Phasia godfreyi, Sun & Marshall, 2003

Sun, Xuekui & Marshall, Stephen A., 2003, Systematics of Phasia Latreille (Diptera: Tachinidae), Zootaxa 276 (1), pp. 1-320: 80-81

publication ID 10.11646/zootaxa.276.1.1

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Phasia godfreyi


3.4.6 Phasia godfreyi   (Draber­Mo ń ko, 1964), comb. nov.

(see Draber­Mońko 1964a: 120 [figs. 1­10])

Alophora godfreyi Draber­Mońko, 1964a: 121   ; ­ Crosskey 1976: 166.


Body length: 13 mm.

MALE: HEAD. Head compressed anteriorly. Vertex 0.15 times as wide as head width; eyes separated by a distance wider than or as wide as ocellar triangle. Fronto­orbital plate yellow, yellow pruinose, 10­13 rows of hairs laterally (reaching to eyes). Frontal vitta parallel, orange red. Frontal vitta at base of antennae 0.4 times as wide as fronto­orbital plate anteriorly. Ocellar setae present but fine; outer vertical setae absent; inner vertical setae absent. Face yellow, yellow pruinose. Parafacial yellow, yellow pruinose, bare, 4.5­ 5.0 times as wide as first flagellomere. Lower margin of face perpendicular, not projecting; orange yellow, yellow pruinose. Vibrissa well differentiated; intervibrissal distance 0.75 times distance between vibrissa and eye on same side; facial ridge with bristles on lower 2/ 5. Gena yellow, yellow pruinose; hairs white; height 0.13 times eye height. Lunule black and shining; sublunular bulla indistinct. Antenna pedicel yellow or brown, first flagellomere black; first flagellomere 1.6 times as long as pedicel; arista thickened on basal 0.33. Length of oral opening 1.6 times its width. Occiput flattened, white pruinose; hairs white. Palpus yellow.

THORAX. Mesoscutum pruinose; 4 black longitudinal vittae, median two vittae merged on postsutural area, with fine black hairs. 0+1 acrostichal seta; 0+1 dorsocentral seta; 1 postpronotal seta; presutural supra­alar seta present, strong; 1 postsutural intra­alar seta; 2 notopleural setae; 1 supra­alar seta; 2 postalar setae. Pleuron grey and yellow pruinose; hairs white and yellow. Anepimeral setae hair­like, white and yellow; 0 katepisternal seta; 11­13 meral setae (yellow). Scutellum yellow and brown, 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 white with light brown infuscation. Wing base without scale­like setae. Tegula black. Basicosta brown. Wing pictured, broad; petiole of apical cell 0.18­2.0 times as long as preceding section of R 4+5; M meeting R 4+5 at acute angle. Halter brown. LEGS. Fore femur yellow, with white or yellow hairs. Fore tibia brown, with 3 a, apically with 1 d. Fore tarus slightly flattened, brown. Fore claws yellow. Pulvilli yellow. Mid femur yellow, with whitish yellow hairs. Mid tibia brown to black, with 2 a, 1 v and 3 p, apically with 1 v. Hind femur yellow, with whitish yellow hairs; scale­like setae absent. Hind tibia slightly arched, brown, with one row of ad.

ABDOMEN. Abdominal tergites with yellow spot or area; pruinosity present, but thin; longitudinal vitta distinctly present. Relative length of abdominal tergites I+II:III:IV: V = 1.4:1:1:0.9; relative width I+II:III:IV: V = 0.35:1:1:0.7. Hair spots of tergites IV, V indistinct. TERMINALIA. Syncercus broad, with a wide and shallow notch posteriorly. Surstylus straight downward, longer than cercus. Hypandrium shorter than phallapodeme. Epiphallus indistinct. Postgonite triangular, slightly shorter than pregonite, pointed. Phallus 1.3­1.4 times as long as hypandrium, with dense fine hairs dorsaly. Distiphallus partly sclerotized.

FEMALE. Unknown.


Alophora godfreyi Draber­Mońko, 1964   . Holotype ♂, LAOS, Ban Hat Sao, J.F. Godfrey, 1920­244 (BMNH, examined).




Phasia godfreyi   was described by Draber­Mońko in 1964 based a single male specimen. No other specimen has been found. The holotype is in poor condition, antennae, right fore leg missing, both wings and abdominal segment V broken, and genitalia kept on a separate slide. Draber­Mońko's description and figures are, however, very detailed. Phasia godfreyi   is similar to Phasia hemiptera   , but it can be separated from the latter by the distribution of setae, the width of the frons, the pruinosity of the mesonotum, the colour of the pleurae and legs, the structure of terminalia. Draber­Mońko hypothesized "it is probable that A. hemiptera (Fab.)   (= Phasia hemiptera   ) does not transcross the boundary of Palaearctic, the species from Laos being thus geographically isolated from it".


Royal British Columbia Museum - Herbarium














Phasia godfreyi

Sun, Xuekui & Marshall, Stephen A. 2003

Alophora godfreyi Draber­Mońko, 1964a: 121

Crosskey, R. W. 1976: 166
Draber-Monko, A. 1964: 121