Dorsal view of Atergatis floridus (Photo Credit: Andrew Hoise)

Floral egg crab or shawl crab

Atergatis floridus

This crab has an oval and smooth carapace that can reach 10 cm in width. It is dark green or brown with a white lace-shawl pattern (from where it gets its common name). The tips of the chelipeds are dark brown or black.

Morphology

Carapace with regions poorly defined and lacking lateral teeth. Chelipeds are similar in size, short eye stalks.

Evolution

The species is toxic, containing (like others in the family) the toxin tetrodoxin (the same found in puffer fish).

Behaviour

Largely nocturnal, tends to hide in crevices or coral rubble.

Method of reproduction

Sexual

Habitat

Marine

Found on coral or rock reefs in the low intertidal and shallow subtidal zones.

Distribution

Eastern Indian Ocean

Life Cycle

Several planktonic larval stages.

Taxonomy

Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Subclass: Eumalacostraca
Superorder: Eucarida
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Superfamily: Xanthoidea
Family: Xanthidae
Genus: Atergatis
Species: floridus
Name Published Year: 1767
Scientific Name Authorship: Linnaeus
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/atergatis-floridus
Accessed 17 May 2024

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