Phasia cana Sun, 2003

Sun, Xuekui & Marshall, Stephen A., 2003, Systematics of Phasia Latreille (Diptera: Tachinidae), Zootaxa 276 (1), pp. 1-320 : 164-165

3.6.4 Phasia cana Sun , sp. nov.

(Figures I­2.5­8, II­7.4)

Alophora nasalis Bezzi : Emdeni 1945: 432 (in part).

TYPE MATERIAL

Holotype ♀, [ SOUTH AFRICA], Transvaal, 8km NE Lake Trkhardt?, 26.x.1978, host: adult of Spilostethus pandurus (Scopoly) ( Hemiptera , Lygaeidae ), B. Hevey (BMNH); paratypes, 1♀, [ ZAIRE], Nyangwe, iv. v.1918, R. Mayné (MARC); 1♀, [ SOUTH AFRICA], Royal Natal National Park, i.1962, B. and P. Stuckenberg (NMSA); 1♀, [ TANZANIA], Old Shinyanga, 29.vi.1956, E. Burtt (BMNH); 1♀, ZIMBABWE, Mazabuka, 18.xii.1931, host: Dysdercus superstitiosus F., A.M. Aivson (BMNH).

DESCRIPTION

Body length: 9 mm.

FEMALE: HEAD. Head spherical or nearly so. Eyes almost touching. Fronto­orbital plate black with grey pruinosity, 2 rows of hairs laterally. Frontal vitta black, divergent. Frontal vitta at base of antennae 1.8­1.9 times as wide as fronto­orbital plate anteriorly. Ocellar setae present but fine; outer vertical setae present; inner vertical setae absent. Face black with grey pruinosity. Parafacial black with grey pruinosity, bare, as wide as first flagellomere. Lower margin of face projecting, visible in profile, brown, grey pruinose. Vibrissa well differentiated; intervibrissal distance 1.2 times distance between vibrissa and eye on same side; facial ridge with bristles on lower 1/4. Gena brown and black with grey pruinosity; hairs white; height 0.1 times eye height. Lunule normal; sublunular bulla indistinct. Antenna pedicel yellow or brown; first flagellomere black, 1.1 times as long as pedicel; arista thickened on basal 0.3. Length of oral opening 2.2 times its width. Occiput flattened, white pruinose; hairs white. Palpus brown.

THORAX. Mesoscutum thinly grey pruinose, without black longititude vitta, 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 thinly grey pruinose; hairs black and brown or white. Anepimeral setae hair­like, black; 2 katepisternal setae; 6­8 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 hyaline white. Wing base without scale­like setae. Tegula black. Basicosta brown. Wing hyaline, narrow; petiole of apical cell 0.3 times as long as preceding section of R 4+5; M meeting R 4+5 at acute angle. Halter brown. LEGS. Fore femur black; ventrally and laterally with whitish yellow hairs, dorsally with black hairs. Fore tibia black, without bristles, apically with 1 pv, 1 p and 1 d. Fore tarus black. Fore claws black; as long as fifth tarsomere. Pulvilli black. Mid femur black; hairs black. Mid tibia black, with 1 ad and 1 v, apically with 1 ad, 1 a, 1 av, 1 pv, 1 p, 1 pd, 1 v and 1 d. Hind femur black; hairs black. Hind tibia black, with 2 pd and 2­ 3 ad. Anterior spine­like setae present.

ABDOMEN. Abdominal tergites black, with yellow spot or area; pruinosity thinly yellowish silvery; longitudinal vitta absent. Relative length of abdominal tergites I+II:III:IV:V = 1.2:1:1:1.1; relative width I+II:III:IV:V = 0.5:1:1:0.8. Hair spots indistinct. Sternite VII (sheath) longer than sternite VI, narrow apically, bent, apex directed dorsally, smooth ventrally. Ovipositor bent upward.

MALE: Unknown.

HOSTS

Spilostethus pandurus ( Hemiptera , Lygaeidae ): ­ South Africa (new record). Dysdercus superstitiosus (F.) ( Hemiptera , Pyrrhocoridae ): ­ Zimbabwe (new record).

ETYMOLOGY

The Latin " canus " refers to the grey pruinose thorax.