Chromocheilosia pubescens ( 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 : 15-16

Chromocheilosia pubescens ( Shannon & Aubertin, 1933)

Fig. 3

Chilosia pubescens Shannon & Aubertin, 1933: 142

Cheilosia pubescens Stuardo, 1946: 125 *

Type locality and data. “ Casa Pangue , Chile ” (T, ♀, USNM) .

Literature distribution. Los Ríos: 1♀, Panguipulli, 28.X.1989, Leg. E.K.G. ( UACH) ; Los Lagos: Casa Pangue, Llanquihue , -41.0668, -71.8885 ( Shannon & Aubertin 1933) .

References. Shannon & Aubertin, 1933: 142 (desc. & key); Stuardo, 1946: 125 (cat); Fluke, 1957: 45 (cat.); Thompson, 1972b: 121 ( Milesiinae rev.); Thompson et al., 1976: 46.90 (cat.); Thompson, 1999a: 333 (key).

World distribution. Argentina and Chile.

Chilean distribution. From Los Ríos to Los Lagos region ( Fig. 10 ).

Altitudinal range. From inland valleys to the highland ecosystems (500– 2,500 m.a.s.l.).

Biology and notes. Chromocheilosia pubescens is associated with the Valdivian forest. Habitat loss generated by urbanization, forestry or croplands are the main thrair to this forest species ( Miranda et al., 2017). Other aspects about its biology and ecology remain unknown.

Conservation status. EN under B2ab (iii) using AOO = 8 km 2, two localities and two 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 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.