Valdiviomyia gigantea Thompson

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 : 68-69

Valdiviomyia gigantea Thompson in Thompson & Thompson (2017)

Figs 93–96

Valdiviomyia gigantea Thompson in Thompson & Thompson 2017: 17

Type locality and data. “ Valdivia , Chile ” (H, ♀, MNHNCL) .

Material examined. La Araucanía: 1♂, Condominio Amulafquen, Pucón , 15.X.2019, Leg. Miguel Mellado ( ZFMK) ; Los Ríos: 1♂, Province of Valdivia, Valdivia , 29.IX.1989, Leg. E. Krahmer ( PCBRS) ; 1♀, Province of Valdivia, Valdivia , 1.X.1990, Leg. E. Krahmer ( UACH) ; 1♀, Santo Domingo, Valdivia , 9.X.1982, Leg. E. Krahmer ( UACH) ; 1♂, 1♀, Santo Domingo, Valdivia , 1.XI.1983, Leg. E. Krahmer ( PCRBS) ; 2♂, 4♀, Santo Domingo, Valdivia , 1.XI.1983, Leg. E. Krahmer ( UACH) ; 2♂, Valdivia. 18. IX.1980, Leg. Ramón Rebolledo ( PCRR) .

References. Thompson & Thompson, 2017: 16 (desc. & key).

World distribution. Chile.

Chilean distribution. From La Araucanía to Los Ríos region ( Fig. 103 ).

Altitudinal range. From coastal to inland valley ecosystems (5– 250 m.a.s.l.).

Biology and notes. Valdiviomyia gigantea is the second-largest flower fly of Chile and associated with Valdivian evergreen and Nothofogus forests. Other data of its biology and ecology remain unknown.

Conservation status. EN under B1ab (iii) + 2ab (iii) using EOO = 217 km 2, AOO = 12 km 2 and three localities (or subpopulations).

Figures

FIGURE 103. Distribution map of Valdiviomyia camrasi (Sedman, 1965) (blue circles); Valdiviomyia darwini (Shannon, 1927) (red circles); Valdiviomyia edwardsi (Shannon & Aubertin, 1933) (black circles); Valdiviomyia gigantea Thompson, 2017 (Brown circles); Valdiviomyia nigra (Shannon, 1927) (pink circles); Valdiviomyia ruficauda (Shannon, 1927) (yellow circles); Valdiviomyia shannoni Thompson 2017 (green circles); Valdiviomyia valdiviana (Philippi, 1865) (black triangle) in Chile.

FIGURES 91–96. Valdiviomyia darwini (Shannon, 1927): (91) lateral and (92) dorsal view. Scale bars = 2 mm. Valdiviomyia gigantea Thompson, 2017 (93) male, lateral view. Scale bar = 4 mm; (94) female, lateral view. Scale bar = 4 mm; (95) male, terminalia not detached. Scale bar = 4 mm, and (96) wing, dorsal view. Scale bar = 2 mm (photos by Vicente Valdés).