Peradon aurigaster (Hull) Figs 2, 11, 78, 79, 143, 144, 161, 164, 283

Microdon aurigaster Hull, 1941: 160. Holotype ♂: Bolivia (MCZ) [examined]; Thompson et al. 1976: 63.

Peradon aurigaster (Hull): Reemer and Ståhls (2013a: 160).

Studied type specimens.

Bolivia • 1 ♂, holotype of Microdon aurigaster Hull; Prov. Sara, Steinbach; MCZ.

Label 1: "Bolivia / Prov. Sara / Steinbach"; label 2: "M.C.Z. / Type / 23795"; label 3: "Microdon/ aurigaster / Hull n. sp."; label 4: "Jan. -July 2003 / MCZ Image / database"; label 5: " MCZ-ENT / 00023795". Coll. MCZ.

Additional specimens.

Bolivia • 1 ♂; Mapiri; RMNH.

Brazil • 1 ♀; Pará, Belem; 20 Apr. 1967; Y. Sedman leg.; CNC • 1 ♂; Rondônia, Vilhena; 12°65'55"S, 60°22'18"W; 25 Apr. 2006; J.A. Rafael & F.F. Xavier leg.; INPA • 1 ♂; Dist. Fed. Planaltina, cerrado; 1000 m a.s.l.; 24 Sep.-6 Oct. 1985; Scott E. Miller leg.; USNM (USNMENT01371107) • 1 ♀; Dist. Fed. Planaltina, cerrado; 1000 m a.s.l.; 6-25 Oct. 1985; Scott E. Miller leg.; USNM (USNMENT01371106) • 1 ♀; Mato Grosso; 12°50'S, 51°47'W; 26 Feb. 1968; O.W. Richards leg., R.S. & R.G.S. Exped. B.M. 1968-260; NHMUK • 1 ♀; West border Mato Grosso; May 1931; R.C. Shannon leg.; USNM (red label “Paratype”, see Notes).

Peru • 1 ♀; Tingo Maria, Rio Huallaga; 700 m a.s.l.; Nov. 1947; Weyrauch leg.; CNC • 1 ♀; San Martin, around San Ruque de Cumbaza; 6°23'4.96"S, 76°25'53.47"W; 15-31 Jan. 2015; T. Faasen leg.; RMNH.

Diagnosis.

Body length: male 7.5-9.5 mm, female 9.5-10 mm. The conspicuous golden pile on tergite 4 places this species in the flavofascium species group. Within this group, this species is distinguished by the combination of the following characters: basoflagellomere longer than scape, postpronotum bare, wing cell c bare on posterobasal 1/4 or less, alula largely bare, wing cell r4+5 partly yellow. Male genitalia as in Fig. 283.

Notes.

A Brazilian female specimen from the USNM collection carries a red label stating “Paratype” (see Additional specimens). As Hull (1941) based his description on a single specimen and does not mention additional material, this specimen cannot be considered a paratype. Variation in colouration in this species is considerable. Based on the present material, it is not possible to assess the taxonomic relevance of this variability, but it seems possible that P. aurigaster as defined here represents a species complex.

Distribution.

Known from Bolivia, Brazil ( Pará, Mato Grosso, Rondônia), and Peru.