Oedignathus is distinguished from other king crabs in the subfamily Hapalogastrinae by the presence of numerous tubercles on the only slightly flattened chelipeds and legs, and by the paucity of spines, setae; other genera have flattened chelipeds covered in setae, and legs with several large spines.[11]
Ecology
O. inermis lives in pairs under the purplish coralline algae which encrust the rocks around the low tide mark,[6] and may be found at depths of 0–45 metres (0–150ft).[10] When in the littoral zone, O. inermis is associated with mussel beds, but it spends more time in the sublittoral zone.[12]Larvae are released in January and February, at a similar time to other hermit crabs, perhaps to coincide with seasonal blooms of plankton for the larvae to feed on.[13]
↑Landeira, Jose M.; Matsuno, Kohei; Yamaguchi, Atsushi; Hirawake, Toru; Kikuchi, Takashi (March 2017). "Abundance, development stage, and size of decapod larvae through the Bering and Chukchi Seas during summer". Polar Biology. 40 (9): 1805–1809. Bibcode:2017PoBio..40.1805L. doi:10.1007/s00300-017-2103-6.
↑Slizkin, A.G. (2010). "Род Oedignathus Benedict, 1894". Атлас-определитель крабов и креветок дальневосточных морей России[Atlas-determinator of crabs and shrimps of the Far Eastern seas of Russia]. Vladivostok: TINRO Center. pp.28–29. ISBN978-5-89131-071-1.
