(Tetraonidae; Ϯ Black Grouse L. tetrix) Gr. λυρα lura  lyre; ουρα oura  tail; "46. Sub-genus, LYRURUS  ...  Tail lyrate, i.e. considerably forked, the exterior feathers curved outwards.  Plumage glossy.  Wings moderate, the third quill longest.  Toes naked; the lateral ones equal.  Type. — Lyrurus tetrix, SW. (Tetrao tetrix, AUCT.)" (Swainson 1832).
Var. Lyurus.
Synon. Tetrix.

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2019). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2019). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 23 January 2019).