Teuchophorus ornatulus, Meuffels & Grootaert, 2004

Meuffels, Henk & Grootaert, Patrick, 2004, The genus Teuchophorus in South-East Asia and New Guinea, description of new species, species-groups and their phylogeny (Insecta, Diptera, Dolichopodidae), Journal of Natural History 38 (2), pp. 143-258 : 150-152

Species 2: Teuchophorus ornatulus sp. nov. (male)

(figures 2–6)

Etymology. Lat. ornatulus , ‘rather adorned’.

Diagnosis. Rather large species. Eyes touching on face. Costa not thickened. Third antennal segment short, wider than long. Mid tibia bent, narrowed directly after its middle, with a long flattened ventral bristle. Mid femur with two very long, coagulated bristly hairs near base. Fore femur without bristles. Hind femur with a row of short anteroventral hairs. Posterior wing border without bristles (usual fringe).

Material examined. Type material: Thailand, Trang province: Palian , banks of an river in a gallery forest,    male, 32      male (No. 97153, leg. P. Grootaert) .

Male

Body length 1.5–1.9 mm; wing length 1.35–1.5 mm.

Head. Frons broad, with shining dark metallic green ground colour. Eyes touching each other, leaving from face two triangles, with shining dark metallic green ground colour. Palpi black, each with a short, black apical bristle. Rostrum dark brown. Occiput dark metallic green, moderately shining. Chaetotaxy as usual; two minute, thin postocellars. Postocular cilia uniseriate, black. Antenna short, black; third segment dark brown. Third segment (figure 3) wider than long, with a short, downward shifted, rather blunt tip. Arista dorsal, shortly pubescent, about three times as long as antenna.

Thorax. Thorax and scutellum with shining dark metallic green ground colour; pleurae partly dull dark brown. Chaetotaxy as usual; acr uniseriate. Scutellum without lateral hairs. No propleural bristles.

Legs. Legs yellow; apical third of hind femur usually feebly browned; hind tibia sometimes brownish yellow; hind tarsus brown. Fore coxa yellow; hind and mid coxae usually brownish, with yellow tips, but in some specimens largely yellow.

Fore leg. Coxa anteriorly with short, yellow hairs, that grow longer towards apex of coxa. Femur without bristles, apart from a weak, thin, hair-like preapical pv. Tibia a little shorter than femur, without bristles or serration. Length of tibia and tarsal segments (in mm): 0.45:0.2: 0.08: 0.06:0.05: 0.06.

Mid leg. Coxa antero-exteriorly and at tip with a row of short bristly hairs. Femur (figure 2) ventrally at one-quarter from base with two very long bristly hairs, the longest of which is more than twice as long as depth of femur, implanted very near to each other, partly coagulating; just in front of these hairs, slightly more anteroventrally, a much shorter bristly hair; on apical third two short, weak, hairlike ventral bristles, preceded by a row of short hairs; a fairly well-developed preapical av and a weaker preapical pv. Tibia (figure 2) about as long as femur, ventrally before middle slightly bulging, at middle abruptly narrowed and feebly bent, evenly thickening from there again towards tip; posteroventrally on the bulging basal half a crowding of rather long, bent, hair-like bristles; in front of middle one ad and one pd; just beyond middle, on the narrow part of tibia, a long, straight, partly flattened bristle, arising from a short papilla; a rather short, but strong av at apical fifth; a long and strong preapical ventral bristle, and a short preapical dorsal bristle. First tarsal segment with a small ventral bristlet at base. Length of tibia and tarsal segments (in mm): 0.52:0.2: 0.15: 0.13:0.1: 0.08.

Hind leg. Coxa with a thin, black exterior bristle. Femur anteroventrally on apical two-thirds with a row of short hairs; a preapical av and a preapical pv. Tibia about as long as femur; two rather weak dorsal bristles on apical half; some of the dorsal hairs may be slightly lengthened; anteroventrally on basal three-fifths a row of thin, stiff hairs, the longest of which (beyond middle) are longer than diameter of tibia; posterodorsally and posteroventrally rows of very short hairs, giving a spinulous impression. Length of tibia and tarsal segments (in mm): 0.65: 0.13:0.24:0.15: 0.1:0.09.

Wing. Wing (figure 4) hyaline, very feebly brownish tinged. Costa hardly thickened. r4+5 and m1+2 more or less parallel. A short anal vein (mostly as a fold). Halters yellow. Squamae yellow, with a broad brown margin, and with yellow cilia.

Abdomen. Abdomen dorsally shining dark metallic green. Sterna brownish. Hairs and hind-marginal bristlets on terga black, short. Hypopygium (figure 5) relatively large, brownish black; cerci small, yellowish; aedeagus (figure 6) largely swollen, with a tubiform tip.

Female Unknown.