Toxomerus politus (Say, 1823)

Fig. 214

Scaeva polita Say, 1823: 88

Syrphus politus Say, 1823: 88 *

Syrphus achoratus Macquart, 1842: 97 *

Syrphus cingulatulus Macquart, 1850: 459

Mesogramma politus Loew, 1866: 157 *

Syrphus hecticus Jaennicke, 1867: 398

Mesogramma anchorata Schiner, 1868: 348 *

Mesograpta anchorata Osten Sacken, 1875: 48 *

Mesograpta polita Osten Sacken, 1875: 48 *

Mesograpta politum Fluke, 1956: 228 *

Type locality and data. “ USA. Virginia: Fairfax Co., near Annandale ” (fixed by NT designation) (NT, ♂, USNM) .

Material examined. Arica y Parinacota: 1♀, Lluta Valley, km 41, 21.4.196 8, Leg. J. Acuña (UTA).

References. Say, 1823: 88 (desc.); Sack, 1941: 100 (cat.); Boyes et al., 1973: 395 (karyotypes); Thompson et al., 1976: 53 (cat.); Metz & Thompson, 2001: 240 (desc.); Marinoni et al., 2004: 556 (ecological study); Marinoni et al., 2007: 149 (desc. & dist.); Mengual et al., 2008: 719 (phylogeny); Borges & Couri, 2009: 47 (desc.); Morales & Köhler, 2008: 44 (ecological study); Reemer & Rotheray, 2009: 1 (biological study); Nunes-Silva et al., 2010: 178 (ecological study); Reemer, 2010: 193 (notes & dist.); Mengual et al., 2012: 195 (phylogeny); Souza et al., 2014: 6 (ecological study); Arcaya et al., 2013: 146 (dist.); Bortolotto et al., 2016: 159 (ecological study); Miranda & Moran, 2016: 8, figs 64, 65, 79 & 92 (female terminalia); Montoya, 2016: 484 (cat.); Marín-Armijos et al., 2017 (cat.).

World distribution. Southern Canada to Argentina, including West Indies and Chile.

Chilean distribution. Only recorded to Arica y Parinacota region (Fig. 220).

Altitudinal range. This species could inhabit transverse valleys between 5 and 500 m. a.s.l.

Biology and notes. Toxomerus politus is here reported from Chile for the first time and is a flower fly species widely distributed in South America. Larvae have been described as polinivorous (Reemer & Rotheray 2009; Nunes- Silva et al., 2010) All basic aspects of its biology and ecology remain unknown.

Conservation status. LC; AOO = 2 km 2 and one locality (or subpopulation). This species is widely distributed in all Neotropical region.