Phasia barbifrons ( Girschner, 1887 )

Sun, Xuekui & Marshall, Stephen A., 2003, Systematics of Phasia Latreille (Diptera: Tachinidae), Zootaxa 276 (1), pp. 1-320 : 48-50

3.3.1 Phasia barbifrons ( Girschner, 1887)

(Figures I­10, II­6.4)

Alophora (Hyalomyia) barbifrons Girschner, 1887: 36 .

Hyalomyia barbifrons: Dupuis 1955: 89­93 ­ 1963: 105.

Alophora (Barbella) barbifrons: Draber­Mońko 1965: 185 (redescription).

Phasia (Phasia) barbifrons: Herting 1984: 168 (catalog) ­ Herting and Dely­Draskovits 1993: 410 (catalog).

DESCRIPTION

Body length: 3­5 mm.

MALE: HEAD. Head spherical or nearly so. Eyes separated by a distance slightly larger than or as wide as single ocellus. Fronto­orbital plate black, conspicuously swollen, grey pruinose (thinly), several rows of hairs laterally (reaching to eyes). Frontal vitta triangular, black. Frontal vitta at base of antennae 0.8­0.9 times as wide as fronto­orbital plate anteriorly. Ocellar setae strong; outer vertical setae present; inner vertical setae present. Face black with grey pruinosity. Parafacial black with grey pruinosity, haired; 1­1.2 times as wide as first flagellomere. Lower margin of face black, projecting, visible in profile, grey pruinose. Vibrissa well differentiated; intervibrissal distance 1.4­1.6 times distance between vibrissa and eye on same side; facial ridge with bristles on lower 5/8. Gena black with grey pruinosity; hairs black; height 0.13­0.15 times eye height. Lunule normal; sublunular bulla indistinct. Antenna black; first flagellomere 1.2­1.3 times as long as pedicel; arista thickened on basal 0.4­0.5. Length of oral opening 1.4­1.6 times its width. Occiput flattened, greyish yellow pruinose; hairs black. Palpus black.

THORAX. Mesoscutum shining, without pruinosity, with fine black hairs. 0+1 acrostichal seta; 1+2 dorsocentral setae; 2 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 without scale­like setae. Anepimeral setae medium size; black. 2 katepisternal seta. 5­8 meral setae. Scutellum black; shining, without pruinosity, with two pairs of marginal setae; apical setae present and distinct; on apex; 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 black. Wing hyaline, narrow; petiole of apical cell 0.3­0.35 times as long as preceding section of R 4+5; M meeting R 4+5 almost at right angle. Halter yellow or brown. LEGS. Fore femur black; hairs black. Fore tibia black; 0 ad; 0 a; 0 av; 0 v; 0 pv; 0 p; 0 pd; 1 d (apical). Fore tarus black. Fore claws black; 0.9­1 times as long as fifth tarsomere. Pulvilli black. Mid femur black; hairs black. Mid tibia black; 2 ad (1 apical); 1 a (apical); 1 av (apical); 1 pv (apical); 2 p (1 apical); 0 pd; 2 v (1 apical); 1 d (apical). Hind femur black; hairs black; scale­like setae absent. Hind tibia black; with 5 ad, 4 pd, 0 v. ABDOMEN. Abdominal tergites black, with thin grey pruinosity only. Relative length of abdominal tergites I+II:III:IV:V = 1.2:1:1:1.1; relative width I+II:III:IV:V = 0.5:1:1:0.6. Hair spots indistinct. TERMINALIA. Syncercus with a shallow notch posteriorly and a pair of hooks posteroventrally. Surstylus flattened, longer than cercus. Ejaculatory apodeme small, knob­like. Hypandrium as long as phallapodeme. Postgonite long, pointed. Pregonite reduced, but broad, with sparse hairs dorsally. Phallus slender, 1.2­1.3 times as long as hypandrium, with fine hairs dorsally. Distiphallus not well sclerotized.

FEMALE. Body size sometimes smaller than male. Wing hyaline. Eyes touching. Anterior spine­like setae of hind tibia absent. Sternite VII (sheath) longer than sternite VI; thin, broadly flattened; broad apically; slightly bent, apex directed ventrally; almost smooth ventrally. Ovipositor slightly bent downward.

TYPE MATERIAL

Alophora (Hyalomyia) barbifrons Girschner, 1887 . Syntype, 1♀, 'Ex Girschner Collection/C.J. Wainwright Collection, B.M.1948­488' (BMNH, examined).

OTHER MATERIAL EXAMINED

AUSTRIA. Sonnblickgruppe, Südseite, subalpin, H. Franz (1♀, CNCI). CHINA.

Shanxi Prov., Mianshan, 20.viii.1982, N. Liu (1♀, IZAS); Tibet, 1983. Y. Han (1♀, IZAS). FRANCE. Richelieu, 17.vi.1962, on flowers of Chaerothyllum temulum, (1♀, USNM); Richelieu, 3.ix.1964, on flowers of Angelieu sylvestris , (1♂, USNM). SLOVAKIA. Bratislava, Malé Karpaty, 31.viii.1990, Tschorsnig (1♂ 1♀, DEBU). SPAIN. Prov. Lérida, Vall d'Aran, Artien, 29.vi.1992, Tschorsnig (1♀, GUC). SWITZERLAND. Grengiols, Wallis, 30.viii. 1963, ex: Mesnil Collection (1♂, CNCI). VIETNAM. Lai Chau Prov., Mt. Phang Si Pang, N. Ridg., 1,970m, 8.x.1995, H. Kurahashi (1♂, NIHJ).

HOST

Unknown.

NOTES

Phasia barbifrons (Girschner) occurs in Austria, France, Germany, Switzerland, Poland, Russia (Far East) ( Draber­Mońko 1965: 181 and Herting 1984: 168), Spain, Slovakia, China and Vietnam.