Elachista triatomea (Haworth, 1828)

Porrectaria triatomea Haworth, 1828: 535 . Type locality: [England]. Lectotype ♂ designated by Bradley (1966a: 134), in OUMNH.

Elachista triatomea: Stainton (1849: 27) .

Elachista bipunctella Treitschke, 1833: 181 . Type locality: Austria, Vienna region. Type (s) in HNHM. Synonymized by Stainton (1849: 27).

‡ Elachista triatomella Doubleday, 1859: 35 . Unavailable, not accompanied by a description. See Remarks.

Elachista triatomella Morris, 1870: 227, pl. 129, fig. 16. Type localities: England: Scarborough, Lewes, Sanderstead, Mickleham, Cambridge, Bristol, Alkham, Darlington, Newcastle-on-Tyne. Undefined number of syntypes; auctioned, probably lost.

Poeciloptilia triatomea: Herrich-Schäffer (1855: 312) .

Subgenus: Aphelosetia; argentella species group.

Distribution: Palearctic. Austria, Czech Republic, Denmark, France, Ireland, Finland, Hungary, Norway, Poland, Sweden, U.K. (England, Scotland, Wales).

Larval host plant(s): Festuca ovina L., F. rubra L., F. tenuifolia Sibth. (Poaceae) (E. Hering 1891; Traugott-Olsen & Nielsen 1977).

Figs.: Traugott-Olsen & Nielsen (1977), Bland (1996).

Remarks: Morris (1870: 227) validated the name triatomella . However, he referred to Doubleday (1859: 35) for the identity of the species. Doubleday, in turn, gave triatomea as a ‘synonym’ of triatomella . However, Haworth (1828: 535) is the first author of the name triatomea . Therefore triatomella Morris, 1870 is a secondary junior synonym of Porrectaria triatomea Haworth, 1828 .