Subgenera and Species
The internal classification of the genus Uca is unstable, but it contains around 100 species arranged among 9 subgenera:
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Read more about this topic: Fiddler Crab
Famous quotes containing the word species:
“The question that will decide our destiny is not whether we shall expand into space. It is: shall we be one species or a million? A million species will not exhaust the ecological niches that are awaiting the arrival of intelligence.”
—Freeman Dyson (b. 1923)