Xyela erichsoni Dahlbom, 1835: 16, sex?, Sweden: Jemtlands län [“Jemtlandia”]; nomen nudum.
Xyela erichsonii: Hartig 1837: 352 (misspelling); Dalla Torre 1894: 399 (unjustified emendation).
Remarks. Dahlbom (1835) listed Xyela erichsoni as follows: “ Xyela Erichsoni mih. nov. sp.—Jemtlandia, D. Boheman”. This taxon has been treated as available, e.g., by Hartig (1837) but as unknown to the author, and by Klima (1937) under species inquirendae. Thomson (1871), who had studied Dahlbom’s material, did not take note of it. Hartig (1837) and Dalla Torre (1894) listed it as erichsonii, an unjustified emendation. Schedl (1978) associated X. erichsoni with Xyelatana (= Xyela longula group). The name has to be set aside as a nomen nudum (Smith 1978), because it was not accompanied by an original description (Art. 12.1, ICZN 1999).