Teuchophorus cteniuchus, 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 : 192-194

Species 28: Teuchophorus cteniuchus sp. nov. (male)

(figures 122–125)

Etymology. [Gr. kténion, ‘small comb’, échein, ‘to have’]: ‘bearing a small comb’.

Diagnosis. Like T. pauper sp. nov., but smaller. Hind tibia on median third with a comb of short, erect hairs. First segment of hind tarsus only a little shorter than second segment (in T. pauper slightly more than half as long).

Material examined. Type material: Indonesia, Irian Jaya: km 61.7 road Nabire to Unipo (about 10 km south of Gamey hill), 25 April 1997,    male and      six males (No. 97040, leg. P. Grootaert and Ph. Hoyois) .

Male

Body length 1.05–1.3 mm; wing length 1.1–1.15 mm.

Head. Frons and face with greenish black ground colour, rather dull. Face rather broad, nearly as wide as depth of third antennal segment. Palpi dark brown, each with a small, black apical bristlet. Rostrum brownish yellow. Occiput greenish black. Chaetotaxy as usual; two minute postocellars. Postoculars uniseriate, dark. Antenna (figure 122). First segment brownish yellow; second segment brownish yellow, broadly darkened dorsally and apically, with extremely short marginal bristlets, that are hardly longer above. Third segment brownish yellow or yellow, triangular, with rounded basal angles, and an acute apex, about as long as deep. Arista about three times as long as antenna, very shortly pubescent; basal aristal segment a little shorter than third antennal segment.

Thorax. Mesoscutum and scutellum shining dark metallic green, with a brownish hue, becoming brownish sidewards and anteriorly. Pleurae pale brown, with a feeble greenish gloss on mesopleura. Chaetotaxy as usual, but without acr; bristles brownish. Scutellum without lateral hairs. Propleura with two minute hairlets.

Legs. Legs, including coxae, yellow.

Fore leg. Coxa anteriorly with short, brownish, hair-like bristles, that are slightly longer at apex of coxa. Femur with a very short and weak preapical av. Tibia a little shorter than femur, without bristles or serration. First tarsal segment without basal spinules. Length of tibia and tarsal segments (in mm): 0.25: 0.11:0.05:0.04: 0.03:0.05.

Mid leg. Coxa anteriorly with short bristly hairs. Femur with small preapical av and pv. Tibia about as long as femur; two ad, one pd, no ventrals. Length of tibia and tarsal segments (in mm): 0.4: 0.15:0.08:0.06: 0.05:0.06.

Hind leg. Coxa with a weak, black exterior bristle. Femur (figure 123) with a very small, weak preapical av. Tibia (figure 123) nearly as long as femur; dorsally on apical half two bristles, with a few short bristly hairs in between them; just above middle another, small, bristlet may be present; anteroventrally on median third a row (‘comb’) of short, erect hairs, followed towards tip of tibia by a row of short, depressed bristly hairs. Length of tibia and tarsal segments (in mm): 0.35: 0.09:0.11:0.06: 0.05:0.06.

Wing. Wing (figure 124) feebly brownish tinged, without stigma; coxa not thickened. r4+5 and m1+2 more or less parallel. Length ratio of basal and apical parts of m1+2 about 7:12. Halters yellow. Squamae small, yellow, with a dark border and dark cilia.

Abdomen. Terga brown, feebly shining; incisions yellow. Sterna brown. Hairs and hind-marginal bristlets on terga very short, brown. Hypopygium (figure 125) brown, with dark brown surstyli.

Female Unknown.