indicate locations where this species is found according to the scientific record; blue fiddler crabs surrounded by a dashed circle 
indicate the same but for larger, general regions; green fiddler crabs 
indicate “research grade” observations imported from iNaturalist; yellow circles with a question mark 
indicate questionable records of this species from the scientific record; and red circles with an x 
indicate false or mistaken records from the scientific record.
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Balss (1938), Crane (1957), De Man (1891), Huang & Shih (2021), Miers (1886), Naderloo et al. (2016), Naderloo et al. (2010), Ortmann (1894), Parisi (1918), Pesta (1911), Pesta (1913), Poupin (2010), Poupin & Juncker (2008), Rosenberg (2020), Serène (1973), Shih et al. (2016), Shih et al. (2019), Shih & Poupin (2020), Shih et al. (2022), Thurman et al. (2025), Weis & Weis (2013)
