Pia cyanea Philippi, 1865

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 : 20-22

Pia cyanea Philippi, 1865

Figs 13–15

Pia cyanea Philippi, 1865: 742 Type locality and data. “ Illapel , Chile ” (T, ♂, MNHNCL) .

Material examined. Coquimbo : 1♀, El Naranjo, Tilama, XII.1968, Leg. J. Molina ( MEUC) ; Metropolitana : 1♂, 1♀, Quebrada de la Plata, Maipú, 510 m, 17.XI.1967, Leg. N. Hichins ( MEUC) ; O’Higgins : 1♀, Quebrada San Gerónimo, 07.XII.1965, Leg. J. Herrera ( IEUMCE) ; La Araucanía: 1♀, Termas de Palguin , 24.II.1966, Leg. J. Herrera ( IEUMCE) ; Los Ríos : Isla Mancera ( Porter 1927b) .

References. Philippi, 1865: 742 (desc.); Williston, 1886: 310 (cat.); Reed, 1888: 300 (cat.); Kertész, 1910: 68 (cat.); Porter, 1927b: 122 (cat.); Shannon, 1927: 6 (checklist); Shannon & Aubertin, 1933: 150 (desc.); Stuardo, 1946: 126 (cat.); Hull, 1949b: 329 (desc.); Fluke, 1957: 47 (cat.); Etcheverry, 1963: 67 (cat.); Thompson et al., 1976: 122 (cat.); Thompson, 1999: 337 (key & desc.).

World distribution. Chile.

Chilean distribution. From Coquimbo to Los Ríos region ( Fig. 78 ).

Altitudinal range. This species inhabits mainly inland valleys between 490 and 600 m. a.s.l.

Biology and notes. Pia cyanea is associated with native shrublands and forests. This habitat has been intensively replaced by different human being activities such as croplands, forestry or urbanization ( Alaniz et al., 2016; Miranda et al., 2017). The placement of this genus has been uncertain among the Eristalinae species. The description provided by Philippi (1865) does not provide sufficient characters to assign a correct tribe. For the moment, it has been placed by Shannon and Aubertin (1933) inside of Chilosiinae (currently Brachyopini ) while recognizing this taxonomic problem. There are no studies of its biology and ecology of this species.

Conservation status. EN under B2ab (iii) using AOO = 20 km 2 and five localities (or subpopulations); EOO = 66,885 km 2.

Figures

FIGURES 11–15. Orthonevra chilensis Thompson, 1999: (11) dorsal view and (12) lateral view. Scale bars = 0.6 mm. Pia cyanea Philippi, 1865: (13) lateral view (Photo by Vicente Valdés). Scale bar = 1 mm. (14) wing (photo: Vicente Valdés). Scale bar = 0.5 mm and (15) dorsal view (Photo by Patricia Henríquez). Scale bar = 1 mm.

FIGURES 74–78. Flukea vockerothi Etcheverry, 1966: (74–75) visiting flowers of Eucryphia cordifolia Cav., Villarrica (photo by Soledad Gaete); (76) dorsal view (photo by Jorge de la Torre Aninat); (77) eggs (photo by Jorge de la Torre Aninat). Hemixylota unicolor Shannon & Aubertin, 1933: (78) lateral view (photo by Vicente Valdés). Scale bar = 1 mm.