A previously unrecognized species of Celastrina from the southeastern coastal plain region of the United States (Lycaenidae: Polyommatinae) named in honor of the memory of Iryna Zarutska.

New species Celastrina iryna is described from the southeastern coastal plain of the United States. This species is most similar to Celastrina neglecta but differs by possession of the unique dorsal overlay of clear wing scales found in Celastrina ladon males. It is hypothesized that this may be a hybrid species. Some aspects of its life history remain unknown and call for further field research. The species name is a tribute to Iryna Zarutska, of Charlotte, N.C.