Hyppa xylinoides. In the Franclemont and Todd (1983) check list the name Hyppa ancocisconensis was relegated to the synonymy of Hyppa xylinoides leaving the species associated with the name H. ancocisconensis apparently not described. Troubridge and Lafontaine (2004a) treated the species formerly associated with the name H. ancocisconensis as a northern form of H. contrasta and confirmed the synonymy of H. ancocisconensis and H. xylinoides.

• Franclemont JG, Todd EL (1983) Noctuidae. pp. 120-159. In: Hodges et al. (1983).
• Troubridge JT, Lafontaine JD (2004a) A revision of the genus Hyppa (Lepidoptera: Noctuidae) with description of a new species. The Canadian Entomologist 136: 299-311.