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