Fenestrulina epiphytica is recorded from Heron Island, Queensland, Australia. It is an epiphyte on Sargassum.
Original description: Fenestrulina epiphytica Hayward & Ryland 1995.
Locality: Heron Island, Queensland, Australia.
Holotype: QM G3904960; Paratype: QM G3904964.
Description from Hayward & Ryland, 1995.