species: Pteraeolidia semperi in Lizard Island area: all known taxa (Lizard Island Field Guide)
Pteraeolidia semperi

©Anne Hoggett: Pteraeolidia semperi near the sandspit at Palfrey Island, Lizard Island Group.

©Barbara Banks: Pteraeolidia semperi about 6 cm long at Casuarina Beach, Lizard Island. This individual does not have blue tips to rhinophores.

©Cassy Thompson: Pteraeolidia semperi from Lizard Island (aquarium shot)
Kingdom Animalia
Phylum Mollusca
Class Gastropoda
Order Nudibranchia
Family Facelinidae
Genus Pteraeolidia
Species Pteraeolidia semperi



Distinguishing features

A very long, thin nudibranch with many clusters of cerata.


  • Size data has not been obtained.


Similar taxa

  • Animalia: species: Pteraeolidia ianthina
    has been recorded many times from Lizard Island and elsewhere in the Indo-Pacific. However, Wilson and Burghardt (2015) determined that the species is found only in New South Wales. Dr Richard Willan (NT Museum) advised in Dec 2015 that the name Pteraeolidia semperi should be applied to the Lizard Island specimens.


©Atlas of Living Australia: Australian distribution

Local abundance

  • Lizard Island: Many records of this species in LIFG

Web resources


References that assist with identification

  • Humann, P. and N. Deloach (2010). Reef Creature Identification: Tropical Pacific New World Publications Inc., Jacksonville, Florida, USA.

Other references

  • Burghardt, I. (2006). Biologie, Diversitaet und Evolution "solarbetriebener" Nudibranchia (Mollusca: Gastropoda) und ihrer Symbiose mit Zooxanthellen, Ph.D. thesis, Ruhr-Universitaet Bochum, Germany. LIRS catalog number 1063.
  • Burghardt, I., J. Evertsen, G. Johnsen and H. Waegele (2005). Solar powered sea slugs - mutualistic symbiosis of aeolid Nudibranchia (Mollusca, Gastropoda, Opisthobranchia) with Symbiodinium, Symbiosis, 38: 227-250. LIRS catalog number 916.
  • View all references