Lissocarcinus orbicularis (Dana, 1852)

Common Name: 
Harlequin Crab

Uncommon in the Solitary Islands Marine Park. Distributed throughout the Indo-West Pacific region. In Australia recorded from around Exmouth in Western Australia, the Great Barrier Reef in Queensland south to northern New South Wales.

Ecological Notes: 

Usually associated with sea cucumbers in a symbiotic relationship. 

Additional Notes: 

Juvenile pictured approximately 7 mm carapace width. Adults with a distinctive dark on white pattern which is sometimes reversed.  


Identification thanks to Peter Davie, Senior Curator, Crustacea, Queensland Museum, Brisbane.

Davie, Peter. Wild Guide to Moreton Bay and Adjacent Coasts. Second Edition. Published by Queensland Museum. Vol 2, p.237.

Atlas of Living Australia website at Accessed 13/11/2018.