Dolichocephala curvata Sinclair & Plant 2017, sp. nov.
Creators: name: Sinclair, Bradley J.
name: Plant, Adrian R.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Empididae
Dolichocephala
Dolichocephala curvata

description: Dolichocephala curvata sp. nov.
(Figs 2, 18)
Type material. HOLOTYPE, ♂ labelled: “THAILAND: Loei Province/ Phu Hin Rong Kla Nat. Park/ Huai Man Daeng Noi at trail/ 16°57′N 101°03′E, 1600 m / v.2002 – i.2003 [Coll. CMU Team]”; “HOLOTYPE/ Dolichocephala / curvata / Sinclair & Plant [red label]” (QSBG).
Recognition. This is a dark species with six distinct white wing spots and one faint subapical spot in cell r5, clasping cercus L-shaped and phallus with distiphallus arched, extending as membranous tube.
Description (wing length 1.9 mm). Male. Head: Slender, tapered ventrally. Clypeus and face with greyish pruinescence, less dense below ocellar triangle; occiput with pruinescent sport near base. Ocellar triangle with pair of stout upturned setae. Antenna dark brown.
Thorax: Scutum dark brown, somewhat shiny with faint pruinescent stripe along dc row. Pleura (partially obscured by legs) dark brown with whitish pruinescence. Several very minute acrostichals anterior to first dc; 5 dc; 1 pprn; 1 presut spal; 1 upper npl, lower npl very slender, short; 1 pal; 2 sctl, subequal in length with prescutellar dc. Laterotergite with several brownish setulae.
Legs: Fore coxa, femora and tibiae yellow; mid and hind coxae brown; tarsi darkening apically.
Wing: Narrow; infuscate; single long basal costal seta present; base of R4 arched, joining R5 at acutely; base of cell r4 tapered; R4 sinuous, with short auxiliary crossvein connecting to R2+3, shorter than length of base of R4; R2+3 long, ending in costa distal to base of R4; irrorations with 6 distinct spots: two spots in cell r2+3 (proximal section); one spot each in cells r4, m1, m2 and m4; faint subapical spot in cell r5. Halter pale yellow.
Abdomen: Sclerites brown, shiny, concolourous with thorax. Terminalia (Fig. 2): Hypandrium subtriangular, with 3 lateral setae. Phallus slender, slightly arched; shaft with forked apex joined distiphallus; distiphallus with sclerotized dorsal margin, extending as membranous tube ending in balloon-like inflated membranous sac. Ejaculatory apodeme slender. Epandrium oval, with numerous long setae. Clasping cercus L-shaped, base shorter than upper lobe; apex rounded with inner peg-like seta. Cercal plate with 2 long setae. Lobe of subepandrial sclerite stout, extended beyond surstylus and epandrium. Surstylus slender, apex rounded, with marginal setae.
Female. Unknown.
Etymology. The species name is from the Latin curvatus (bent, bow), in reference to the strongly curved clasping cercus.
Distribution. The only known specimen (holotype) of this species was collected at 1,600 m in Phu Hin Rong Kla National Park (Petchabun Range), northeast Thailand (Fig. 18).
description: Published as part of Sinclair, Bradley J. & Plant, Adrian R., 2017, Dolichocephala Macquart of Thailand (Diptera: Empididae: Clinocerinae), pp. 551-568 in Zootaxa 4358 (3) on page 554, DOI: 10.11646/zootaxa.4358.3.9, http://zenodo.org/record/1068858