Austruca perplexa
Perplexing Fiddler Crab
Type Description
Gelasimus perplexus Milne Edwards, H. (1852) Observations sur les affinités zoologiques et la classification naturelle des crustacés. Annales des Sciences Naturelles. Zoologie (Série 3) 18:109–166.
Taxonomy
Subfamily Gelasiminae → Supertribe Gelasimitae → Tribe Gelasimini → Genus Austruca → Subgenus Austruca Common Names
Synonyms, Alternate Spellings, & Name Forms (Chronology )
Austruca (Austruca) perplexa Austruca orientalis Austruca perplexa Gelasimus annulipes var. orientalis Gelasimus annulipes var. perplexa Gelasimus annulipes var. perplexus Gelasimus perplexus Uca (Austruca) perplexa Uca (Celuca) lactea perplexa Uca (Paraleptuca) perplexa Uca annulipes subsp. orientalis Uca annulipes var. orientalis Uca lactea perplexa Uca perpkxa Uca perplesca Uca perplexa Uca perplrxa Size
Small Carapace Breadth: 11.9 mm ± 3.18 (sd), 95% range: 5.6–18.1 mm (Data )
Geographic Range
Indo-West Pacific Realm: found throughout virtually the entirety of the central and western Pacific islands, between American Samoa to the east and the Andaman Islands along the eastern edge of the Indian Ocean to the west, including continental Malaysia, eastern Thailand, Cambodia, and possibly Vietnam; Taiwan; the Ryukyu Islands; eastern Australia
Purple fiddler crabs iNaturalist ; yellow circles with a question mark
Range map data derived from: Barnes (2010) ; Naderloo et al. (2010) ; Poupin (2010) ; Shih et al. (2009) ; Shih et al. (2010)
Associated Field Guides
Borneo Central Indonesia Central Melanesia Eastern Australia Eastern Malay Peninsula and Mainland Southeast Asia Main Islands of Japan New Guinea Philippines Ryuku Islands, Japan Singapore and Johor, Malaysia Sumatra Taiwan Western Micronesia External Links
Encyclopedia of Life Wikipedia iNaturalist NCBI Taxonomy Browser/Genbank GBIF
No videos available at this time.
Alcock (1900) ,
Aoki et al. (2009) ,
Aprilyanto et al. (2017) ,
Aprilyanto et al. (2017) ,
Barnes (2010) ,
Barnwell (1980) ,
Boone (1934) ,
Bott (1973) ,
Castro (2011) ,
Crane (1975) ,
Davie (1982) ,
De Man (1892) ,
De Man (1902) ,
Dewiyanti et al. (2018) ,
Doflein (1904) ,
Edmondson (1933) ,
Edmondson (1946) ,
Edmondson (1962) ,
Frith et al. (1976) ,
Fujita (2018) ,
Fukui et al. (1989) ,
Geist et al. (2012) ,
George & Jones (1982) ,
Ho et al. (1993) ,
Huang & Shih (2021) ,
Ikeda et al. (2004) ,
Irie et al. (2005) ,
Ishigami et al. (2005) ,
Jaroensutasinee & Jaroensutasinee (2004) ,
Jones & George (1982) ,
Juncker & Poupin (2009) ,
Kawaida et al. (2017) ,
Kingsley (1880) ,
Kuhapong et al. (2021) ,
Lagare et al. (2020) ,
Lauren & Sumarmin (2020) ,
Laurie (1906) ,
Lenz (1910) ,
Maccagno (1928) ,
Macnae (1966) ,
Macnae (1967) ,
Macnae (1968) ,
Maitland (1990) ,
Michie et al. (2015) ,
Milne Edwards (1852) ,
Milne Edwards (1854) ,
Milne-Edwards (1873) ,
Miyake (1936) ,
Miyake (1938) ,
Miyake (1939) ,
Mookui et al. (2012 [2555]) ,
Murniati (2010) ,
Murniati (2015) ,
Murniati & Pratiwi (2015) ,
Musgrave (1929) ,
Nabout et al. (2010) ,
Naderloo et al. (2016) ,
Naderloo et al. (2010) ,
Naiyanetr (2007) ,
Nakasone (1982) ,
Nakasone & Kawa (1983) ,
Ng et al. (2008) ,
Ng & Richer de Forges (2007) ,
Ng et al. (2017) ,
Ng et al. (2009) ,
Ng et al. (2001) ,
Nhưộng (2003) ,
Nobili (1901) ,
Nobili (1903) ,
Nobili (1906) ,
Oliveira (1939) ,
Ortmann (1894) ,
Ortmann (1897) ,
Owen (1839) ,
Poupin (2010) ,
Rathbun (1906) ,
Rathbun (1910) ,
Rathbun (1924) ,
Rosenberg (2000) ,
Rosenberg (2001) ,
Rosenberg (2002) ,
Rosenberg (2014) ,
Rosenberg (2020) ,
Roux (1917) ,
Sakai (1936) ,
Sari (2004) ,
Serène (1973) ,
Shih (2013) ,
Shih et al. (2013) ,
Shih et al. (2010) ,
Shih et al. (2016) ,
Shih et al. (2010) ,
Shih et al. (2019) ,
Shih & Poupin (2020) ,
Shih et al. (2022) ,
Smith (2003) ,
Stephensen (1946) ,
Takeda & Murai (2004) ,
Tan & Ng (1994) ,
Tanaka et al. (2004) ,
Tanase & Wada (2019) ,
Tesch (1918) ,
Thallwitz (1891) ,
Thurman et al. (2025) ,
Tina (2020) ,
Tina et al. (2018) ,
Tina & Keeratipattarakarn (2019) ,
Tina & Muramatsu (2020) ,
Veitch (1978) ,
Wada (2001) ,
Wada (2019) ,
Wada (2019) ,
Wada (2020) ,
Weis (2012) ,
Williams et al. (1980) ,
Yamaguchi & Baba (1993) ,
Yoshigou (2001) ,
Zulfahmi et al. (2021)
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.
