Chamaesphegina macra ( Enderlein, 1938 )

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 : 24

Chamaesphegina macra ( Enderlein, 1938)

Figs 22–23

Desmetrum macrum Enderlein, 1938: 194

Type locality and data. “ Comudes , Chile ” (T, ♂, ZMHU)

References. Enderlein, 1938: 194 (desc.); Stuardo, 1946: 126 (cat.); Hull, 1949b: 339 (key, rev. & evolution); Fluke, 1957: 56 (rev.); Etcheverry, 1963: 23, 138 (cat. & desc.); Thompson, 1972b: 123 ( Milesiinae rev.); Thompson et al., 1976: 91 (cat.); Thompson, 1999a: 333 (key).

Material examined. No specimens were reviewed.

References. Enderlein, 1938: 194 (desc.); Stuardo, 1946: 126 (cat.); Hull, 1949b: 339 (key, rev. & evolution); Fluke, 1957: 56 (rev.); Etcheverry, 1963: 23, 138 (cat. & desc.); Thompson, 1972b: 123 ( Milesiinae rev.); Thompson et al., 1976: 91 (cat.); Thompson, 1999a: 333 (key).

World distribution. Chile.

Chilean distribution. Unknown.

Altitudinal range. Unknown.

Biology and notes. Thompson (1972b) comments that the genus Desmetrum has not been seen by him and appears to be a synonym of Chamaesphegina . Hull (1949b) and Fluke (1956) suggest the possibility that the species could be a synonym of Ch. argentifascies . Photos taken to the type specimen deposited in ZMHU suggest that this species resembles Ch. argentifascies (Eliana Buenaventura & Zöe Simons pers. comm.).

Conservation status. Not evaluated because absence of occurrences.

Figures

FIGURES 20–25. Chamaesphegina argentifascies Shannon & Aubertin, 1933: (20) male, dorsal view; (21) male, lateral view. Scale bars = 1.2 mm (photos by Vicente Valdés). Chamaesphegina macra: (22) male, dorsal view and (23) lateral, view (photo by Zöe Simmons; ZMHB). Scale bars = 1 mm. Notiocheilosia nitescens Shannon & Aubertin, 1933: (24) lateral view and (25) dorsal view. Scale bars = 1 mm (photos by Vicente Valdés).