-Meng, 2016, Two new species of subgenusSivatipula from China (Diptera: Tipulidae: Tipula), Acta Entomologica Musei Nationalis Pragae 56 (2), pp. 805-811 : 806-809

Tipula (Sivatipula) tongbiguanensis Men , sp. nov.

( Figs 1–16 )

Type locality. China, Yunnan Province, Tongbiguan National Nature Reserve, 24°36′N, 97°36′E.

Type material. HOLOTYPE: J, ‘ China: Yunnan Province, Yingjiang County, Tongbiguan National Nature Reserve , 10. V. 2016, Guoxi Xue coll. / HOLOTYPE [red] male, Tipula (Sivatipula) tongbiguanensis sp. nov. Men det., 2016’. PARATYPE: 1J, same data as the holotype.The paratype bears the following label: ‘ PARATYPE [yellow] male, Tipula (Sivatipula) tongbiguanensis sp. nov. Men det., 2016’.

Diagnosis. General colouration yellow; antenna slightly longer than body; prescutum orange-yellow with three light brown stripes; wing pale brown with a dark brown stigma, cell sc darker than the remaining part of wing; abdomen orange with segments six and seven black; hypopygium orange, tergite nine terminating into two broad lobes in lateral angles, densely covered with black setae at apex, inner and outer gonostylus relatively small.

Description. Male. Length: body 13.2–13.4 mm (not including antenna, n = 2), wing 16.0– 16.2 mm (n = 2), antenna: 14.0– 14.2 mm (n = 2).

Head orange-yellow. Rostrum light brown, with a light brown nasus. Vertex unmarked ( Fig. 1 ). Eye black. Antenna: 12-segmented, slightly longer than body; scape light yellow, expanded apically; pedicel light yellow, short; flagellomeres black, each flagellomere cylindrical, subequal in length, with abundant black verticils. Palpus light brown.

Thorax with pronotum entirely orange-yellow ( Fig. 2 ). Prescutum orange-yellow, with three light brown stripes. Scutum, scutellum and postnotum orange-yellow ( Fig. 2 ). Pleuron entirely bright yellow ( Fig. 4 ). Legs slender, coxae and trochanters stramineous, femora stramineous with light brown tip, tibiae and tarsi light brown. Haltere with stem yellow, knob darker in coloration. Wing transparent, pale brown, cell sc darker than ground color, stigma dark brown. Rs relatively short, slightly shorter than R 3, petiole of cell m 1 subequal to m-m in length, distinctly shorter than the length of discal cell ( Fig. 3 ).

Abdomen bright yellow, segments six and seven black ( Fig. 7 ). Hypopygium orange, broad and compressed in lateral view ( Figs 5, 7–8 ). Tergite nine shallowly emarginated at posterior margin, terminating into two broad lobes in lateral angles, densely covered with black setae at apex ( Figs 6, 10 ). Sternite nine broader than tergite nine, median region of sternite nine protruded to a membranous extension ( Figs 5, 8–9 ). Outer gonostylus flattened, curved, with many black setae at apex ( Figs 9, 12–13 ). Inner gonostylus flattened, curved, apically produced into a beak in inner side, with many long hairy setae generated from outer side, the longest one longer than the length of inner gonostylus ( Figs 11, 14 ).

Semen pump with compressor apodeme V-shaped, the arms apically expanded, basally dark in coloration ( Figs 15–16 ). Posterior immovable apodeme with one arm, distinctly longer than compressor apodeme, gradually narrowing towards apex and curved cephalad in lateral view ( Fig. 15 ). Anterior immovable apodeme flattened ( Fig. 15 ). Aedeagus elongate, tubular, apically acute.

Differential diagnosis. We compared the new species with all known congeneric species based on published descriptions and illustrations, and found that it is most similar to the Indian species T. (S.) bhishma , by the presence of long lobes on tergite nine. It can be easily distinguished from the latter by the shape of outer gonostylus which lacks a finger-like rod and is equipped apically with black setae, as illustrated in Figures 12–13 (produced into a slender finger-like rod in inner margin and without black setae on apex in T. (S.) bhishma as described by ALEXANDER (1964: 105)).

Etymology. The specific epithet is an adjective derived from the Chinese spelling ‘ Tongbiguan ’ with Latin suffix ‘- ensis ’, referring to the type locality of the new species.

Distribution. China (Yunnan).

Figures

Figs 1–16.Tipula (Sivatipula) tongbiguanensis Men, sp. nov.1– head, dorsal view; 2– thorax, dorsal view; 3 – wing; 4 – thorax, lateral view, 5 – hypopygium, lateral view; 6 – lobes on hypopygium, 7 – abdomen and hypopygium, lateral view; 8 – hypopygium, lateral view; 9 – hypopygium, ventral view; 10 – tergite nine, dorsal view, 11– inner gonostylus, outer view; 12– outer gonostylus, inner view; 13 – outer gonostylus, outer view; 14 – inner gonostylus, inner view; 15 – semen pump, dorsal view; 16 – compressor apodeme, dorsal view. Abbreviations:AIA – anterior immovable apodeme, CA – compressor apodeme, i gonst – inner gonostylus, o gonst – outer gonostylus, PIA – posterior immovable apodeme, T – tergite.