Sepsis flavimana Meigen, 1826

Patrick T. Rohner & Gerhard Bächli, 2016, Faunistic data of Sepsidae (Diptera) from Switzerland and additional countries including the first Swiss record of Meroplius fukuharai (Iwasa, 1984), Mitteilungen der Schweizerischen Entomologischen Gesellschaft 89, pp. 237-260 : 247-248

Sepsis flavimana Meigen, 1826

Material: Switzerland: AG:Würenlingen, 420 m, 20.vii.1996, 14.viii.1997; Würenlingen/alter Steinbruch, 420 m, 15.viii.1991; Würenlingen/Firsthalde, 420 m, 13.v.1998, 14.viii.1991. BE:Guttannen, 1000 m, 6.viii.1999; Ligerz, 450 m, 29.v.2010; Ruppoldsried, 500 m, iv.–x.1987 (leg. Duelli). BL:Bubendorf, 8.– 15.vi.2000, 15.–22.vi.2000, 6.–13.vii.2000, 13.–20.vii.2000, 17.–24.viii.2000, 24.– 31.viii.2000, 31.viii.–7.ix.2000 (all leg. Wolf). GL:Klöntal, 850 m, 11.–14.ix.1974; Richisau, 1100 m, 7.–11.viii.1995; Schwändital, 1250 m, 2000 (leg. Duelli). GR: Celerina, 1890 m, 2000 (leg. Duelli); Dischmatal, 1600 m, 16.–30.vi.1990, 16.– 30.vi.1991, 1.–15.vii.1990, 1.–15.vii.1991, 1.–15.vii.1992, 16.–31.vii.1990, 16.– 31.vii.1991, 1.–24.viii.1990, 1.–27.viii.1992 (all leg. Brodmann); Ftan/Clünas, 2000 m, 6.viii.1996 (leg. Merz &Bächli); Lenzerheide, 1500 m, 8.viii.1998; Nationalpark, 2000 m, 2005 (leg. Duelli); Rothenbrunnen, 630 m, 8.viii.1996 (leg. Merz &Bächli); Zernez, 1450 m, 4.viii.1996 (leg. Merz &Bächli); Zernez/Gon., 1500 m, 4.–7.viii.1996; Zuoz/Nüd, 1700 m, 7.viii.1996. JU:La Chaux-des-Breuleux, 1000 m, 28.vi.2003. LU:Dierikon, 550 m, 2000, 2001, 2003, 2005 (all leg. Duelli); Luzern, 550 m, 24.vi.–5.viii.2006 (leg. Sattler); Menzberg; 1000 m, 3.–6.vii.1983; Ruswil, 800 m, 2001 (leg. Duelli). SH:Merishausen, 540 m, 26.vii.2001. SO:Messen, 500 m, 15.iii.2004, 18.viii.2004, 30.viii.2004 (all leg. Wermelinger); Weissenstein, 1000 m, 25.vi.2006. SZ:Alptal, 1150 m, 2000 (leg. Duelli); Biberbrugg, 1000 m, 25.vi.2011; TG:Lommis/Immenberg, 700 m, 4.viii.2007. TI:Acquacalda, 1800 m, 22.–24.vi.2001; Fusio, 1300 m, 26.vii.1997; Robiei, 1900 m, 4.–5.vii.2008. VS: Grône/Poutafontana, 520 m, 1.vii.2001; Guttet, 1500 m, 29.vii.–6.viii.1993; Jeizinen, 1500 m, 10.viii.2013; Morgins/Portes de Culet, 1800 m, 28.vii.2004; Morgins/Portes du Soleil, 1800 m, 27.vii.2004; Morgins/Vièze, 1400 m, 27.vii.2004; Visp, 650 m, 2000 (leg. Duelli). ZH:Dietikon, 550 m, 6.vi.2015; Flaach, 350 m, 30.vi.2000; Zürich/Hönggerberg, 520 m, 1.vii.2011, 15.–19.vii.1989, 18.– 23.vii.1980, 24.–28.vii.1987, 2.–6.viii.1997.

Czech Republic:Val/Veseli n.L., 19.viii.1998. Romania:Calimani, 1700 m, 27.vii.1978; Cimpulung, 600 m, 23.v.1981, 28.v.1984, 700 m, 16.viii.1987, 800 m, 7.viii.1983; Codz. Voiv., 500 m, 7.v.1984; Val. Pulnei, 1000 m, 18.vii.1981 (all leg. Ceianu).

Distribution:Holarctic ( Ozerov 2005).

Comments:This species is widespread and can be locally very abundant. It is apparentlyspecialized on cow dung ( Pont &Meier 2002). Small specimens can be mistaken for S. biflexuosa or S. nigripes ,but can be differentiated from the latter two mainly by the characteristic beak-like shape of the hypopygial surstylus in both lateral and posterior views (e.g.: Pont &Meier 2002; Rohner et al. 2014).