Psilota brunnipennis Young, 2020

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 : 38

Psilota brunnipennis Young sp. nov.

(Species plate: Fig. 14 ; Genitalia: Fig. 41 G–H; Map: Fig. 54A )

Diagnosis: Large, black species with apex of wing darkened. Hind femur with a low apicoventral setulose carina. Hind tibia simple. Male genitalia slightly asymmetrical, with a small downwards facing hook on the left outer surstylar lobe. Body length: 16.0– 16.5 mm.

Description: MALE: Head: Head black, face densely pale pollinose. Face pale yellow pilose, frons mostly black pilose with a few pale pile, vertex black pilose. Antenna entirely black, postpedicel somewhat elongate, approximately 2.5 times as long as wide. Eye densely brown pilose. Thorax: Thorax black. Legs mostly black, with apices of femora and fore- and mid tibiae brown. Hind femur with a low apicoventral setulose carina. Hind tibia simple, with no basoventral spur. Pleuron pale yellow pollinose. Pile on pleuron and scutellum entirely pale, pile on scutum mixed black and pale yellow. Wing with apical tip dark brown, with apical three-quarters of cell bm, apical one-quarter of cell cua, and a thin apical strip of anal lobe bare. Alula mostly bare, with some scattered microtrichia near base and apical edge. Halter orange. Calypter pale with a dark brown border. Abdomen: Abdomen black. Tergite 1 pale pilose. Tergite 2 mostly pale yellow pilose with some black pile on posterior half. Tergite 3 mostly black pilose with pale yellow pile only on lateral edges. Tergite 4 entirely black pilose. Sternites shining, mixed black and pale yellow pilose. Genitalia: Epandrium compact, about as long as tall. Cercus oval, somewhat elongate. Outer lobe of surstylus inserted at top of inner lobe, curved smoothly downwards on apical half, with a small tooth on the ventral surface of the left surstylus only. Inner lobe of surstylus long and straight, approximately 5 times as long as wide (at base), slightly narrowed at midlength, and smoothly rounded at apex. Phallapodeme with a small, forward facing spur on ventral side. Gonostylus darkened.

FEMALE: Identical except for normal sexual dimorphism.

Etymology: The specific epithet ‘ brunipennis ’consists of bruni -, derived from the Latin for “brown” (‘brunius’), and -pennis, derived from the Latin for wing (‘penna, -ae’). This is in reference to the brown wingtips of Psilota brunnipennis sp. nov., which easily distinguish it from all other species.

Specimens examined: HOLOTYPE: AUSTRALIA: New South Wales: South Black Range, east of Hoskinstown , 35.411111 149.534444, 1130mm, ANIC29035775 , 11.IX.2003, D.J. Ferguson, (1♂, ANIC) . PARATYPE: New South Wales: Bilpin, Blue Mountains ; -33.500261 150.532989; - 26.IX.1978; coll. N.W. Rodd; AustralianMuseumK411054; (1♀, AM) .

Discussion: Nothing is known about the biology of Psilota brunnipennis sp. nov.

Figures

FIGURE 14. P. brunnipennis sp. nov., A) male dorsal habitus, B) male anterolateral face, C) male lateral habitus. Scale bar =1 mm.

FIGURE 41. Lateral and dorsal male genitalia of A, B) P. azurea sp. nov.; C, D) P. basalis Walker; E, F) P. bicolor sp. nov., and G, H) P. brunnipennis sp. nov.. Scale bar =1 mm.

FIGURE 54. Known range of A) P. brunnipennis sp. nov.; B) P. calva sp. nov.