Calcinus sirius (Morgan, 1991)

Distribution: 

Relatively common in the Solitary Islands Marine Park. Recorded from Eastern Australia, New Zealand, Norfolk Island and the islands of southern French Polynesia. In Australia recorded from Elizabeth and Middleton Reefs, Lord Howe Island.

Ecological Notes: 

Species of Calcinus are abundant on firm substrates in tropical waters. Rocky or coral reef. Depth from 2 to 22 m.

Additional Notes: 

Shield pale with orange tinge, claws pale, carpus, or wrist, red with white spots. Walking legs pale reddish, darker at the joints, eyestalks reddish-brown fading distally, eyes black with many small white spots. A small species with a shield length of around 5.5 mm. 

References: 

 

Diana Jones, Gary Morgan, A Field Guide to Crustaceans of Australian Waters, Western Australian Museum, Reed Publishers, Sydney, 1994. p. 113.

Atlas of Living Australia website at https://bie.ala.org.au/search?q=calcinus+sirius. Accessed 22/01/2022.

Hermit Crabs of the World (Anomura: Diogenidae), Joseph Poupin. http://biomar.free.fr/calcinus/www/sirius.htm. Accessed 22/01/2022.

Identification thanks to Dr Joseph Poupin, Ecole Navale, Brittany, France.