Copestylum (Phalacromya) bulbosum ( Fluke, 1951b )

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 : 85

Copestylum (Phalacromya) bulbosum ( Fluke, 1951b)

Fig. 123

Volucella bulbosa Fluke, 1951b: 24

Type locality and data. “ Tungurahua: Volcano , Ecuador ” (T, ♂, AMNH) .

Material examined. Arica y Parinacota: 1♂, 2♀, Putre , 28.IV.2018, Leg. Rodrigo Barahona-Segovia ( PCRBS) ; 1♀, Belén, 26.IV.2018, Leg. Rodrigo Barahona-Segovia ( PCRBS) ; 2♂, 2♀, Codpa , 25.I.1967, Leg. R.H. González ( MEUC) ; Tarapacá: 1♀, Chiza, Iquique , 16.V.1986; Leg. S. Cerda ( MNHNCL) ; 1♂, 3♀, Chapiquiña , 3.V.1969, L.E. Peña ( MEUC) ; 1♂, Camiña , 09.IX.1983, Leg. S. Cerda ( MNHNCL) ; 3♀, Quebrada Camiña , 6.VI.1968, Leg. L.E. Peña ( MEUC) ; 2♂, Quisama , 5.VI.1968, Leg. L.E. Peña ( MEUC) .

References. Fluke, 1951b: 24, figs 13, 35, 45 & 63 (key); Etcheverry, 1952: 310 (cat.); Fluke, 1957: 62 (cat.); Etcheverry, 1963: 98 (cat.); Etcheverry, 1970: 96 (cat.); Marín-Armijos et al., 2017: 169 (cat.).

World distribution. Argentina, Ecuador and Chile.

Chilean distribution. From Arica y Parinacota to Tarapacá region ( Fig. 146 ).

Altitudinal range. From precordillera to highland ecosystems (1,660 –3,800 m.a.s.l.).

Biology and notes. Copestylum bulbosum is associated with native flora in highlands of the Andes. Specimens have been collected visiting flowers of Aldama helianthoides (Rich.) E.E. Schill. & Panero (R. Barahona-Segovia, pers. obs.). In Chile its habitat has been negatively affected by mining and water exploitation, reducing feeding resources for adults and habitat for its offspring. There is no knowledge of this species biology.

Conservation status. VU under B1ab (iii) + 2ab (iii) using EOO = 11,115 km 2;AOO = 36 km 2, 7 subpopulations and eight localities.

Figures

FIGURE 146. Distribution map of Copestylum bulbosum (Fluke, 1951) (red circles); Copestylum bolivianum (Hine, 1914) (yellow circles); Copestylum bradleyi (Curran, 1925) (blue circles); Copestylum cockerelli (Curran, 1927) (black circles); Copestylum peruvianum (Vimmer & Soukup, 1839) (green circles); Copestylum parina (Fluke, 1951) (pink circles); Copestylum smithae (Thompson, 1965) (black triangles) in Chile.

FIGURES 122–127. (122) Copestylum bradleyi (Curran, 1925) (photo by Matías Barceló), scale bar = 2 mm. (123) Copestylum bulbosum (Fluke, 1951) (photo by Matías Barceló), scale bar = 3 mm. (124) Copestylum cockerelli (Curran, 1927) (photo by Vicente Valdés), scale bar = 3 mm. (125) Copestylum longirostre (Macquart, 1846), lateral view. Scale bar = 2.5 mm (Photo by Vicente Valdés). Copestylum escomeli (Curran, 1929): (126) female and (127) male, feeding on Oxalis sp. (photos by Pedro Vargas).