Rhynchonellata - Athyridida - Athyrididae

Alternative combination: Spirigera papilio

Synonym: Spirigera aquilina Stache 1878

Belongs to Janiceps according to R. Posenato 2001

Sister taxa: Janiceps bipartita, Janiceps cadorica, Janiceps emarginatiformis, Janiceps lozovskyi, Janiceps ogbinensis, Janiceps peracuta

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): shell 19.8 x 31.1, valve 19.9 x 32.7