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Uca vocans
Original Usage
Cancer vocans
Original Source with Priority
Linnaeus, C. (1758) Systema Naturæ. 10th Edition, Volume I.
Latin for “calling.” This is the general source of the common name “calling crabs” for species in this genus.

Locations Where the Name has Been Applied

Number of Uses of Name per Year


The specific name vocans has priority from Linnaeus (1758), although he adopted the name from Rumphius (1705).

As the original taxonomic name applied to fiddler crabs, vocans was widely used for all species in the last 18th and early 19th centuries, leading to a lot of taxonomic confusion. In the late 19th and early 20th centuries, many authors suggested abandoning the name entirely due to its earlier ambiguity, but eventually its priority took hold.

Binomials Using this Specific Name