Syrphus shorae Fluke, 1950

Barahona-Segovia, Rodrigo M., Riera, Pamela, Pañinao-Monsálvez, Laura, Guzmán, Vicente Valdés & Henríquez-Piskulich, Patricia, 2021, Updating the knowledge of the flower flies (Diptera: Syrphidae) from Chile: Illustrated catalog, extinction risk and biological notes, Zootaxa 4959 (1), pp. 1-178 : 146-149

Syrphus shorae Fluke, 1950

Fig. 204

Syrphus shorae Fluke, 1950b: 440

Syrphus bisinuatus Williston, 1891 –1892: 17

Syrphus willistoni Fluke, 1942: 3

Type locality and data. “ Mexico, Guerrero, Omiltemi, Costa Rica, Volcan de Irazu, Rio Sucio ” (HT, ♀, BMNH) .

Material examined. Valparaíso: 1♂ , Bosque Quintero , 31.X.1979, Leg. G. Cerda ( MNHNCL); Metropolitana: 1♀ , Lo Marín, Caleu , 11.XI.1984, Leg. M. Cerda ( MNHNCL); 1♂ , Santiago, 24.VIII.1990, Leg. R. Trincado ( INIA); 1♂ , Ñuñoa , 29.IX.1982, Leg. M. Cerda ( MNHNCL); 1♀ , La Platina , V.1961, Leg. NN ( INIA); 2♂, 1♀ ,

Quebrada de la Plata, 23.IV.1966, Leg. N. Hichins ( MEUC); O’Higgins: 1♂, Nancagua, 29.XII.81, Leg. I. Barros ( MNHNCL) .

References. Williston, 1891 –1892: 17 (desc.); Giglio Tos, 1892a: 28 (desc.); Aldrich, 1905: 365 (desc.); Hine, 1914: 337 (desc.); Fluke, 1942: 22, fig. 2 (abdomen); Fluke, 1950a: 117, fig. 14 (M genitalia); Fluke, 1950b: 440 (desc.); Fluke, 1956: 198 (cat.); Etcheverry, 1963: 86 (cat.); Thompson et al., 1976: 8 (cat.); Thompson et al., 2000: 40 (desc. & key); Cevallos, 1973: 27, figs 1–2 (adult), figs 1–5 (head, puparium and larvae) (desc.); Arcaya et al., 2013: 145 (larvae predatory); Montoya, 2016: 479 (cat.).

World distribution. Argentina, Colombia, Costa Rica, Ecuador, Guatemala, Panamá, Peru, Mexico, Venezuela and Chile.

Chilean distribution. From Valparaíso to O’Higgins region ( Fig. 205 ).

Altitudinal range. From coastal to precordillera ecosystems (5– 1,310 m.a.s.l.).

Biology and notes. Syrphus shorae is a species widely distributed in the Neotropical region ( Montoya 2016). In Chile, the distribution of this species might be underestimated as citizen science records have shown it has a wide distribution. Thus, it might not have conservation problems. This species has been observed visiting flowers of Plectranthus sp. (Victoria Kunst, CSP record); Plectranthus ciliatus E. Mey. ex Benth (César Martínez, CSP record) and L. maritima (Gabriela Germain, CSP record).

Conservation status. LC; AOO = 7,955 km 2 (potentially higher), EOO = 28 km 2, six localities (or subpopulations). This species is widely distributed in all Neotropical region.

Genus Victoriana Miranda, 2020 in Miranda et al., 2020

Type-species: Baccha melanorrhina Philippi, 1865 ; Baccha victoria species group, in part. Hull (1949c) Ocyptamus mentor species group. Mengual et al. (2012); Ocyptamus melanorrhinus species group. Miranda et al. (2016); Mengual et al. (2018b).

Figures

FIGURE 205. Distribution map of species of Chile: Syrphus octomaculatus Walker, 1836 (red circles); Syrphus reedi Shannon, 1927 (black circles), and Syrphus shorae Fluke, 1950 (green circles).

FIGURES 201–204. Syrphus octomaculatus Walker, 1836: (201) female in exotic plant, Providencia (Photo by Gabriela Germain) and (202) male visiting Loasa tricolor Ker. Gawl, La Ligua (Photo by César Martinez). Syrphus reedi Shannon, 1927: (203) female visiting Luma apiculata (DC) Burret (photo by Orlando Montes). Syrphus shorae Fluke, 1950: (204) visiting exotic plant, Providencia, Santiago (Photo by Gabriela Germain). Red arrows show the differences in the color of femora between S. reedi and S. shorae.