Revision of the Psilota Meigen, 1822 flower flies (Diptera: Syrphidae) of Australia Young, Andrew D. Skevington, Jeffrey H. Steenis, Wouter Van Zootaxa 2020 2020-02-17 4737 1 1 127 8DJY3 Young and Ferguson Young and Ferguson 2020 [151,593,1161,1188] Insecta Syrphidae Psilota Animalia Diptera 35 36 Arthropoda species bicolor sp. nov.   Diagnosis:Face black. Hind leg simple. Abdominal tergites 1, 3 and 4 black, tergite 2 yellow, usually with posterior margin black. Body length: 7.3–12.1 mm.   Description: MALE: Head:Frons and sides of face black, densely white pollinose, face with a broad shining median stripe running from below the antennal base to the oral margin. Face and frons with white hairs, vertex with a tuft of long black hairs. Antenna orange. Eye densely haired, hairs entirely white.  Thorax:Fore femur and fore tibia mostly orange, each with an obscure, posterior dark stripe towards their apex. Mid femur mostly dark, with a thin, anterior orange stripe near the base. Mid tibia orange. Hind femur entirely dark, with two rows of strong dark setula, ventral carinate ridge absent. First tarsomere on all legs orange with a thin dark anterior margin, all other tarsomeres dark. Thorax dark brown to black, entirely shining. Pile on pleuron entirely white, metepimeron and katepimeron bare. Scutum with pile entirely white anterior to transverse suture, pile mostly dark behind transverse suture. Scutellum with pile mostly white, but with some dark pile interspersed evenly. Wing colourless, with bare areas on the anterior half of cell c and anterior one-quarter of cell bm. Halter pale.  Abdomen:Tergites 1, 3 and 4 almost entirely dark, tergites 1 and 3 sometimes with very narrowly yellow posterior/anterior margins respectively. Tergite 2 entirely yellow except for a narrow dark band on the posterior margin, not reaching the edges of the tergite. Sternites 1, 3 and 4 entirely dark. Sternite 2 entirely yellow.  Genitalia:Epandrium compact, about as long as tall. Cercus approximately triangular, slightly elongate. Outer lobe of surstylus inserted at top of inner lobe, thin and curved gradually downwards over its entire length, slightly broader and more strongly curved towards the apex. Inner lobe of surstylus straight, slightly narrowed at midlength, and smoothly rounded at apex. Phallapodeme with a small, forward facing ventral projection. Gonostylus thick, not darkened.  FEMALE:Identical except for normal sexual dimorphism.   Etymology:  Psilota bicolor  sp. nov.appears to be a Ferguson manuscript name based on the Latin adjective that has spread throughout Australian insect collections. It is here being published as a valid name for the first time and describes the bicolorous abdomen of this species.  Specimens examined:  HOLOTYPE: AUSTRALIA:  New South Wales: Warrumbungle National Park; - 31.279689 149.046797; Malaise trap;  19.X-3.XI.1997; J. Skevington, S. Winterton; UQIC_ Reg94800; ( 1♂, QM).  