Its single species, Acsala anomala, has Hodges number 8104.1[1] and is known from the US (Alaska) and Canada (Yukon).

[2] Eggs are deposited in a single layer on the underside of rocks, in batches of up to thirty, and take eight to ten days to hatch.

[3] Species of Buellia, Lecidea, Orphniospora, Parmelia and Umbilicaria have been recorded as food sources.

[2][3] Adult males possess weak flight and are day-active; females are flightless and spend much of their time under rocks.

[4][5] Subtribe Acsalina was introduced in 1983 by Franclemont, but remained a nomen nudum until a formal description was given in 1999 by Amel Bendib and Joël Minet.