Phasia rotundata Sun, 2003

Sun, Xuekui & Marshall, Stephen A., 2003, Systematics of Phasia Latreille (Diptera: Tachinidae), Zootaxa 276 (1), pp. 1-320 : 199-200

3.7.5 Phasia rotundata Sun , sp. nov.

(Figures I­52, II­3.1)

TYPE MATERIAL

Holotype ♂, [ AUSTRALIA], South Australia, 9km NW Andamooka HS., Sandhills, from flowering Acacia sp. 1 .xi.1975, J.A. Herridge (SAMA); allotype ♀, [ AUSTRALIA], New South Wales, Trangie, 10.ix.1979, P. Allsopp (QDPC), paratypes, 1♂, [AUSTRALIA], Kings Mill Ck., nr. Arkaroola homestead, 29.x.1969, G.F. Gross [malaise trap] (SAMA); 1♂, [ AUSTRALIA], New South Wales, Mount Hope, 9.x.1980, J.C. Sovef (UQIC); 1♂, [ AUSTRALIA], N. Territories, Gold Coast, Tomaklaw, 1.2.1916, Dr. J.J. Simpson (BMNH).

DESCRIPTION

Body length: 5­6 mm.

MALE: HEAD. Head spherical or nearly so. Vertex 0.22 times as wide as head width. Fronto­orbital plate black; greyish yellow pruinose, 2­3 rows of hairs laterally. Frontal vitta parallel, brown. Frontal vitta at base of antennae 4.5 times as wide as fronto­orbital plate anteriorly. Ocellar setae strong; outer vertical setae present (but fine); inner vertical setae absent. Face black, greyish yellow pruinose. Parafacial brown, greyish yellow pruinose, bare, 0.9 times as wide as first flagellomere. Lower margin of face slightly projecting, visible in profile, brown, greyish yellow pruinose. Vibrissa well differentiated; intervibrissal distance 1.8 times distance between vibrissa and eye on same side; facial ridge with bristles on lower 1/4. Gena brown to black with grey pruinosity; hairs black; height 0.15 times eye height. Lunule brown to black and shining; sublunular bulla indistinct. Antenna yellow (but dorsal of flagellomere black); first flagellomere 1.3 times as long as pedicel; arista thickened on basal 2/3. Length of oral opening 1.5 times its width. Occiput slightly convex, without distinctly pruinose; hairs white. Palpus brown.

THORAX. Mesoscutum black, thinly grey pruinose; even, without black longitudinal vitta, with fine black hairs. 0+1 acrostichal seta; 1+2(3) dorsocentral setae; 2­3 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. Anepimeral setae medium size, black; 2 katepisternal setae; 6­8 meral setae. Scutellum black, shining, without pruinosity, 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 brown. 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 almost at right angle. Halter brown. LEGS. Fore femur brown to 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, as long as fifth tarsomere. Pulvilli brown. Mid femur brown to black; hairs black. Mid tibia black, with 0­1 ad and 1 v, apically with 1 ad, 1 pv and 0­1 d. Hind femur brown to black; hairs black. Hind tibia black, slightly arched, with 4­5 ad and 3­4 pd.

ABDOMEN. Abdominal tergites spherical, reddish yellow; pruinosity absent (shining); longitudinal vitta absent. Relative length of abdominal tergites I+II:III:IV:V = 1.1:1:1:1.1; relative width I+II:III:IV:V = 0.6:1:1:0.9. Hair spots indistinct. TERMINALIA. Syncercus with a small notch posteriorly; apex bent downward. surstylus broad, slightly arched dorsally; as long as cercus. Hypandrium shorter than phallapodeme. Ejaculatory apodeme small, knob­like. Pregonite short, apex rounded. Postgonite triangular, pointed, longer than pregonite, with sparse hairs ventrally. Phallus 1.5 times as long as hypandrium, with fine hairs dorsally on basal 1/2. Distiphallus partly sclerotized.

FEMALE. Body size smaller than male. Wing hyaline. Eyes separated by a distance as wide as ocellar triangle. Anterior spine­like setae of hind tibia absent. Sternite VII (sheath) longer than sternite VI, triangular, pointed apically, not bent, apex straight, smooth ventrally. Ovipositor bent upward.

HOST

Serinetha mitellata ( Hemiptera , Coreidae ): ­ AUSTRALIA (New South Wales, pupal duration: 27.viiI.1979 ­ 10.ix.1979) (new record).

ETYMOLOGY

This specific name is from the Latin "rotundus", which refers to the spherical abdomen of this species.