What is "lithodryas"

Lithodryas is a prehistoric genus of butterfly in the family Lycaenidae . It was introduced as a replacement for Samuel Hubbard Scudder's genus Lithopsyche which is invalid as a homonym, as another fossil lepidopteran genus had been described under the same name shortly before Scudder established his genus.

The type species was found in Tertiary deposits at Florissant.