Phasia transvaalensis Sun

Sun, Xuekui & Marshall, Stephen A., 2003, Systematics of Phasia Latreille (Diptera: Tachinidae), Zootaxa 276 (1), pp. 1-320: 111-112

publication ID 10.11646/zootaxa.276.1.1

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scientific name

Phasia transvaalensis Sun

sp. nov.

3.4.18 Phasia transvaalensis Sun   , sp. nov.

(Figures I­62.6­10, II­1.1)


Holotype ♂, [ SOUTH AFRICA], Transvaal, Johannesburg, i.1971 (BMNH).


Body length: 8.5 mm.

MALE: HEAD. Head compressed anteriorly. Eyes separated by a distance almost as wide as ocellar triangle. Fronto­orbital plate black, greyish yellow pruinose, 4­6 rows of hairs laterally. Frontal vitta black, divergent. Frontal vitta at base of antennae 1.6 times as wide as fronto­orbital plate anteriorly. Ocellar setae present but fine; outer vertical setae present; inner vertical setae absent. Face black, yellow pruinose. Parafacial black, yellow pruinose, bare, 1.5 times as wide as first flagellomere. Lower margin of face perpendicular, not projecting, orange yellow, yellow pruinose. Vibrissa well differentiated; intervibrissal distance 1.1 times distance between vibrissa and eye on same side; facial ridge with bristles on lower 1/4. Gena black, greyish yellow pruinose; hairs white; height 0.12 times eye height. Lunule normal; sublunular bulla indistinct. Antenna black; first flagellomere 1.2 times as long as pedicel; arista thickened on basal 0.2. Length of oral opening 2.4 times its width. Occiput flattened, white pruinose; hairs white. Palpus brown.

THORAX. Mesoscutum thinly pruinose, without black longitudinal vitta, with fine black hairs. 0+1 acrostichal seta; 0+1 dorsocentral seta; 1­2 postpronotal setae; presutural supra­alar seta present, but fine; 1 postsutural intra­alar seta; 2 notopleural setae; 1 supraalar seta; 2 postalar setae. Pleuron thinly grey pruinose; hairs black and brown. Anepimeral setae medium size, black. 2 katepisternal setae. 12­14 meral setae. Scutellum black; thinly grey pruinose, with two pairs of marginal setae; apical setae present and distinct; discal setae randomly arranged, not in rows. Subscutellum not very prominent. WING. Lower calypter brown to black. Wing base without scale­like setae. Tegula black. Basicosta brown. Wing pictured, narrow; petiole of apical cell 0.21­0.22 times as long as preceding section of R 4+5; M meeting R 4+5 at acute angle. Halter yellow. LEGS. Fore femur black; hairs black. Fore tibia black, without bristles, apically with 1 pv, 1 p and 1 d. Fore tarus black. Fore claws brown, apex black, 1.1 times as long as fifth tarsomere. Pulvilli broad black. Mid femur black; hairs black. Mid tibia black, apically with 1 av, 1 pv, 1 pd and 1 d. Hind femur black; hairs black; scale­like setae absent. Hind tibia black, with 8­10 ad and 4­6 pd.

ABDOMEN. Abdominal tergites brown, with wide black longitudinal vitta; pruinosity yellowish silvery. Relative length of abdominal tergites I+II:III:IV: V = 1.4:1:1:1; relative width I+II:III:IV: V = 0.5:1:1:0.8. Tergites I+II, III pruinose. Tergite IV almost not pruinose; hair spots indistinct. Tergite V silvery pruinose, even. TERMINALIA. Syncercus broad, deeply U­notched posteriorly; apex bent ventrally. Surstylus longer than cercus; apex flattened laterally. Ejaculatory apodeme long, apex broadened and flattened. Hypandrium broad, shorter than phallapodeme. Epiphallus indistinct. Pregonite reduced. Postgonite well developed, strongly bent ventrally, not haired. Phallus long and broad, over 2 times as long as hypandrium; haired dorsally on basal 1/4. Distiphallus swollen, not sclerotized.

FEMALE: Unknown.




This specific name is derived from the type locality, Transvaal, South Africa.


Royal British Columbia Museum - Herbarium