Phasia subopaca ( Coquillett, 1897 )

Sun, Xuekui & Marshall, Stephen A., 2003, Systematics of Phasia Latreille (Diptera: Tachinidae), Zootaxa 276 (1), pp. 1-320: 107-109

publication ID 10.11646/zootaxa.276.1.1

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Phasia subopaca ( Coquillett, 1897 )


3.4.16 Phasia subopaca ( Coquillett, 1897)  

(Figures I­61, II­9.3)

Alophora subopaca Coquillett, 1897: 47   .

Euphorantha subopaca: Townsend 1938: 53   ­ Brooks 1945: 668 (redescription).

Alophorella subopaca: Sabrosky and Arnaud 1965: 968   (catalog).


Body length: 6­8 mm.

MALE: HEAD. Head spherical or nearly so. Eyes separated by a distance as wide as ocellar triangle. Fronto­orbital plate black, greyish yellow pruinose, 4­5 rows of hairs laterally. Frontal vitta black. Frontal vitta at base of antennae 0.6­0.7 times as wide as frontoorbital plate anteriorly. Ocellar setae present but fine; outer vertical setae absent; inner vertical setae absent. Face black with grey pruinosity. Parafacial black, yellow pruinose, bare, 1.1­1.2 times as wide as first flagellomere. Lower margin of face projecting, visible in profile, brown, yellow pruinose. Vibrissa well differentiated; intervibrissal distance 1.2­1.25 times distance between vibrissa and eye on same side; facial ridge with bristles on lower 1/ 3. Gena black with grey pruinosity; hairs white; height 0.1 times eye height. Lunule black and shining; sublunular bulla indistinct. Antenna black; first flagellomere 1.1­1.2 times as long as pedicel; arista thickened on basal 0.25. Length of oral opening about 2.2­2.3 times its width. Occiput flattened, white pruinose; hairs black. Palpus brown to black.

THORAX. Mesoscutum thinly pruinose, without black longitudinal vitta, with fine black hairs. 0+1 acrostichal seta; 0+1 dorsocentral seta; 1­2 postpronotal setae; presutural supra­alar seta present, strong; 1 postsutural intra­alar seta; 2 notopleural setae; 1 supraalar seta; 2 postalar setae. Pleuron thinly grey pruinose; hairs black. Anepimeral setae medium size, black; 1 katepisternal seta; 8­11 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 white with light brown infuscation. Wing base without scale­like setae. Tegula black. Basicosta brown. Wing pictured, white with light brown infuscation; petiole of apical cell 0.30­0.35 times as long as preceding section of R 4+5; M meeting R 4+5 almost at right angle. Halter brown. LEGS. Fore femur black; hairs black. Fore tibia black, with 2 p, apically with 1 p and 1 d. Fore tarus black. Fore claws black; 1.1 times as long as fifth tarsomere. Pulvilli black. Mid femur brown, upper part black; hairs black. Mid tibia black, with 1 ad, 1 p and 1 v, apically with 1 ad, 1 av, 1 pv, 1 p, 1 v and 1 d. Hind femur black; hairs black; scale­like setae absent. Hind tibia black, with one row of ad and 4­6 pd.

ABDOMEN. Abdominal tergites black; pruinosity silvery; longitudinal vitta distinct. Relative length of abdominal tergites I+II:III:IV: V = 1.2:1:1:1.1; relative width I+II:III:IV: V = 0.4:1:1:0.6. Syntergite I+II shiny, not pruinose. Pruinosity of tergite III silvery (on anterior 1/2­3/5). Pruinosity of tergite IV silvery (on anterior 3/5­4/5); hair spots indistinct. Pruinosity of tergite V evenly silvery; hair spots indistinct. TERMINALIA. Syncercus not notched posteriorly; apex slightly bent ventrally. Surstylus straight, not broadened, as long as cercus. Ejaculatory apodeme small, apex with a small hook. Hypandrium broad, slightly shorter than phallapodeme. Epiphallus well developed. Pregonite broad, inner lateral angle pointed. Postgonite broad, outer lateral angle pointed, as long as pregonite. Phallus slender, basal half haired dorsally, 1.6­1.7 times as long as hypandrium. Distiphallus partly sclerotized. Dorsolateral process bent ventrally. Ventrolateral process bent dorsally, longer than dorsolateral process.