PARATYPES:  New South Wales:  10 kmWest of Murwillumbah, -28.331308 153.281278,  25-27.ix.1981, N.W. Rodd, AustralianMuseumK409930 ( 1♂, AM);   3 kmSW of Sandy Hollow, -32.368508 150.566889,  6.xii.1976, G. Daniels, GDCBReg_19688 ( 1♂, GDCB);  Goondiwindi, -28.539150 150.298089,  ix.1935, G.H. Hardy, Aus- tralianMuseumK407106 ( 1♂, AM);  Mona Vale, -33.675961 151.306533,  14.x.1973, P. Colman, AustralianMu- seumK409931-409932 ( 2♂♂, AM);   Queensland:  30 mi.W Collinsville, -20.578364 147.374953,  12.ix.1950, E.F. Riek, USNM_ ENT249845( 1♂, ANIC);  Brisbane, Mt. Coot-tha, -27.483333 152.95, 27°29’S 152°57’E,  170m, Hilltopping,  10.viii.1997, J. & A. Skevington& S. Winterton, UQIC_ Reg94801 ( 1♂, QM);  Brisbane, - 27.526975 153.040322,  25.ix.1925, L. Pottenger, UQIC_ Reg94700; ANIC29034800( 2♂, QM; ANIC);  Eungella   45 milesWest of Mackay, -21.128750 148.488333,  426 to 731m,  13-25.ix.1923, Goldtiner, Collectorname is unclear, ANIC29034799( 1♂, ANIC);  LamingtonNP, IBISCA, -28.638000 153.121000,  23.i-3.ii.2009, G. Monte- ith & F. turco, Malaise trap, QM_REG._NO._T222147-222148 ( 2♀♀, QM);   6-22.i.2009, G. Monteith, Malaise trap, QM_REG._NO._T222146 ( 1♀, QM); One Tree Hill,  1 km East, -25.283333 151.916667,  180m,  26.ix.1999, S.G. Evans, QM_REG._NO._T223228 ( 1♀, QM);  Stockyard Creek, SE of Capalaba, -27.550000 153.166667,  24.ix.1985, G. and A. Daniels, GDCBReg_19563 ( 1♂, GDCB);  Yarraman, 2.9kmSSE, -26.865000 151.995000,  12-28.iii.2010, G. Monteith, MalaisetrapQM_REG._NO._T222149 ( 1♀, QM); “ Chilla”,  13.iv.1929, Aust. Nat. Ins. Coll., ANIC29034798( 1♂, ANIC).   Discussion:Nothing is known about the biology of this species. 2565887984 1997-10-19 1997-11-03 1997-10-19 QM J. Skevington & S. Winterton & Reg Australia -31.27969 Warrumbungle National Park 1 149.0468 37 38 1 1 New South Wales holotype 2565883890 1981-09-25 1981-09-27 1981-09-25 AM N. W. Rodd Australia -28.331308 10 km West of Murwillumbah 1 153.28128 37 38 1 1 New South Wales paratype 2565888019 1976-12-06 GDCB Daniels Australia -32.368507 3 km SW of Sandy Hollow 1 150.5669 37 38 1 1 New South Wales paratype 2565883892 1935-09 AM G. H. Hardy Australia -28.53915 Goondiwindi 1 150.2981 37 38 1 1 New South Wales paratype 2565887967 1973-10-14 AM P. Colman Australia -33.67596 Mona Vale 1 151.30653 37 38 2 2 New South Wales paratype 2565888028 1950-09-12 USNM, ANIC E. F. Riek Australia -20.578363 30 mi. W Collinsville 1 147.37495 37 38 ENT249845 1 1 Queensland paratype 2565887933 1997-08-10 QM Hilltopping & J. & A. Skevington & S. Winterton & Reg Australia 170 -27.483334 Mt. Coot-tha 1237 152.95 Brisbane 37 38 1 1 Queensland paratype 2565887952 1925-09-25 QM, ANIC L. Pottenger & Reg Australia -27.526976 Brisbane 1 153.04033 37 38 ANIC29034800 2 2 Queensland paratype 2565888026 [1337,1437,569,595] Australia Eungella 37 38 1 Queensland paratype 2565887926 1923-09-13 1923-09-25 1923-09-13 ANIC Goldtiner & Collector Australia 579 -21.12875 45 miles West of Mackay 1 148.48833 37 38 ANIC29034799 1 1 Queensland paratype 2565887901 2009-01-23 2009-02-03 2009-01-23 QM Australia -28.638 Lamington 1 153.121 37 38 2 2 Queensland paratype 2565888022 2009-01-06 2009-01-22 2009-01-06 QM Monteith Australia 37 38 1 1 Queensland paratype 2565883880 1999-09-26 QM S. G. Evans Australia 180 -25.283333 East 1 151.91667 37 38 1 1 Queensland paratype 2565888018 [745,940,742,768] Australia Stockyard Creek 37 38 1 Queensland paratype 2565887985 1985-09-24 GDCB G. and A. Daniels Australia -27.55 Capalaba 1 153.16667 37 38 1 1 Queensland paratype 2565888047 2010-03-12 2010-03-28 2010-03-12 QM G. Monteith & Malaise Australia -26.865 Yarraman 1 151.995 37 38 1 1 Queensland paratype 2565888015 1929-04-13 ANIC Aust. Nat. Ins. Coll. Australia Chilla 37 38 ANIC29034798 1 1 Queensland paratype