Diplonevra corniculata Liu & Yang, 2016, sp. nov.
Creators: name: Liu, Guang-Chun
name: Yang, Meng
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Phoridae
Diplonevra
Diplonevra corniculata

description: Diplonevra corniculata sp. nov.
(Figs. 11, 12, 38, 54)
Male: Head. Frons black, with 20–30 scattered hairs. Mean frontal width 0.51 of head width. First row of bristles slightly convex, antial bristles further apart than either is from an anterolateral. Second row of bristles concave, pre-ocellars further apart than either is from a mediolateral. Supra-antennal bristles well below antials and close each other. Postpedicel brown dorsally and yellow ventrally, spherical with pointed tip. Arista brown. Palpus yellow and 2.5 times as long as its breadth, with 6–7 bristles on ventral apex. Proboscis pale yellow. Thorax. Scutum and scutellum black. Pleuron black brown, tomentose, shiny. Notopleuron with 4 bristles. Scutellum with 4 bristles. Legs brown. Front tibia with a dorsal bristle two fifths of length from base and with 8–10 small differentiated hairs extending below this to the tip. Mid tibia with 2 longitudinal hair palisades, anterodorsal one sharply deflected onto anterior face and extending to 2/3 (0.68) of tibia. Posterior face of hind trochanter with 3 bristles laterally. The base of hind femur extending rewards and forming a horn-like tip which bearing 3 bristles closed each other, lacking ascending process. Hind tibia with 2 stout, anterodorsal bristles, lacking anteroventral bristles. Wing 2.74 mm long. Costal index 0.56. Costal ratios 3.7: 2.0:1. Costal cilia 0.04–0.05 mm long. Vein M1 curved. Axillary ridge with 4 axillary bristles. All veins brown and membrane yellowish brown. Haltere pale brown. Abdomen. Tergites dark brown except tergite 1 and anterior half of tergite 2 pale yellow, with small hairs on tergites 1 to 5, but longer hairs on tergite 6. Venter brown. Hypopygium brown. Left side of epandrium narrow, finger-like, with 6–8 long hairs. Right side of epandrium broad, with about 14–18 long hairs toward posterior margin; ventral apex with an incurved hook. Hypandrium tomentose. Anal tube long. Circus and stalk of circus pale yellow. Body length 3.0 mm.
Female. Unknown.
Distribution. China (Guizhou, Hainan).
Etymology. The specific epithet refers to the horn-like base of hind femur.
Holotype: ♂, Guizhou, Leigong Mountain (26°23′N, 108°12′E), 2–Aug–2015, Chaoyi Zhang; Paratypes: 1♂, Guizhou, Leigong Mountain (26°23′N, 108°12′E), 2–Aug–2015, Zhiqiang Cheng; 1♂, Guizhou, Leigong Mountain (26°23′N, 108°12′E), 2–Aug–2015, Zhiqiang Cheng; 1♂, Guizhou, Leigong Mountain (26°23′N, 108°12′E), 3–Aug–2015, Lixin Su; 1♂, Guizhou, Leigong Mountain (26°23′N, 108°12′E), 1–Aug–2015, Lixin Su; 1♂, Guizhou, Leigong Mountain (26°23′N, 108°12′E), 1–Aug–2015, Lixin Su; Hainan, Jianfeng (18°41′N, 108°59′E), 28–May–1993, Yongsheng Cui.
Remarks. In the key to palaearctic species of Diplonevra (Schmitz 1949) the species runs to couplets 5 to D. florescens, but it can be easily distinguished by the horn-like base of hind femur.
description: Published as part of Liu, Guang-Chun & Yang, Meng, 2016, A taxonomic revision of the genus Diplonevra Lioy (Diptera: Phoridae) from China, pp. 31-51 in Zootaxa 4205 (1) on pages 37-38, DOI: 10.11646/zootaxa.4205.1.3, http://zenodo.org/record/192532