Fannia anthracina (Walker, 1836)

Gomes, Lucas R. P., Couri, Márcia S. & De Carvalho, Claudio J. B., 2018, Anthomyiidae, Fanniidae and Muscidae (Diptera) from the Juan Fernández Archipelago (Chile): 60 years after Willi Hennig’s contributions, Zootaxa 4402 (2), pp. 373-389 : 378-379

Fannia anthracina (Walker, 1836)

( Figs. 16, 17 )

Diagnosis: General coloration of body dark blue; antenna and palpus dark brown; arista bare and enlarged at base; dorsocentral setae 2+4; katepisternal setae 1+1; calypters light brown with border dark brown. Male: fore tarsomeres slightly flattened, only the first two tarsomeres laterally white except for basal black spot; mid tibia with ventral constriction forming ventral curling; hind femur without preapical tubercle on ventral surface, four long anteroventral setae, followed by row of weaker setae towards base; sternite 1 setulose. Body length: 5.2-6.0 mm. Wing length: 4.4–5.2 mm.

Material examined: CHILE: Juan Fernández , Robinson Crusoe Island, 1 male, Bahia Cumberland, 1– 10.i.1993, Marshall & Gonzalez ; 17 females, Mirador Selkirk, 1–10.i.1993, S. A. Marshall; 1 male, Plazoleta - El Yunque, 23–28.i.1992, S. A. Marshall; 1 female, Damajuana, 8–11.i.1993, S. A. Marshall; 1 female, open forest, dung traps, 23–28.i.1992, S. A. Marshall; 2 males and 1 female, Plazoleta, 24–29.i.1992, S. A. Marshall; 1 male and 33 females, pans near Plazoleta, open forest, 1–9.i.1993, S. A. Marshall; 1 female, Plazoleta - El Yunque, 23– 28.i.1992, S. A. Marshall; 3 females, Puerto Ingles, 5.i.1993, S. A. Marshall; 2 females, 23–28.i.1992, S. A. Marshall.

References: Malloch (1934), Pont (1965), Pont & de Carvalho (1994), Domínguez (2007). Distribution: Argentina, Chile (including Juan Fernández Archipelago) and Falkland Islands (Pont & de Carvalho 1994).

Biology: This species belongs to the anthracina species-group of Fannia . All species of this group are distributed in Notophagus forests endemic to the Argentinean and Chilean Patagonia ( Domínguez 2007). Comments: Hennig (1955) identified one specimen at Robinson Crusoe Island ( Table 1).

Figures

FIGURES 16–17. Fannia anthracina (Walker, 1836):(16) male and (17) female, lateral view.Scale:0.5 mm.