species: Pseudobiceros flowersi in Lizard Island Field Guide (Lizard Island Field Guide)
Pseudobiceros flowersi

©Alexander Semenov: Pseudobiceros flowersi at Mermaid Cove, Lizard Island (AM W.44685)

©Anne Hoggett: Pseudobiceros flowersi in a shallow pool at low tide on the reef flat at Eyrie Reef near Lizard Island.

©Mike Bok: Pseudobiceros flowersi from Lizard Island.
Kingdom Animalia
Phylum Platyhelminthes
Class Rhabditophora
Order Polycladida
Family Pseudocerotidae
Genus Pseudobiceros
Species Pseudobiceros flowersi



Distinguishing features

Green/brown ground colour with a thin white midline that is bordered with darker lines that may be diffuse. Three marginal bands: a broad dark one, then a narrower green/brown one, then a fine white band on the margin. Large specimens are very "frilly", smaller ones less so.


  • Up to 9 cm (Length)



©Atlas of Living Australia: Australian distribution

Web resources


References that assist with identification

  • Marquina, D., Aguado, M. T. and C. Norena (2015). New records of Cotylea (Polycladida, Platyhelmenthes) from Lizard Island, Great Barrier Reef, Australia, with remarks on the distribution of the Pseudoceros Lang, 1884 and Pseudobiceros Faubel, 1984 species of the Indo-Pacific Marine Region, Zootaxa, 4019 (1): 354-377. LIRS catalog number 1922.
  • Newman, L.J. and L.R.G. Cannon (1997). Nine new species of Pseudobiceros (Platyhelminthes: Polycladida) from the Indo-Pacific, Raffles Bulletin of Zoology, 45(2): 341-368. LIRS catalog number 703.

Other references

  • Dittmann, I.L., D. Cuadrado, M.T. Aguado, C. NoreƱa and B. Egger (2019). Polyclad phylogeny persists to be problematic. Organisms Diversity and Evolution, 19: 585-608. LIRS catalog number 2358.