Elachista tetragonella (Herrich-Schäffer, 1855)

Poeciloptilia tetragonella Herrich-Schäffer, 1855: 301, 308. Type locality: Switzerland, Engelbergs (Frey 1856: 288). Holotype (sex not stated), in NHMUK.

Elachista tetragonella: Frey (1856: 287) .

Subgenus: Elachista; tetragonella species group.

Distribution: Palearctic. Austria, Bulgaria, Czech Republic, Finland, France, Germany, Hungary, Italy, Russia (European part), Slovakia, Spain, Sweden, Switzerland, Ukraine.

Larval host plant(s): Carex montana L. ( Cyperaceae) (Stainton 1858a; Martini 1916; Steuer 1978).

Figs.: Traugott-Olsen & Nielsen (1977), Biesenbaum (1995), Steuer (1978).