FEMALE. Wing hyaline. Eyes separated by a distance as wide as single ocellus, not touching. Hind tibia with one row of anterior spine­like setae. Sternite VII (sheath) longer than sternite VI, tapered, narrow apically, not bent; apex straight, sternite VII with linear wrinkles ventrally. Ovipositor bent upward.


Alophora subopaca Coquillett, 1897   . Holotype ♂, [ USA], New Jersey, Woodbury, 6.7.1896 (USNM, No.3526, examined).


CANADA. Ontario: Carleton Co., Richmond (8 km S), 14­20.ix.1983, B.E. Cooper (1♂, CNCI); Ottawa,, 6.x.1943 and 20.ix.1947, A. Brooks (2♂ 1♀, CNCI); Jordan, 2.ix.1914, W.A. Ross (2♂, CNCI). Quebec: Aylmer, 28.iv. and 5.x.1924, C.H. Curran (23♂ 3♀, CNCI, AMNH); Norway Bay, 24.viii.1938, G.E. Shewell (1♂, CNCI). USA: Illinois: Chicago, 8.v.1896 (1♂, USNM). Indiana: La Fayette, and 19.x.1915, J.M. Aldrich (2♀, USNM). Maryland: Chesapeake, 17­20.ix.1914, C.T. Greene and R.C. Shannon (9♂ 6♀, USNM, BMNH); Lakeland, 6.ix.1909, F. Knab (1♂, USNM). Maine: Bar Harbor, 2.viii (1♀, USNM). Massachusetts: Forest Hills, 27.ix.1913 (1♂, USNM). Michigan: E. Lansing, (1♀, KSUC). New Hamsphire: Gorham, 19.vii.1935 (1♀, CUIC); Sturnis, 11.ix.1955, C.W. Sabrosky (1♂, USNM). New York: Buffalo, 10.5.1909, M.C. van Duzee (1♀, CASC); Callicoon, 12.vii. 1937, H. Dietrich (1♀, CUIC); East Aurora, 12.ix.1909, M.C. van Duzee (1♀, CASC); Hamburg,, M.C. van Duzee (1♂, CASC); Hemphis, 3­7.22 (1♀, CUIC); Long Island, Dix Hills,, (1♀, CUIC); Long Island, Orient, 4.ix.1953, R. Latham (1♀, USNM); Long Island, Babylon,­ 23.ix.1933, 19.ix.1934, F.S. Blanton and Borders (3♂ 6♀, CUIC); Long Island, Riverhead, Greenport and Montauk, 19.vii.1951 and 7.v.­, R. Latham (3♂, USNM); Patterson, 19.35, H. Dietrich (1♀, CUIC). New Jersey: Branchville, 23.v.1931, C.H. Curran (1♂, AMNH); Evesboro, 5.iv.1925, L.B. Parker (1♂ 1♀, CNCI); Riverton, 12.x. (1♂ 1♀, USNM). Ohio: Amherst, vii.1933, H.J. Reinhard (1♂ 1♀, CNCI); Columbus,, H.W. Allen (1♀, USNM). Pennsylvania: Harrisburg, W.R. Walton (1♂ 1♀, USNM); Highspire, 28.iv. (1♂, USNM). South Carolina: Greenville, 15.x.1916 (1♂, USNM). Tennessee: Knox Co., 6.x.1956 (1♂, USNM). Virginia: Mt. Vernum, 30.x.1926, N.K. Bigelow (1♂, CNCI); Rosslyn, 1.v.1913, R.C.Shannon (2♀, USNM); 4mi Run, 11.x.1930, Bridwell (1♀, USNM). Wisconsin: Milwaukee (1♀, USNM). Misc State: Neotomno, 14.ix.1959, Aster (1♀, USNM).


Cosmopepla bimaculata (Thomas)   ( Hemiptera   , Pentatomidae   ): ­ CANADA (ON) (new record).

Phymata americana Melin   ( Hemiptera   , Phymatidae   ): ­ CANADA (ON) (new record).


Royal British Columbia Museum - Herbarium














Phasia subopaca ( Coquillett, 1897 )

Sun, Xuekui & Marshall, Stephen A. 2003

Alophorella subopaca:

Sabrosky, C. W. & P. H. Arnaud, Jr. 1965: 968

Euphorantha subopaca:

Brooks, A. R. 1945: 668

Alophora subopaca

Coquillett, D. W. 1897: 47