Tipula (Vestiplex) butvilai sp. nov., a new crane fly (Diptera, Tipulidae) from Yunnan, China

Abstract

A new crane fly, Tipula (Vestiplex) butvilaisp. nov., is described and illustrated based on new material collected in the Nu Jiang Valley of Yunnan Province, China. The hypopygium for the most closely related species, Tipula (Vestiplex) testata Alexander, 1935, is also illustrated. A key is provided to distinguish males of the new species from those of other species in the T. (V.) bicornigera Alexander, 1938 species group.

Two new crane fly species of the subgenus Vestiplex Bezzi, 1924 (Diptera, Tipulidae, Tipula) from Yunnan and Sichuan, China, with a key to species in the immota species group

“…The immota group is close to the bicornigera species group (Starkevich et al 2019a). Both groups are characterized by an armed gonocoxite, tergite 9 with additional extensions on posterior margin, and dorsal lobe of A9S reduced.…”

“…The subgenus Vestiplex can be recognized by females having a powerfully constructed and heavily sclerotized cercus, usually with a serrated ventral margin, although margins may be smooth in some of the Asiatic species ( Alexander 1935 , 1965 ; Alexander and Byers 1981 ). The hypogynial valve is short to rudimentary, in the shape of blades or plates, or filamentous ( Starkevich et al 2019a , 2020 ).…”

“…Some species of the subgenus Vestiplex have tergite 9 of the male hypopygium forming a shallowly concave and sclerotized saucer ( Alexander 1935 ; Alexander and Byers 1981 ; Starkevich et al 2020 ), while other species have tergite 9 divided by a pale membrane at the midline, with the posterior margin of the dorsal portion simple or bearing additional lobes, ventrally membranous or terminating in a pair of plates, sclerotized processes, armatures or flattened lobes ( Alexander 1935 ; Alexander and Byers 1981 ; Men et al 2017 ; Pilipenko et al 2019 ; Starkevich et al 2019a , b ).…”

“…The subgenus Vestiplex can be recognized by females having a powerfully constructed and heavily sclerotized cercus, usually with a serrated ventral margin, although margins may be smooth in some of the Asiatic species (Alexander 1935(Alexander , 1965Alexander and Byers 1981). The hypogynial valve is short to rudimentary, in the shape of blades or plates, or filamentous (Starkevich et al 2019a(Starkevich et al , 2020. Some species of the subgenus Vestiplex have tergite 9 of the male hypopygium forming a shallowly concave and sclerotized saucer (Alexander 1935;Alexander and Byers 1981;Starkevich et al 2020), while other species have tergite 9 divided by a pale membrane at the midline, with the posterior margin of the dorsal portion simple or bearing additional lobes, ventrally membranous or terminating in a pair of plates, sclerotized processes, armatures or flattened lobes (Alexander 1935;Alexander and Byers 1981;Men et al 2017;Pilipenko et al 2019;Starkevich et al 2019a, b).…”

Four new crane fly species of the subgenus Vestiplex (Diptera: Tipulidae: Tipula) from Tibet and Yunnan, China

“…A total of 76 species and one subspecies of Vestiplex are documented in China, which are mainly associated with the Tibetan Plateu (Tibet, Sichuan, Yunnan, Qinghai and other provinces) (Oosterbroek 2021). Among them, 20 species were described in the last six years (Men et al 2017(Men et al , 2021a(Men et al , 2021b(Men et al , 2021cStarkevich et al 2019Starkevich et al a, 2019bRen et al 2021 andYang et al 2021).…”