Hitoshi Takakura (Flickr Brachyura), Japan
Info
Helice tridens (De Haan, 1835)
Helice tridens was first described as Ocypode tridens by Wilhem de Haan in 1835 in a volume of Fauna Japonica.[7] The former subspecies Helice tridens wuana and Helice tridens sheni are now listed as an independent species, Helicana wuana.
Helice tridens is a species of crab that lives semi-terrestrially in the mud flats in its range. She returns to the sea to spawn. The crab has a salinity requirement that is between that of two other estuarine crabs in Japan, Helicana japonica and Chiromantes dehaani.
Smaller specimens seek refuge in reed caves, apparently to avoid cannibalism. This could also be the reason for the migration of larger crabs to brackish water lagoons in summer.
Host of Parasites:
Probolocoryphe asadai (Otagaki, 1958)
Microphalloides japonicus (Osborn, 1919) Yoshida, 1938
Paragonimus ohirai Miyazaki, 1939
Synonymised names
Helice latreillei (H. Milne Edwards, 1837) · unaccepted > junior subjective synonym (unjustified emendation)
Helice latreilli (H. Milne Edwards, 1837) · unaccepted > junior subjective synonym (unjustified emendation)
Ocypode (Helice) tridens De Haan, 1835 · unaccepted
Direct children (3)
Subspecies Helice tridens formosensis Rathbun, 1931 accepted as Helice formosensis Rathbun, 1931 (unaccepted > superseded combination)
Subspecies Helice tridens tientsinensis Rathbun, 1931 accepted as Helice tientsinensis Rathbun, 1931 (unaccepted > superseded combination)
Subspecies Helice tridens wuana Rathbun, 1931 accepted as Helice wuana Rathbun, 1931 accepted as Helicana wuana (Rathbun, 1931) (unaccepted > superseded combination)
Helice tridens was first described as Ocypode tridens by Wilhem de Haan in 1835 in a volume of Fauna Japonica.[7] The former subspecies Helice tridens wuana and Helice tridens sheni are now listed as an independent species, Helicana wuana.
Helice tridens is a species of crab that lives semi-terrestrially in the mud flats in its range. She returns to the sea to spawn. The crab has a salinity requirement that is between that of two other estuarine crabs in Japan, Helicana japonica and Chiromantes dehaani.
Smaller specimens seek refuge in reed caves, apparently to avoid cannibalism. This could also be the reason for the migration of larger crabs to brackish water lagoons in summer.
Host of Parasites:
Probolocoryphe asadai (Otagaki, 1958)
Microphalloides japonicus (Osborn, 1919) Yoshida, 1938
Paragonimus ohirai Miyazaki, 1939
Synonymised names
Helice latreillei (H. Milne Edwards, 1837) · unaccepted > junior subjective synonym (unjustified emendation)
Helice latreilli (H. Milne Edwards, 1837) · unaccepted > junior subjective synonym (unjustified emendation)
Ocypode (Helice) tridens De Haan, 1835 · unaccepted
Direct children (3)
Subspecies Helice tridens formosensis Rathbun, 1931 accepted as Helice formosensis Rathbun, 1931 (unaccepted > superseded combination)
Subspecies Helice tridens tientsinensis Rathbun, 1931 accepted as Helice tientsinensis Rathbun, 1931 (unaccepted > superseded combination)
Subspecies Helice tridens wuana Rathbun, 1931 accepted as Helice wuana Rathbun, 1931 accepted as Helicana wuana (Rathbun, 1931) (unaccepted > superseded combination)
