I. aurantiellina I. serusiauxii Ikaeria is a genus of two species of crustose lichens in the family Teloschistaceae.

Both species grow on twig bark of shrubs and trees.

It was circumscribed in 2017 by lichenologists Sergey Kondratyuk, Dalip Kumar Upreti, and Jae-Seoun Hur, with Ikaeria aurantiellina assigned as the type species.

[2] Ikaeria has a sister group relationship with genus Yoshimuria; both are in the subfamily Caloplacoideae of the Teloschistaceae.

Ikaeria is named in honour of Swedish lichenologist Ingvar Kärnefelt.