Libinia emarginata

Libinia emarginata
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Epialtidae
Genus: Libinia
Species:
L. emarginata
Binomial name
Libinia emarginata
Leach, 1815 
Synonyms 

Libinia canaliculata Say, 1817

Libinia emarginata, the portly spider crab, common spider crab or nine-spined spider crab, is a species of stenohaline crab that lives on the Atlantic coast of North America.