''Adelieledone polymorpha'', or the Antarctic knobbed octopus, is a species of octopus found in the Antarctic. It was first described by

Guy Coburn Robson Guy Coburn Robson (1888–1945) was a British zoologist, specializing in Mollusca, who first named and described '' Mesonychoteuthis hamiltoni'', the colossal squid. Robson studied at the marine biological station in Naples, and joined the staff ...

in 1930, based on specimens found in South Georgia.

Taxonomy

Robson originally placed ''Adelieledone polymorpha'' in the genus ''

Graneledone ''Graneledone'' is a genus of octopuses in the family Octopodidae The Octopodidae comprise the family containing the majority of known octopus species (about 175 species). Genera The World Register of Marine Species lists these 23 genera: *'' ...

''. It was then placed in the genus ''

Pareledone ''Pareledone'' is a genus of octopuses in the family (biology), family Megaleledonidae. Species * ''Pareledone adelieana'' (S. Stillman Berry, Berry, 1917) * ''Pareledone aequipapillae'' Allcock, 2005 * ''Pareledone albimaculata'' Allcock, 2005 ...

'', but was moved to the genus ''Adelieledone'' in 2003. Robson also split ''Adelieledone polymorpha'' into two varieties, ''oblonga'' and ''affinis''; that distinction was removed in 2003 as it was likely a result of deformation and misclassification of specimens.

Description

''Adelieledone polymorpha'' is of moderate size and robust, with a mantle length of up to 60 millimeters, and a total length of up to 200 millimeters.

References

Octopuses Molluscs of the Southern Ocean Cephalopods described in 1930 {{Octopus-stub