Hypena ramstadtii, or Ramstadt's hypena, is a species of moth in the family Erebidae. It was first described by Alex K. Wyatt in 1967 and is found in North America.
References
Crabo L, Davis M, Hammond P, Mustelin T, Shepard J (2013). "Five new species and three new subspecies of Erebidae and Noctuidae (Insecta, Lepidoptera) from Northwestern North America, with notes on Chytolita Grote (Erebidae) and Hydraecia Guenée (Noctuidae)". ZooKeys 264: 85-123. Lafontaine, J. Donald & Schmidt, B. Christian (2010). "Annotated check list of the Noctuoidea (Insecta, Lepidoptera) of North America north of Mexico". ZooKeys, vol. 40, 1–239.
Further reading
Arnett, Ross H. (2000). American Insects: A Handbook of the Insects of America North of Mexico. CRC Press.