Orthonevra chilensis Thompson, 1999

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 : 20

Orthonevra chilensis Thompson, 1999

Figs 11–12

Orthonevra chilensis Thompson 1999a: 346

Type locality and data. “ Viña del Mar , Chile ” (HT, ♂, NMW) .

Material examined. Coquimbo: 4♂, 5♀, El Naranjo, Tilama, I.1969, Leg. J. Molina ( MEUC) ; Valparaíso: 1♂, Viña del Mar , 4.IV.1967, Leg. P. Herbst ( NMW) .

References. Thompson, 1999a: 346 (desc.).

World distribution. Chile.

Chilean distribution. From Coquimbo to Valparaíso region ( Fig. 28 ).

Altitudinal range. From coastal to inland valley ecosystems (50– 491 m.a.s.l.).

Biology and notes. The habitats of this species has been scenario of several socio-environmental conflicts and the native forest have been replaced and fragmented by avocado crops, urbanization and wildfires ( Carranza et al., 2020). All basic aspects of its biology and ecology remain unknown.

Conservation status. EN under B2ab (iii) using AOO = 8 km 2 and two localities and subpopulations.

Figures

FIGURE 28. Distribution map of Austroascia segersii Thompson & Marnef, 1977 (red circles); Chamaesphegina argentifascies Shannon & Aubertin, 1933 (blue circles); Notiocheilosia nitescens Shannon & Aubertin, 1933 (black circles); Orthonevra chilensis Thompson, 1999 (green circles) and Sphiximorpha barbiger (yellow circles) in Chile.

FIGURES 11–15. Orthonevra chilensis Thompson, 1999: (11) dorsal view and (12) lateral view. Scale bars = 0.6 mm. Pia cyanea Philippi, 1865: (13) lateral view (Photo by Vicente Valdés). Scale bar = 1 mm. (14) wing (photo: Vicente Valdés). Scale bar = 0.5 mm and (15) dorsal view (Photo by Patricia Henríquez). Scale bar = 1 mm.