Myolepta (Myolepta) nausicaa ( Hull, 1937 )

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 : 19-20

Myolepta (Myolepta) nausicaa ( Hull, 1937)

Figs 8–9

Nausigaster nausicaa ( Hull, 1937: 172)

Type locality and data. “ Montevideo, Uruguay ” (T, ♀, USNM) .

Material examined. Metropolitana: 1♀, Quilicura, 30.XII.1954, Leg. L. Peña ( CNC); (sex undeterminated) Tobalaba, II.1955, Leg. L. Peña ( CNC).

References. Hull, 1937: 172 (desc.); Thompson 1974a: 328 ( Myolepta review); Thompson et al., 1976: 46 (cat.).

World distribution. Argentina, Uruguay and Chile.

Chilean distribution. Only recorded from Metropolitan region ( Fig. 10 ).

Altitudinal range. This species has mainly been recorded in Mediterranean valleys (485– 567 m.a.s.l.).

Biology and notes. All basic aspects of its biology and ecology remain unknown in Chile.

Conservation status. DD; AOO = 4 km 2 and two localities (or subpopulations).

Genus Orthonevra Macquart, 1829

Orthonevra Macquart, 1829: 188 (40). Type-species, Chrysogaster elegans Meigen (mon.). Refs. Sedman, 1964 (rev, Keys); Thompson, 1972b: 119–121 (description); Thompson et al., 1976: 90–91 (cat.); Thompson, 1981: 141 (taxonomic notes); Thompson, 1999a: 332. Orthoneura , emend.

Cryptineura Bigot, 1859: 308 . Type-species, C. hieroglyphca Bigot (mon.) = nitida Wiedemann. Chrysogaster authors (part).

Figures

FIGURES 10. Distribution map of Chromocheilosia and Myolepta species in Chile: C. bicolor (Shannon & Aubertin, 1933) (pink circles); Chromocheilosia incerta (Shannon & Aubertin, 1933) (red circles); C. pubescens (Shannon & Aubertin, 1933) (light blue circles); M. haemorrhoidalis (Philippi, 1865) (green circles); Myolepta luctuosa (Bigot, 1857) (yellow circles), and M. nausicaa (Hull, 1937) (Brown circles).

FIGURES 4–9. Myolepta haemorrhoidalis (Philippi, 1865): (4) female visiting flowers of Crataegus sp., Cerro Isla Carlos Condell, Curicó (photo by Joaquín Sepulveda) and (5) dorsal view (photo by Patricia Henríquez). Scale bar = 1 mm. Myolepta luctuosus (Bigot, 1857): (6) female visiting Trevoa quinquenervia, Gillies & Hook, Rio Clarillo National Park (photo by Daniel Llavaneras) and (7) dorsal view (photo by Patricia Henríquez). Scale bar = 1 mm. Myolepta nausicaa (Hull, 1937): (8) dorsal view (photo by Kevin Moran, CNC) and (9) lateral view (photo by Kevin Moran, CNC). Scale bars = 2 mm.