Cothornobata longifurca 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 longifurca

description: 6. Cothornobata longifurca sp. nov.
(Fig. 8)
Diagnosis. Fore tibia yellow to brown, darker at base and apex. Bm-cu proximal to CuA2. Genital fork with basal and medial tubercles subquadrate, medial tubercle on basal 1/3 of arm; inner surface of arms parallel basally, apex of arm not inflated.
Description. Male. Body length 9.0 mm, wing length 6.0 mm.
Head mostly subshiny blackish-brown with very thin gray pollinosity. Frontal vitta brown, densely microsetulose, about 3/5 width of frons; lower orbital plate dull pollinose; ocellar triangle black; lunule dark yellow; face yellow, densely microsetulose; gena light brown, lightly pollinose; clypeus mostly blackish-brown but brown laterally, shiny. Setae and setulae on head black; postgena with 1 strong seta at lower margin. Antenna pale yellow; pedicel with 1 ventral apical seta nearly length of first flagellomere; first flagellomere 1.7X as long as broad; arista nearly 3.6X length of first flagellomere, brown except base yellow, bare. Proboscis yellow with brownish-yellow apex, setulae brown to black. Palpus yellow but brown on apical 1/2, setulae black.
Thorax blackish-brown, with pale gray pollinosity. Scutellum slightly convex, angled dorsally. Setae on thorax black, setulae blackish; katepisternum with 3 strong setae.
Legs mostly yellow, except mid and hind coxae brown, fore femur blackish-brown on apical 3/10, mid and hind femora with blackish-brown apically; fore tibia almost brown, mid and hind tibiae brown at base and apex; tarsi brown, except mid basitarsus pale yellow with 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 but posterior to R4+5, basal to middle of penultimate section of M1. Bm-cu proximal to CuA2, A1+CuA2 2.4X as long as CuA2; distance between apex of R2+3 and R4+5 0.6X as long as M1 beyond dm-cu (Fig. 8 C). Halter pale yellow with brown base.
Abdomen brown with pale gray pollinosity. Pleuron uniformly pale gray. Epandrium dark brown. Genital fork brown to dark brown, with blackish-brown to black setulae, basal and medial tubercles bearing a cluster of short black setulae; basal and medial tubercles subquadrate, medial tubercle on basal 1/3 of arm; inner surface of arms parallel basally, apex of arm not inflated (Fig. 8 D). Distiphallus terminating in curved filaments, not inflated apically. Pregonite expanded. Postgonite narrow and apically out-turned (Fig. 8 GH).
Female. Unknown.
Type material. HOLOTYPE: CHINA, Guangxi Province: Nanning, Daming Mountain, 29.v.2011, Tingting Zhang (♂, CAU).
Distribution. Oriental: China (Guangxi).
Remarks. Cothornobata longifurca is similar to C. cyanea (Hendel, 1913), but differs as follows: fore tibia yellow to brown, darker at base and apex; bm-cu proximal to CuA2; genital fork with basal and medial tubercles subquadrate, medial tubercle on basal 1/3 of arm; inner surface of arms parallel basally, apex of arm not inflated. Cothornobata cyanea has the following contrasting character states: fore tibia black; bm-cu in line with CuA2; genital fork with the basal tubercle irregular in shape with several small tubercles, medial tubercle finger-like, medial tubercle at midpoint of arm; inner surface of arms convergent basally, apex of arm slightly inflated.
Etymology. The specific name refers to the long genital fork.
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 217-219, DOI: 10.11646/zootaxa.4006.2.1, http://zenodo.org/record/243797