Phasia nasalis ( Bezzi, 1908 ), Sun & Marshall, 2003

Sun, Xuekui & Marshall, Stephen A., 2003, Systematics of Phasia Latreille (Diptera: Tachinidae), Zootaxa 276 (1), pp. 1-320: 179-181

publication ID 10.11646/zootaxa.276.1.1

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scientific name

Phasia nasalis ( Bezzi, 1908 )

comb. nov.

3.6.12 Phasia nasalis ( Bezzi, 1908)   , comb. nov.

(Figures I­38, II­8.3)

Hyalomyia nasalis Bezzi, 1908: 384   .

Allophora nigeriensis Villeneuve, 1923: 80   .

Hyalomyia cuthbertsoni Curran, 1936: 8   .

Alophora nasalis   : ­ Emden 1945: 432 (revision).

Alophora (Alophorella) nasalis   : ­ Crosskey 1980: 824 (catalog).


Body length: 5­10 mm.

MALE: HEAD. Head spherical or nearly so. Eyes separated by a distance as wide as single ocellus. Fronto­orbital plate black with grey pruinosity, 2­3 rows of hairs laterally. Frontal vitta brown, divergent. At base of antenna, frontal vitta 2.1 times as wide as frontoorbital plate anteriorly. Ocellar setae absent, or present but fine; outer vertical setae absent; inner vertical setae absent. Face brown to black with grey pruinosity. Parafacial black with grey pruinosity, bare, and 1.1 times as wide as first flagellomere. Lower margin of face projecting, visible in profile, brown, greyish yellow pruinose. Vibrissa well differentiated; intervibrissal distance 1.1 times distance between vibrissa and eye on same side; facial ridge with bristles on lower 1/3. Gena brown and black with grey pruinosity; hairs white; height 0.1 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 2.3 times its width. Occiput slightly convex, white pruinose; hairs white. Palpus brown.

THORAX. Mesoscutum thinly grey pruinose, even, without black longitudinal vitta, with fine black hairs. 0+1 Acrostichal seta; 0+1 dorsocentral seta; 1 postpronotal seta; presutural supra­alar seta absent; 0 postsutural intra­alar seta; 2 notopleural setae; 1 supra­alar seta; 2 postalar setae. Pleuron thinly grey pruinose; hairs black, brown and white. Anepimeral setae medium size, black; 2 katepisternal setae; 7­10 meral setae. Scutellum black with grey 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 white with light brown infuscation. Wing base without scale­like setae. Tegula black. Basicosta brown. Wing pictured, narrow; petiole of apical cell 0.20­0.23 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; ventrally and laterally with whitish yellow hairs, dorsal surface with black hairs. Fore tibia brown to black, without bristles, apically with 1 pv and 1 d. Fore tarus black. Fore claws brown, apex black, 1.2 times as long as fifth tarsomere. Pulvilli brown. Mid femur brown to black; ventrally and laterally with whitish yellow hairs, dorsal surface with black hairs. Mid tibia brown to black, with 1 ad and 1 v, apically with 1 ad, 1 av, 1 pv, 1 p, 1 v and 1 d. Hind femur brown to black; ventrally and laterally with whitish yellow hairs, dorsal surface with black hairs. Hind tibia brown to black, with one row of ad and pd.

ABDOMEN. Abdominal tergites black, with yellow spot or area; pruinosity present; longitudinal vitta absent; tergites brown, with a median black longitudinal vitta. Relative length of abdominal tergites I+II:III:IV: V = 1.2:1:1:1; relative width I+II:III:IV: V = 0.5:1:1:0.8. Hair spots of tergites IV and V indistinct. TERMINALIA. Syncercus short, with a shallow notch posteriorly; apex bent ventrally. Surstylus longer than cercus, apex broad. Ejaculatory apodeme long, pointed. Hypandrium shorter than phallapodeme. Pregonite small, pointed; Postgonite longer than pregonite, haired ventrally. Phallus broad, long; haired dorsally. Distiphallus swollen, membranous.

FEMALE: Eyes touching. Anterior spine­like setae of hind tibia present. Tergites black. Sternite VII (sheath) longer than sternite VI; median part laterally flattened, apex flattened dorsoventrally, broad apically in ventral view; apex not bent, straight, almost smooth ventrally. Ovipositor bent upward.


Hyalomyia nasalis Bezzi, 1908   . Holotype, sex?, Belg. Congo, Boma (not located, not examined).

Allophora nigeriensis Villeneuve, 1923   . Syntype, 1♂, NIGERIA, Ibadan, 26.ix.1922 (BMNH, with pupae, examined).


NIGERIA. Ibadan, 23.v.­11.xii.1922 and 3.4.1923, host: Dysdercus superstitiosus   , A.W.J. Pomeroy and G.E. Bryant (18♂ 7♀, BMNH, AMNH); Yankara, Kaduna State, 13.x.1978, host: Acanthomyia tomentosicollis, P.C. Matteson   (1♀, BMNH). KENYA. Nairobi, host: Agonoscelis puberula   , (2♀, BMNH); N.A.L. 4/8/67, host: Dysdercus superstitiosus, G.R. Rens   (3♂ 1♀, BMNH). SOUTH AFRICA. Orange Free State, Bothaville, 10.1.99, Dr. Brauns (1♂, CNCI). Cape Province, Doorn R. Falls, xi.1931, A. Mackie (1♂, BMNH); Transvaal, Barberton, 6.iv.1932 and 25.iii.1931, host: Dysdercus fasciatus Sign   , (6♂ 6♀, BMNH, CNCI); Transvaal, Magaliesberg Mts., Tonkwan, 11/12/76 (2♂, BMNH); Willowmore, Capland, 1.11.1912, Dr. Brauns (2♂, NMSA, USNM). TANAZANIA. Kilosa District, 6­vi.1979, P.C. Matleson (2♂ 1♀, BMNH). ZAIRE. Bambesa, v.1934, host: Dysdercus superstitiosus, H.J. Bredo   (1♂ 1♀, MRAC); Grandajika, v.1955, host: Dysdercus superstitiosus   (2♂, MRAC). ZIMBABWE. Gatooma, host: Dysdercus faciatus   (1♂, BMNH).


Acanthomia tomentosicollis Stal   ( Hemiptera   ) ­ Nigeria (new record).

Agonoscelis versicolor (Fab.)   ( Hemiptera   ) ­ Kenya ( Emden 1945: 432).

Agonoscelis puberula   ( Hemiptera   ) ­ Kenya (new record).

Dysdercus fasciatus Sign.   , ( Hemiptera   , Pyrrhocoridae   ) ­ Zimbabwe, South Africa ( Emden 1945: 432).

Dysdercus intermedius Dist.   , ( Hemiptera   , Pyrrhocoridae   ) ­ ( Emden 1945: 432).

Dysdercus superstitiosus   F., ( Hemiptera   , Pyrrhocoridae   ) ­ Kenya, Nigeria ( Emden 1945: 432).


This species is also recorded from Zambia ( Crosskey 1980: 824).


Royal British Columbia Museum - Herbarium














Phasia nasalis ( Bezzi, 1908 )

Sun, Xuekui & Marshall, Stephen A. 2003

Alophora (Alophorella) nasalis

Crosskey, R. W. 1980: 824

Alophora nasalis

Emden, F. I. Van 1945: 432

Hyalomyia cuthbertsoni

Curran, C. H. 1936: 8

Allophora nigeriensis

Villeneuve, J. 1923: 80

Hyalomyia nasalis

Bezzi, M. 1908: 384