Thylacoplethus isaevae sp. nov., a new colonial rhizocephalan (Crustacea: Rhizocephala: Thompsoniidae) parasitic on a north-west Pacific hermit crab Pagurus trigonocheirus

• Published in: Journal of the Marine Biological Association of the United Kingdom
• Main Authors: Rybakov, Alexey V., Shukalyuk, Andrey I.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 2004
• Subjects: Aquatic Science; Okhotsk; Pacific; Sakhalin
• Online Access: http://dx.doi.org/10.1017/s0025315404010331h; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315404010331

Thylacoplethus isaevae , a new species of colonial rhizocephalans, is described from the hermit crab Pagurus trigonocheirus collected in the Sea of Okhotsk, along the coast of Sakhalin Island. The new species differs from other known species of Thylacoplethus by the presence of complex spermatogenic bodies located within the mantle and the significantly larger size of its externae.