''Scylla'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of swimming crabs, comprising four species, of which '' S. serrata'' is the most widespread. They are found across the

Indo-West Pacific The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the s ...

. The four species are:

References

Portunoidea Decapod genera Taxa named by Wilhem de Haan {{Portunoidea-stub