Revision of the Neotropical hoverfly genus Peradon Reemer (Diptera, Syrphidae, Microdontinae) Author Reemer, Menno Author Skevington, Jeffrey H. Author Kelso, Scott text ZooKeys 2019 896 1 93 http://dx.doi.org/10.3897/zookeys.896.36493 journal article http://dx.doi.org/10.3897/zookeys.896.36493 1313-2970-896-1 3E0BC795B569442AAE6FDFD4A9FB9534 45D554E9BC5451AA8EFF6B8A14862ADC Peradon aureoscutus (Hull) Figs 13 , 19 , 21 , 104 , 151 , 152 , 257 Microdon aureoscutus Hull, 1943: 709. Holotype ♂: Amazon (NHMUK) [examined]; Thompson et al. 1976 : 63. Peradon aureoscutus (Hull): Reemer and Stahls 2013a : 146. Studied type specimens. Amazon Region • 1 ♂, holotype of Microdon aureoscutus Hull; Amazon; NHMUK. Label 1 (small, round, red-bordered): "Holo- / type"; label 2: "Amazon / 6653"; label 3 (red): "Holotype / Microdon / aureoscutum / Hull". According to Hull (1943) this specimen was collected by H.W. Bates. Diagnosis. Body length: male 11 mm. The triangle of golden pile on the mesoscutum places this species in a group together with P. aureus , P. trilinea and P. trivittatus . From the latter two species, P. aureoscutus differs by the absence of golden pile along the anterior and lateral margins of the mesoscutum. The species differs from P. aureus by the triangle of golden pile on the mesoscutum being wider than long and restricted to the posterior half of the mesoscutum. In the male, the ratio vertex width:head width is approximately 1:4.3 ( Fig. 19 ), and the lateral margins of tergite 2 are rather evenly diverging posteriad. Male genitalia as in Fig. 257 . The female is unknown. Notes. See P. aureus . Distribution. Known from the Brazilian Amazon region.