Cothornobata longigonitea Li, Marshall & Yang, 2015, sp. nov.
Creators: name: Li, Xuankun
name: Marshall, Stephen A.
name: Yang, Ding
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Micropezidae
Cothornobata
Cothornobata longigonitea

description: 13. Cothornobata longigonitea sp. nov.
(Figs. 16, 17)
Diagnosis. Wing discal band anterior to R4+5. Arms of genital fork convergent on distal 1/3, widest point across arms almost twice as wide as base at midpoint; basal tubercle absent. Pregonite long and slender, needle-like. Postgonite narrow and directed posteriorly, apex cuspate.
Description. Male. Body length 8.5–11.0 mm, wing length 6.5–8.0 mm.
Head mostly subshiny blackish-brown with very thin gray pollinosity. Frontal vitta brown but dark yellow at apex, densely microsetulose, about 2/3 width of frons; lower orbital plate dull pollinose; ocellar triangle black; median occipital sclerite with a small dark yellow spot at middle; lunule yellow; face pale yellow, densely microsetulose; gena yellow, lightly pollinose; clypeus uniformly dark brown, shiny. Setae and setulae on head black; postgena with 1 strong seta at lower margin. Antenna brownish-yellow; first flagellomere 1.6X as long as broad; pedicel with 1 ventral apical seta nearly length of first flagellomere; arista nearly 3.6X length of first flagellomere, brown with yellow base, and long pubescent with distal half bare. Proboscis dark yellow with brownish-yellow apex, setulae brown. Palpus dark yellow, setulae black.
Thorax black, lightly pollinose. Scutellum slightly convex, angled dorsally. Setae on thorax black, setulae blackish; katepisternum with 3 strong setae.
Legs mostly dark yellow, except mid and hind coxae brown, apical 1/2 of fore femur black, mid and hind femora with blackish-brown apex; fore tibia black, mid and hind tibiae with brownish-yellow to brown, darker at base and apex; tarsi blackish-brown, except mid basitarsus pale yellow with blackish-brown tip.
Wing light brown with distal and discal bands brown; distal band basal to middle of distal section of M1; discal band along M1 and anterior to R4+5, basal to middle of penultimate section of M1. Bm-cu in line with CuA2, A1+CuA2 2.4X as long as CuA2; distance between apex of R2+3 and R4+5 0.5X as long as M1 beyond dm-cu (Fig. 16 C). Halter yellow with brownish-yellow base.
Abdomen mostly blackish-brown, lightly pollinose, tergites 2–5 pale yellow with pale gray pollinosity apically. Pleuron pale gray. Epandrium blackish-brown. Genital fork brown with blackish-brown to black setulae; arms strongly divergent basally and convergent on distal 1/3, widest point across arms almost twice as wide as base at midpoint; basal tubercle absent; medial tubercle strong, broadly convex (Fig. 16 D). Distiphallus inflated apically, glans absent. Pregonite long and slender, needle-like. Postgonite narrow and directed posteriorly, apex cuspate (Fig. 16 GH).
Female. Body length 10.0–11.0 mm, wing length 8.0– 8.5 mm. Tergites 1–5 dull, pruinose blackish-brown with pale gray pollinosity apically; tergite 6 and oviscape shiny. Oviscape 1.4X length of tergite 6, blackish-brown with short blackish-brown setulae.
Type material. HOLOTYPE: CHINA, Yunnan Province: Baoshan, Baihualing, Wenquan, 1500 m, 29.v.2007, Xingyue Liu (♂, CAU). PARATYPE: CHINA, Yunnan Province: same data as holotype (1 ♂, 4 ♀, CAU); Baoshan, Baihualing, 12.v.2012, Yuanye Liu (1 ♂, CAU); Baoshan, Baihualing, 12.v.2012, Wenliang Li (2 ♂, CAU); Baoshan, Baihualing, 12.v.2012, Feiyang Liang (1 ♂, CAU).
Distribution. Oriental: China (Yunnan).
Remarks. Cothornobata longigonitea is similar to C. nigrigenu Enderlein, but differs in having a discal band anterior to R4+5, a slender and needle-like pregonite and a narrow, posteriorly directed, apically cuspate postgonite. C. nigrigenu has a wing discal band posterior to R4+5, an apically cuspate pregonite and a twisted, corkscrew-like postgonite.
Etymology. The specific name refers to the very long pregonite.
description: Published as part of Li, Xuankun, Marshall, Stephen A. & Yang, Ding, 2015, A review of the Oriental species of Cothornobata Czerny (Diptera, Micropezidae, Eurybatinae), pp. 201-246 in Zootaxa 4006 (2) on pages 229-233, DOI: 10.11646/zootaxa.4006.2.1, http://zenodo.org/record/243797