Toxomerus floralis ( Fabricius, 1798 )

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 : 153

Toxomerus floralis ( Fabricius, 1798)

Syrphus floralis Fabricius, 1798: 563

Scaeva floralis Fabricius, 1805: 253 *

Syrphus quadrifasciatus Bigot, 1857: 337

Mesogramma subannulata Loew, 1866: 157

Mesogramma floralis Schiner, 1868: 347 *

Toxomerus subannulatus Kertész, 1910: 150 *

Mesogramma flamminea Hull, 1941a: 312

Mesograpta floralis Fluke, 1956: 223 *

Type locality and data. “Cajenne” (HT, ♂, ♀, UZMC) .

Material examined. Arica y Parinacota: 1♂, 1♀, Cica, 12.VI.1968, Leg. N. Hichins (UTA); 1♀, Lluta CAMPEX, IX.1967, Leg. A. Aguilera (UTA); 1♀, Cuya, Camarones, 25.II.1976, Leg. N. Hichins (UTA); 2♂, Chica, Picha, Lluta, 12.XI.1969, Leg. N. Hichins (UTA) .

References. Fabricius, 1798: 563 (desc.); Williston, 1886: 312 (cat.); Hull, 1941d: 312 (desc.); Thompson et al., 1976: 50 (cat.); Thompson, 1981: 68, (desc.); Thompson & Thompson, 2006: 323 (desc.); Borges & Couri, 2009: 35 (desc.); Reemer, 2010: 191 (desc.); Arcaya et al., 2015: 146 (ecological study); Marín-Armijos et al., 2017: 180 (cat.).

World distribution. Bahamas, Brazil, Colombia, Costa Rica, Cuba, Ecuador; El Salvador, Guatemala, Hispaniola, Jamaica, Lesser Antilles, Mexico, Nicaragua, Puerto Rico, Venezuela and Chile.

Chilean distribution. Only recorded for Arica y Parinacota region ( Fig. 220 ).

Altitudinal range. From coastal to inland valley ecosystems (5– 500 m.a.s.l.).

Biology and notes. Toxomerus floralis is a flower fly species widely distributed in Neotropical areas and probably associated with crops in Azapa, Camarones and Lluta valley. Arcaya et al. (2013) recorded this species feeding on Aphidae and leafhopper insects. Biological aspects and potential prey in Chile are unknown.

Conservation status. LC; EOO = 608 km 2, AOO = 12 km 2 and three localities (or subpopulations). This species is widely distributed for all Neotropical region.

Figures

FIGURE 220. Distribution map of Toxomerus species in Chile: Toxomerus calceolatus (Macquart, 1842) (green circles); Toxomerus floralis (Fabricius, 1798) (light blue circles); Toxomerus politus (violet triangle); Toxomerus productus (Curran, 1930) (yellow circles); Toxomerus schlingeri Thompson & Thompson, 2006 (blue circles); Toxomerus vertebratus (Rondani, 1863) (red triangle).