Tropidia (Tropidia) nigricornis Philippi, 1865

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 : 73-76

Tropidia (Tropidia) nigricornis Philippi, 1865

Figs 108–109

Tropidia nigricornis Philippi, 1865: 745

Xylota bivittata Bigot, 1884: 547

Zelima bivittata Kertész, 1910: 282 *

Tropidia bivittata Shannon, 1926: 43 *

Type locality and data. “ Illapel , Chile ” (T, ♂, MNHNCL) .

Material examined. Coquimbo: 1♀, Tranque Recoleta , 28.X.1975, Leg. O . León ( MNHNCL) ; 1♂, Hacienda Illapel , 21–24.XI.1959, Leg. L. Peña ( CNC) ; 1♂, El Pangue, 3.XI.1961, Leg. L. Peña ( CNC) ; 1♀, El Naranjo, Tilama , XII.1968, Leg. J. Molina ( MEUC) ; Valparaíso: 1♂, Fundo Mirador, Quillota , 29.VIII.1965, Leg. Cerda ( MNHNCL) ; 1♀, Villa Alemana , 25.XI.1965, J. Solervicens ( MNHNCL) ; 1♀, Guardia Vieja , XI.1953, Leg. Ramírez ( CNC) ; Metropolitana : 1♀, Caleu, Lo Marín , 03.XI.1989, Leg. M. Cerda ( MNHNCL) ; 1♂, Las Condes , 17.I.1966, Leg. J . Herrera ( IEUMCE) ; 1♀, La Obra, 18.X.1987, Leg. S. Roitman ( MNHNCL) ; 1♀, Las Melosas , 31.I.1967, Leg. J. Moroni ( MNHNCL) ; 1♂, San Alfonso , 23.IV.1960, Leg. J. Moroni ( IEUMCE) ; O’Higgins: 1♂, Colchagua , no date, Leg. NN ( MNHNCL) ; Ñuble : 1♀, Cobquecura , I.1966, Leg. P. Ramirez F. ( IEUMCE) ; 1♂, Ranguelmo , 11.II.1959, Leg. L. Peña ( CNC) ; 1♂, Las Trancas , 1400 m, 03.I.1994, Leg. L. Peña & A. Ugarte ( MEUC) ; 1♀, Re- cinto, 23.II.1969, L. Alfaro ( MEUC) .

References. Philippi, 1965: 745 (desc.); Bigot, 1884: 547 (desc.); Williston, 1886: 321 (cat.); Reed, 1888:

298 (cat.); Kertész, 1910: 282 (cat.); Shannon, 1926: 43 (desc.); Shannon & Aubertin, 1933: 153 (desc. & key); Stuardo, 1946: 127 (cat.); Fluke, 1957: 103 (cat.); Etcheverry, 1963: 88 (cat.); Thompson et al., 1976: 120 (cat.); Camousseight, 2005: 93 (cat.).

World distribution. Chile.

Chileand distribution. From Coquimbo to Ñuble region ( Fig. 110 ).

Altitudinal range. From inland valleys to precordillera ecosystems (350– 1,400 m.a.s.l.).

Biology and notes. Tropidia nigricornis is associated with Mediterranean forests. It has been observed visiting E. paniculatum (R. Barahona-Segovia, pers. obs.). Other data about the biology or ecology of this species are unknown.

Conservation status. LC; EOO = 88,116 km 2; AOO = 64 km 2 and 16 localities (or subpopulations).

Figures

FIGURE 110. Distribution map of Tropidia flavimana (Philippi, 1865) (black circles); Tropidia rubricornis Philippi, 1865 (violet circles); Tropidia notata (Bigot, 1882) (red circles); Tropidia nigricornis Philippi, 1865 (green circles) and Syritta flaviventris Mcquart, 1842 (blue circles) in Chile.

FIGURES 104–109. Syritta flaviventris Mcquart, 1842: (104) visiting a ‘margarita’, Maipú (photo by Pablo Moreno). Tropidia notata (Bigot, 1882): (105) dorsal view (photo by Vicente Valdés). Tropidia nigricornis Philippi, 1865: (106) in situ lateral view and (107) dorsal view (Photos by Vicente Valdés). Tropidia flavimana (Philippi, 1865): (108) lateral and (109) dorsal view (photos by Vicente Valdés). Scale bars = 0.2 mm.