Nepalomyia temasek, Grootaert, 2013

Grootaert, Patrick, 2013, New Nepalomyia Hollis (Diptera: Dolichopodidae) From Singapore And South Malaysia, Raffles Bulletin of Zoology 61 (1), pp. 103-116 : 110-111

Nepalomyia temasek , new species

( Figs. 16–20 )

Material examined. — Holotype male, SINGAPORE: Sime Forest , 1 Apr.2005, forest, Mal 1, (MS name: Si 898; reg. 25040, Si 898, coll. P. Grootaert).

Paratypes: 2 males, Sime Forest , 8 Apr.2005, forest, Mal 1, (reg. 25049, Si 682, coll. PG) ; 1 male, Sime Forest , 1 Apr.2005, forest, Mal 1, (reg. 25040, Si 898, coll. PG) ; 2 males, Sime Forest , 27 Apr.2005, forest, Mal 1, (reg. 25093, Si 903, coll. PG) ; 1 male, Sime Forest , 3 Jun.2005, forest, Mal 1, (reg. 25134, Si 907, coll. PG) ; 1 male, Sime Forest , 20 May 2005, forest, Mal 1, (reg. 25131, Si 911, coll. PG) ; 6 males, Sime Forest , 17 Jun.2005, forest, Mal 1, (reg. 25136, Si 912, coll. PG) .

In genbank as Nepalomyia Si 898 ( Lim et al., 2009).

Etymology. — The present species is named after the ancient name of Singapore that was Temasek or city at the sea.

Diagnosis. — Small species with triangular third antennal segment as long as wide. Tip of hypandrium very broad, darkened. Cerci longer than surstyli.

Male: Body length: 2.34 mm; wing length: 2.1 mm.

Head. Vertex brownish black, surpassing level of upper eye margin. Occiput concave. Face blackish brown, shining, parallel-sided, as wide as base of third antennal segment. Clypeus very feebly bulging out. Palpus dark brown, with a black apical bristle. Rostrum yellowish brown. Ocellar tubercle prominent. 2 strong black ocellars, 2 postverticals, nearly as long as the postocellars, but less strong; 2 tiny postocellars. Postocular bristles uniseriate, black. Antenna brown: Second segment with a circle of short marginal bristles and a long dorsal bristle. Third segment triangular ( Fig. 16 ), as long as wide. Arista 5 times as long as third segment: pubescence short in basal third, longer apically.

Thorax brown, not shining, pleurae partly somewhat lighter coloured. A shallow prescutellar flattened area. Postscutellum with a median mound. Acr biseriate, short. 5 dc (growing longer posteriad and ending in a long prescutellar). 1 long humeral and 1 shorter posthumeral, 1 short presutural, 2 short postsutural; 1 very long pre-alar; 1 very long post alar, 2 long notopleurals; scutellum with 2 strong marginals with a short hair at side. 1 long black propleural bristle, just above coxa.

Legs. Yellow with mid and hind coxae brown. Bristles and hairs black. Fore coxa anteriorly with short hairs ending in 4 long bristles near tip of coxa. Fore femur without bristles, bearing only 2 very short, hair like preapical pv. Fore tibia without bristles. Mid coxa with numerous anterior bristles and 1 very long black bristle near middle. Mid femur with a strong anterior preapical, no posterior preapical. Mid tibia: 2 ad, 2 weaker pd; 3 bristles in apical crown. Hind coxa with a black exterior bristle, only a little shorter than on mid coxa. Hind femur with an anterior preapical; no posterior preapical and no other bristles. Hind tibia with a thin and short, dorsal bristle beyond middle. A long dorsal preapical. No real apical crown of bristles, only a distinct ventral. Posterodorsal comb short ( Fig. 17 ), with a black denticle below. First segment of hind tarsus less than half as long as second segment, a little thicker than following segment; with a brown basal “spur” pointing to tibia. Claws on all legs minute, symmetrical.

Wing faintly brownish tinged with brown veins. Joint of R 2+3 and R 4+5 a little swollen. Apical part of M 3+4 about 2.5 times as long as tp. Anal vein indistinct at base. Squama brown with fan of long, black cilia. Halter with brownish knob and paler stalk.

Abdomen brown. Hairs and bristles on terga short, all marginals distinct, slightly longer as tergites are long. Sterna pale brownish with indistinct marginals. Genital capsule ( Fig. 18 ) globular, dark brown. Cerci elongate, with a strong, yellowish bristle near tip. Surstyli elongate, brown in contrast to paler cerci; about half as long as genital capsule is long. Hypandrium ( Fig. 18, 19 ) contrastingly black, not furcate, but tip rounded with two short “wings” at sides. Aedeagus ( Fig. 18, 20 ) yellowish, with a darkened tip. A long pale, epandrial bristle present, inserted on a short tubercle; with a short bristle at base.

Female: unknown.

Figures

Figs. 16–20. Nepalomyia temasek, new species: 16, antenna; 17, hind basitarsus; 18, genital capsule; 19, tip of hypandrium dorsally; 20, tip of aedeagus dorsally.