Chromocheilosia bicolor ( Shannon & Aubertin, 1933 )

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 : 14-15

Chromocheilosia bicolor ( Shannon & Aubertin, 1933)

Fig. 1

Chilosia bicolor Shannon & Aubertin, 1933: 141

Cheilosia bicolor Stuardo, 1946: 125 *

Cheilosia (Chromocheilosia) bicolor Hull & Fluke, 1950: 306 *

Type locality and data. “ Casa Pangue , Chile ” (T, ♂, BMNH) .

Literature distribution. Los Lagos: 1♀, Casa Pangue, Llanquihue , -41.0668, -71.8885, XII.1926, Leg. R. & E. Shannon ( USNM) .

References. Shannon & Aubertin, 1933: 141, fig. 27a (male, face, lateral), b (female, face, lateral) (desc. & key); Stuardo, 1946: 125 (cat); Hull & Fluke, 1950: 306 (rev.); Fluke, 1957: 44 (cat.); Thompson, 1972b: 121, fig. 10 (male), 11 (female) ( Milesiinae rev., desc.); Thompson et al., 1976: 46.90 (cat.); Thompson, 1999a: 333 (key).

World distribution. Chile.

Chilean distribution. Only known from Los Lagos region ( Fig. 10 ).

Altitudinal range. This species inhabits precordillera ecosystems between 1000 and 1500 m.a.s.l.

Biology and notes. All aspects of its biology and ecology remain unknown.

Conservation status. DD; AOO = 2 km 2 and one locality (or subpopulation).

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 1–3. Chromocheilosia bicolor (Shannon &Aubertin, 1933): (1) female, scale bar not available (photo by Ximo Mengual, licence CC: BY-NC-SA). Chromocheilosia incerta (Shannon & Aubertin, 1933): (2) male, lateral view (photo by Patricia Henríquez). Scale bar = 1 mm. Chromocheilosia pubescens (Shannon & Aubertin, 1933); (3) female, lateral view (photo by Patricia Henríquez). Scale bar = 1 mm.