Platypalpus longicornis (Meigen)
Tachydromia longicornis Meigen, 1822: 73 .
Material examined. RUSSIA: Karachay–Cherkess Republic: Teberdinskiy Nature Reserve, Kurort, 15.v.1964, Gorodkov (1 ♂, ZIN); same data, 20.v.1964, Gorodkov (1 ♀, ZIN); same locality, 26.viii.1965, Gorodkov (1 ♂, ZIN); same locality, valley of river Teberda, 22.vi.1982, Nartshuk (1 ♀, ZIN); same data, 8.ix.1965, Gorodkov (1 ♂, ZIN). Krasnodarskiy Territory: district Sochi, Caucasian Nature Reserve, env. lake Kardivatsh, 1.viii.2010, 1800 m a.s.l., S. Kustov (2 ♂, 1 ♀, KSU); same locality, env. lake Sredniy Kardivatsh, 2070–2200 m a.s.l., 1.viii.2010, V. Gladun (1 ♀, KSU); Apsheronskiy district, ridge Azish-Tau, Nature Reserve “Kamyshanova Polyana”, 18.vi.2011, I. Shamshev (1 ♀, ZIN).
Distribution. Austria, Belgium, Britain, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Ireland, Italy, Lithuania, Netherlands, Norway, Poland, Russia (north, north-west and centre of the European part, Karachay-Cherkessia, Krasnodarskiy Territory), Spain, Slovakia, Sweden, Switzerland, Ukraine.
Remarks. The species is recorded from the Caucasus for the first time. Platypalpus longicornis is not common, known from mountain forests and subalpine meadows between 1200 to 2200 m a.s.l. and is active from May to September.