Teuchophorus fulvescens, 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 : 220-222

Species 50: Teuchophorus fulvescens sp. nov. (male)

(figures 188–191)

Etymology. Lat. fulvescens , ‘brownish yellow’.

Diagnosis. Large species, without stigma. Thorax and scutellum brownish yellow, with a large, roundish shining metallic green area on hinder part of mesoscutum. Eyes broadly separated. Antenna yellow; third segment deeper than long. Acr uniseriate. Legs and coxae yellow, feebly bristled.

Material examined. Type material: Thailand: Satun province, Pak Bara , rocks on beach, 28 October 1997,    male and      two males (No. 97136, leg. P. Grootaert) .

Male

Body length 1.9 mm; wing length 1.5 mm.

Head. Frons and face with shining dark metallic green ground colour. Face broad, as wide as depth of third antennal segment. Palpi blackish, with rather long hairs, each with a black apical bristlet. Rostrum brown. Occiput shining blackish green. Chaetotaxy as usual; vertical and ocellar bristles rather long and strong; two very short, thin postocellars. Postoculars uniseriate, brown. Antenna (figure 188): yellow; apical margin of second segment brownish. Second segment with short marginal bristlets, that are longest above. Third segment short, a little deeper than long, with a downward shifted, blunt apex. Arista more than three times as long as antenna, shortly pubescent; basal aristal segment shorter than third antennal segment.

Thorax. Thorax and scutellum brownish yellow. Mesoscutum with a large, roundish, shining metallic green area on flattened posterior half. Mesopleura brown, with greenish gloss. Chaetotaxy as usual; acr uniseriate, relatively long. Scutellum with a tiny hairlet at each side. Propleura with two short hairs.

Legs. Legs, including coxae, yellow; dorsal surface of hind femur, and hind tibia and tarsus feebly browned.

Fore leg. Coxa anteriorly with short, brownish hairs, that become longer and bristle-like towards apex of coxa. Femur without bristles. Tibia slightly shorter than femur, with a short anteroventral serration. First tarsal segment with two minute black spinules at ventral base. Length of tibia and tarsal segments (in mm): 0.45: 0.27:0.1: 0.08:0.06:0.08.

Mid leg. Coxa exteriorly with a row of brownish hairs that become longer and bristle-like downwards. Femur anteroventrally with a row of slightly lengthened hairs; one preapical av. Tibia a little longer than femur; two ad, one pd; a row of short ventral bristlets on apical half. Length of tibia and tarsal segments (in mm): 0.7:0.3: 0.2:0.15:0.08: 0.07.

Hind leg (figure 189). Coxa with a thin black exterior bristle. Femur with a weak preapical pv, preceded by a few slightly lengthened hairs. Tibia about as long as femur; one weak ad at basal third; three weak dorsal bristles; a short and weak ventral bristle at one-third. Length of tibia and tarsal segments (in mm): 0.7:0.13:0.25: 0.15:0.09:0.08.

Wing. Wing (figure 190) hyaline, very feebly brownish tinged. No stigma; costa not thickened. r4+5 and m1+2 more or less parallel. Length ratio of basal and apical parts of m1+2 about 8:15. Halters yellow. Squamae yellow, with narrow brownish border, and yellowish cilia.

Abdomen. Terga glossy dark brown. Venter largely translucent yellow; sterna narrow, brownish, with short hairs. Hairs and hind-marginal bristlets on terga short, black. Hypopygium (figure 191) rather large, brownish yellow, with dark surstyli.

Female Unknown.