Myolepta (Myolepta) haemorrhoidalis ( 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 : 16-17

Myolepta (Myolepta) haemorrhoidalis ( Philippi, 1865)

Figs 4–5

Priomerus haemorrhoidalis Philippi, 1865: 740 Type locality and data. “ Santiago, Chile ” (T, A, MNHNCL).

Material examined. Coquimbo: 1♂, Caren , 14.XI.1963, Leg. L. Peña ( CNC) ; 1♀, Hacienda Illapel , 24.X.1964, Leg. L. Peña ( CNC) ; 2♂, 1♀, El Naranjo, Tilama , IX.1963, Leg. J. Molina ( MEUC) ; Valparaíso: 1♂, Quillota , 21.X.1965; Leg. Cerda ( MNHNCL) ; 1♂, El Granizo, no date, Leg. Hichins ( MNHNCL) ; 1♂, Villa Alemana , no date, Leg. Cerda ( MNHNCL) ; Metropolitana : 1♂, El Paico, 18.XII.1967, Leg. L. Baudet ( MNHNCL) ; 1♂, Caleu, TilTil , 29.XII.1990, Leg. M. Cerda ( MNHNCL) ; 4♂, 4♀, Lampa , no date, Leg. M. Cerda ( MNHNCL) ; 1♀, La Pincoya , no date, Leg. NN ( MNHNCL) ; Cerro San Cristóbal ( Etcheverry 1963) ; 1♀, Ñuñoa , 24.IX.1989, Leg. M. Cerda ( MNHNCL) ; 8♂, 32♀, Macul, no date, Leg. NN ( MNHNCL) ; 1♂, Peñalolen , no date, Leg.NN ( MNHNCL) ; 1♂, Curacaví , 23.XI.1967, Leg. J. Barros ( MNHNCL) ; O’Higgins: 1♂, Chomedahue , Colchagua, no date, Leg. NN ( MNHNCL) ; Maule: 1♂, Cerro Carlos Condell, Leg. Joaquín Sepulveda ( PCCC) ; 2♀, Estero La Jaula , I.1964, Leg. L. Peña ( CNC) ; 1♂, 1♀, El Radal, 1600 m, 23.XI.1957, Leg. L. Peña ( CNC) La Araucanía: 1♀, Angol , 10.XI.1949, Leg. Frindt ( INIA) ; 1♂, Pemehue 19.I.1946, Leg. L.E. Peña ( INIA) .

References. Philippi, 1865: 740 (desc. & key); Williston, 1886: 315 (cat.); Reed, 1888: 299 (cat.); Kertész, 1910: 248 (cat.); Shannon, 1926: 70 (rev. & desc.); Shannon, 1927: 6 (key); Shannon & Aubertin, 1933: 151 (desc.); Fluke & Veems, 1956: 8 (desc.); Stuardo, 1946: 126 (cat.); Fluke, 1956: 8, fig. 9 (desc.); Fluke, 1957: 54 (cat.); Etcheverry, 1963: 63 (desc.); Thompson, 1972b: 118 ( Milesiinae rev.); Thompson et al., 1976: 90 (cat.); Reemer et al., 2004: 577 (rev. & checklist).

World distribution. Argentina and Chile.

Chilean distribution. From Coquimbo to La Araucanía region ( Fig. 10 ).

Altitudinal range. From coastal to precordillera ecosystems (50– 1,000 m.a.s.l.).

Biology and notes. Myolepta haemorrhoidalis is a species associated to exotic flora as Crataegus sp. (Joaquín Sepúlveda, CSP record; Fig. 4 ) and Prunus domestica L. (Orlando Montes, CSP record) and native tree Quillaja saponaria Molina (Victoria Kunst, CSP record).

Conservation status. LC; EOO = 25,360 km 2; AOO = 68 km 2; 15 localities and subpopulations.

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.