Phasia nigromaculata Sun

Sun, Xuekui & Marshall, Stephen A., 2003, Systematics of Phasia Latreille (Diptera: Tachinidae), Zootaxa 276 (1), pp. 1-320: 44-45

publication ID 10.11646/zootaxa.276.1.1

persistent identifier

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scientific name

Phasia nigromaculata Sun

sp. nov.

3.2.10 Phasia nigromaculata Sun   , sp. nov.

(Figure I­34.5­8, II­1.1)


Holotype ♀, [ SOUTH AFRICA]. W Cape, Ceres District, N Gydo Pass, Clanwillam Rd., 1.x.1959, Stuckenberg (NMSA); paratypes, 1♀, SOUTH AFRICA, Cape, Bredasdorp National Res., 24.ix.1979, J. Londt (NMSA); 1♀, SOUTH AFRICA, Cape, Silver Sands, 2km W Betty's Bay, 23.ix.1979, J. Londt (NMSA); 1♀, [ SOUTH AFRICA], W Cape, Cape Point Nature Res., Cape Peninsula, 25.ix.1959, B. and P. Stuckenberg (NMSA).


Body length: 2.5 mm.

FEMALE: HEAD. Head spherical or nearly so. Eyes touching. Fronto­orbital plate black with grey pruinosity. Frontal vitta reddish brown, divergent. Frontal vitta at base of antennae 2 times as wide as fronto­orbital plate anteriorly. Ocellar setae strong; outer vertical setae present; inner vertical setae absent. Face black with grey pruinosity. Parafacial black with grey pruinosity; bare; 0.6 times as wide as first flagellomere. Lower margin of face strongly projecting, brown, grey pruinose. Vibrissa well differentiated; intervibrissal distance 1.8 times distance between vibrissa and eye on same side; facial ridge with bristles on lower 1/6. Gena black with grey pruinosity; hairs white; height 0.1 times eye height. Lunule black and shining. Antenna black; first flagellomere 1.2 times as long as pedicel; arista thickened on basal 0.4. Length of oral opening 2.8 times its width. Occiput flattened, white pruinose; hairs white. Palpus brown.

THORAX. Mesoscutum very thinly pruinose, with fine black hairs. 0+1 acrostichal seta; 0+1 dorsocentral seta; 2 postpronotal setae; presutural supra­alar seta present, strong; 1 postsutural intra­alar seta; 2 notopleural setae; 1 supra­alar seta; 2 postalar setae. Pleuron thinly grey pruinose; hairs black, and without scale­like setae. Anepimeral setae medium size; black. 2 katepisternal setae. 4­6 meral setae. Scutellum black; shining, without pruinosity, with two pairs of marginal setae; apical setae present and distinct, arranged in one row. Subscutellum very prominent. WING. Lower calypter hyaline white. Wing base without scale­like setae. Tegula black. Basicosta black. Wing hyaline, narrow; petiole of apical cell 0.45 times as long as preceding section of R 4+5; M meeting R 4+5 almost at right angle. Halter brown. LEGS. Fore femur black; hairs black. Fore tibia black, with 1 p, apically with 1 av, 1 pv and 1 d. Fore tarus black. Fore claws brown, apex black; 0.9 times as long as fifth tarsomere. Pulvilli brown. Mid femur black; hairs black. Mid tibia black, with 1 ad, 1 p and 1 v, apically with 1 av, 1 pv, 1 v and 1 d. Hind femur black; hairs black; scalelike setae absent. Hind tibia black, with one row of ad and pd. Anterior spine­like setae of hind tibia present.

ABDOMEN. Abdominal tergites black; pruinosity silvery; longitudinal vitta absent; syntergite I+II and median part of tergite III form a big black spot, tergites IV, V grey pruinose. Anterior spine­like setae of hind tibia present. Relative length of abdominal tergites I+II:III:IV: V = 1.1:1:1:1; relative width I+II:III:IV: V = 0.6:1:1:0.8. Hair spots indistinct. TERMINALIA. Sternite VII (sheath) longer than sternite VI; apex broadened; not bent, straight; sternite VII with linear wrinkles ventrally on apical half. Ovipositor bent upward.

MALE: Unknown.




Royal British Columbia Museum - Herbarium