Red-eyed rock crab (Eriphia sebana) from the Montebello Islands (Photo: Ana Hara)

Red-eyed rock crab

Eriphia sebana

This crab is commonly found on rocky shores of northern Australia. It has a brown carapace and it can be recognised by the red eyes with white eye stalks.

Morphology

Carapace is rounded, with small granules on the surface and small teeth on the edges, both of which decrease in size towards the posterior side. The claws are smooth and can have a lighter cream colour on dactyls, while the walking legs are hairy. The males and females are similar in appearance, except for often larger claws in males.

Evolution

This genus resembles the crabs from the family Xanthidae but differs in males having seven abdominal segments and very long second pleopods.

Behaviour

Even though Eriphia sebana is commonly seen under rocks, on coral rubble or in rock holes it is not easy to collect as it tends to tightly wedge itself amongst the rocky substrate.

Method of reproduction

Sexual

Habitat

Marine

Intertidal or low-subtidal rocky areas

Distribution

Indo-West Pacific

Taxonomy

Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Subclass: Eumalacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Eriphiidae
Genus: Eriphia
Species: sebana
Name Published Year: 1803
Scientific Name Authorship: Shaw & Nodder
Commercial Impact: 

None

Conservation Assessment: Least Concern

Net Conservation Benefits Fund

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Western Australian Museum Collections https://museum.wa.gov.au/online-collections/names/Eriphia-sebana
Accessed 30 Apr 2025

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