Updating the knowledge of the flower flies (Diptera: Syrphidae) from Chile: Illustrated catalog, extinction risk and biological notes Author Barahona-Segovia, Rodrigo M. Author Riera, Pamela pamela.riera1@gmail.com Author Pañinao-Monsálvez, Laura laurapaninao@gmail.com Author Guzmán, Vicente Valdés vicente.mvg@gmail.com Author Henríquez-Piskulich, Patricia phenriquezpi@student.unimelb.edu.au text Zootaxa 2021 2021-04-15 4959 1 1 178 journal article 7241 10.11646/zootaxa.4959.1.1 e9fcfa2b-72cd-4826-a7e5-c33cd37bf00e 1175-5326 4693464 3BAB6920-30AC-410A-995B-BBDA9E2A105D 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.