Peradon aurifascia (Hull)

Reemer, Menno, Skevington, Jeffrey H. & Kelso, Scott, 2019, Revision of the Neotropical hoverfly genus Peradon Reemer (Diptera, Syrphidae, Microdontinae), ZooKeys 896, pp. 1-93 : 1

Peradon aurifascia (Hull) Figs 38 , 70 , 71 , 134 , 135 , 157 , 160 , 273

Microdon aurifascia Hull, 1944c: 245. Holotype ♂: Brazil, São Paulo (NHMUK) [examined]; Thompson et al. 1976: 63.

Peradon aurifascia (Hull): Reemer and Ståhls 2013a: 145.

Studied type specimens.

Brazil • 1 ♂, holotype of Microdon aurifascia Hull; Sao Paulo, Alto da Serra; 12 Mar. 1912; G.E. Bryant leg.; NHMUK.

Label 1 (small, round, red-bordered): "Holo- / type"; label 2: "Alto da Serra, / Sao Paulo, / Brazil. / G.E. Bryant. / 12.III.1912."; label 3 (red): "Holotype / Microdon / aurifascia / Hull". Coll. NHMUK.

Additional specimens.

Argentina • 1 ♀; Misiones, Leandro N. Alem; 24 Feb. 1951; Duret leg.; MNHN.

Brazil • 1♀; Nova Teutonia; 14 Oct. 1940; F. Plaumann leg.; CNC • 1 ♂; São Paulo, M. das Cruses; Aug. 1939; M. Carrera leg.; CNC • 1 ♂; Est. Biol. Boracéia, Salesópolis, S.P.; 16 Sep. 1993; W. Wilms leg.; CSCA • 1 ♀; Est. Biol. Boracéia, Salesópolis, S.P.; 19 Sep. 1965; Rabello leg.; MZUSP • 1 ♀; Floresta da Tijuca; Mar. 1964; C.A.C. Seabra leg.; MZUSP.

Diagnosis.

Body length: male 12.5-13 mm, female 14-15 mm. A large species with elongate, unconstricted abdomen. Male with wing yellowish ( Fig. 38 , 134 ), female with wing yellow only anterobasally and with grey subapical cloud ( Fig. 135 ). The abdomen is dark brown, except for a pair of yellow maculae on tergite 2. The species resembles P. angustiventris and especially P. luridescens but differs from those by the absence of a fascia of golden pile along the mesonotal transverse suture. It also differs from most other Peradon species (except for some small species of the flavofascium group) in the smooth and shining bare median facial vitta ( Fig. 70 ). Male genitalia as in Fig. 273 .

Distribution.

Known from the Misiones province in northeastern Argentina and from the Santa Catarina and São Paulo states in southern Brazil.

Figures

Figures 36 - 47. 36 - 46 Wings of Peradon species of the bidens - group: 36 P. bidens ♂ Suriname RMNH 37 P. bispina ♂ holotype 38 P. aurifascia ♂ holotype 39 P. angustiventris ♂ Suriname RMNH 40 P. angustus ♀ neotype 41 P. flavipennis ♀ holotype 42 P. normalis var. SUR- 17 B ♀ Suriname RMNH 43 P. normalis typical var. ♀ Suriname RMNH 44 P. pompiloides ♂ holotype 45 P. pompiloides ♀ paratype 46 P. niger ♂ holotype 47 Wing of P. palpator ♂ holotype (flavofascium group)

Figures 67 - 73. 37 - 39 Abdomen in dorsal view 67 P. costaricensis male (holotype) 68 P. aurifascia male (Brazil CSCS) 69 P. luridescens male (Suriname RMNH) 70 Face of P. aurifascia male (holotype). Note smooth and bare median vitta 71 Tergite 4 of P. aurifascia in lateral view. Note reddish apical margin 72, 73 Scutellum: 72 P. angustiventris female (Brazil INPA) 73 P. angustus male (neotype).

Figures 129 - 135. Dorsal habitus of Peradon species (bidens group) 129 P. angustus ♀ neotype 130 P. angustiventris ♂ Suriname RMNH 131 P. angustiventris ♀ Brazil Manaus INPA 132 P. luridescens ♂ Suriname RMNH 133 P. luridescens ♀ Suriname RMNH 134 P. aurifascia ♂ Brazil CSCA 135 P. aurifascia ♀ Brazil MZUSP. Scale bar: 10 mm.

Figures 157 - 160. Peradon aurifascia male, holotype 157 habitus dorsal 158 habitus lateral 159 head frontal 160 head lateral.

Figures 268 - 273. Male genitalia of Peradon species 268 P. costaricensis paratype 269 P.? normalis Brazil Rondonia LACM 270 P. niger holotype 271 P. bispina holotype 272 P. pompiloides holotype 273 P. aurifascia Sao Paulo CNC.