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 argentifascies Shannon & Aubertin, 1933 Figs 20–21 Chamaesphegina argentifascies Shannon & Aubertin, 1933: 145 Type locality and data. “ Ensenada , Argentina ” (T, ♀ , BMNH ) . Material examined. Maule : 2♂ , Reserva Nacional Los Queules , 27.XI.2017 , Leg. R. Barahona-Segovia ( PCRBS ) ; Biobío : 1♀ , Caramavida , 1. I.1954 , Leg. L. Peña ( CNC ) ; La Araucanía : 1♂ , Río Blanco , Malleco , II.1964 , Leg. L. Peña ( CNC ) ; 1♂ , Termas de Palguín , no data, Leg. Etcheverry ( MNHNCL ) ; Los Ríos : 1♀ , Valdivia , 16.XII.1980 , Leg. E. Krahmer ( UACH ) ; Los Lagos : 2♂ , 2♀ , Pucatrihue , 4–21.II.1967 , Leg. L.E. Peña ( MEUC ) ; Lago Chapo , 28.II.1983 , Leg.Arriagada ( MNHNCL ) ; 1♂ , Parque Nacional Puyehue , 7.XI.1968 , Leg. ( MNHNCL ) ; 2♀ , El Chinque , North Correntoso , 1.I.1990 , Leg. J. R. Vockeroth ( CNC ) ; 2♀ , Senda Darwin Biological Station , 13–16.II.2016 , Leg. Cecilia Smith-Ramírez ( CSD ) ; Aysén : 1♀ , Puerto Cisnes , 16.II.1961 , Leg. L. Peña ( CNC ) . References. Shannon & Aubertin, 1933: 145 (desc.), fig. 28 (head, frontal), fig. 29 (wing); Stuardo, 1946: 125 (cat.); Hull, 1949b: 339 (key, rev. & evolution); Fluke, 1957: 56 (rev.); Thompson, 1972b: 123 , fig. 23 (wing) ( Milesiinae rev.); Thompson et al. , 1976: 46 .91 (cat.); Thompson, 1999a: 333 (key); González & Coscarón, 2005: 347 (distr.). World distribution. Argentina and Chile . Chilean distribution. From Maule to Aysén region ( Fig. 28 ). Altitudinal range. From coastal to highland ecosystems (5– 2,240 m .a.s.l.). Biology and notes. Chamaesphegina argentifascies is associated with Laurelia sempervirens (Ruiz & Pav.) Tul in the Reserva Nacional Los Queules (Rodrigo Barahona-Segovia pers. obs.) and E. cordifolia trees in Chiloé Island (Rodrigo Barahona-Segovia and C. Smith-Ramírez, pers. obs.). The locality Ensenada in the type locality, belongs to the Puerto Varas municipality in Chilean territory and therefore, we considered this as an error in the geographic assignation of the type locality. This species, especially in central Chile and Valdivian forest has lost the larger extensions of native habitat by human being activities ( Miranda et al. , 2017 ). Conservation status. VU under B2ab (iii) using AOO = 40 km 2 and ten localities (or subpopulations); EOO = 99,655 km 2 .