Psilota spinifemur Young

Young, Andrew D., Skevington, Jeffrey H. & Steenis, Wouter Van, 2020, Revision of the Psilota Meigen, 1822 flower flies (Diptera: Syrphidae) of Australia, Zootaxa 4737 (1), pp. 1-127: 77

publication ID

https://doi.org/10.11646/zootaxa.4737.1.1

publication LSID

lsid:zoobank.org:pub:C38FB007-98AE-4E4C-8A18-B1C75588815E

DOI

http://doi.org/10.5281/zenodo.3671041

persistent identifier

http://treatment.plazi.org/id/B33CB310-FFD6-3E0F-FF51-FD78FC5B62CB

treatment provided by

Plazi

scientific name

Psilota spinifemur Young
status

sp. nov.

Psilota spinifemur Young   sp. nov.

(Species plate: Fig. 34 View FIGURE 34 ; Genitalia: Fig. 46 View FIGURE 46 C–D; Map: Fig. 64A View FIGURE 64 )

Diagnosis: Face black, densely white pollinose, with white pile. Frons white pilose, vertex black pilose. Thorax black. Hind femur with a distinct rounded apicoventral setulose carina, with medial side of carina entirely setulose. Hind tibia with basoventral spur. Calypter pale, with only pile at corner of upper and lower calpyter dark. Halter pale. Abdomen black, with metallic green sheen. Tergites 2, 3 and 4 entirely pale pilose. Body length: 10.3–10.8 mm.

Description: MALE: Head: Head black, face white pollinose. Face pale pilose. Scape and pedicel orange, postpedicel orange with anterior edge brown. Postpedicel oval, approximately 1.5 times as long as widest point. Eye densely brown pilose. Thorax: Thorax black. Femora mostly brown, with only apex orange. Tarsi progressively darkened, with tarsomere 1 orange and tarsomere 5 dark brown. Legs otherwise orange. Hind femur with a distinct rounded apicoventral setulose carina, posterior side of carina entirely setulose. Hind tibia with a basoventral spur Pleuron densely grey pollinose. Pleural pile entirely white. Pile on scutum and mixed black and whitish-yellow. Pile on scutellum entirely black. Wing colourless. Wing bare on anterior three-quarters of cell bm and one-quarter of cell cua, cell c bare on basal third, cells m 4, dm, and r 4+5 with small bare areas near base. Alula completely microtrichose. Halter pale. Calypter pale, with pile at corner of upper and lower calypter dark brown. Abdomen: Abdomen black, with metallic green sheen. Tergites 2 to 4 entirely white pilose. Sternites black, with white pilosity. Genitalia: Epandrium compact, about as long as tall. Cercus approximately triangular. Outer lobe of surstylus inserted just above mid-height of inner lobe, curved downwards on apical two-thirds, with apex of lobe thickened and curved backwards towards base of surstylus. Inner lobe of surstylus broadening greatly over entire length, with a ventral excavation on basal 1/3 rd, rounded at apex. Phallapodeme smooth. Gonostylus slightly darkened.

FEMALE: Identical except for normal sexual dimorphism.

Etymology: The specific epithet ‘ spinifemur   ’ consists of spini-, derived from the Latin “spinus”, meaning “spine, thorn, or prickle”. This is in reference to the setulose carina on the hind femur of Psilota spinifemur   sp. nov.

Specimens examined: HOLOTYPE: AUSTRALIA: New South Wales: South of Milton ; -35.319178 150.439158; S.J. Paramonov; ANIC29034986 View Materials ; (1♂ ANIC) GoogleMaps   . PARATYPES: Australian Capital Territory: Cotter River , -35.531650 148.875125, 29.xi.1962, Z. Liepa, ANIC29034826 View Materials ; ANIC29034980 View Materials ; CNC GoogleMaps   _ Diptera   253689; USNM_ ENT_00249844 (1♂, 3♀, ANIC; USNM)   ; New South Wales: Nelligen , -35.645158 150.092364, 16.i.1970, J.C. Cardale, ANIC29034925 View Materials (1♀, ANIC) GoogleMaps   ; Queensland: 3 mi. W. Cunningham Gap , -28.050245 152.388598, on flowers of Bursaria spinosa   , 25.ii.1959, C.D. Michener, CNC GoogleMaps   _ Diptera   254014 (1♂, ANIC)   ; Other material:

Queensland: Dayboro , 0.5 km South, -27.200000 152.816667, 18–19.ix.1999, S.G. Evans, QM GoogleMaps   Samp. #50152, QM   _ REG._NO._T223223 (1♀, QM); Dayboro , 0.5 km South, -27.200000 152.816667, 18–19.ix.1999, S.G. Evans, QM GoogleMaps   Samp. #50152, QM   _ REG._NO._T223233 (1♀, QM)   .

Discussion: Nothing is known about the biology of this species.

ANIC

Australian National Insect Collection

CNC

Canadian National Collection of Insects, Arachnids, and Nematodes

USNM

Smithsonian Institution, National Museum of Natural History

QM

Queensland Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Syrphidae

Genus

Psilota