Markhaseva E.L.1, Zimina O.L.1,2 2025. Archimisophria (Copepoda: Misophrioida: Speleophriidae) first recorded from Arctic Ocean with the description of the new species // Arthropoda Selecta. Vol.34. No.4: 522–539 [in English].
1 Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St. Petersburg 199034 Russia.
2 Murmansk Marine Biological Institute RAS, Vladimirskaya 17, Murmansk 183010 Russia.
Elena Markhaseva: markhaseva@gmail.com ORCID https://orcid.org/0000-0002-6325-0395
Olga Zimina: Olga.Zimina@zin.ru ORCID https://orcid.org/0000-0003-0844-6085
doi:10.15298/arthsel.34.4.06
ABSTRACT. Two new deep-water benthopelagic misophrioid copepods of the genus Archimisophria Boxshall, 1983 were collected from the High Arctic. A new species Archimisophria paradiscoveryi sp.n. is described based on specimens of both sexes. It is related to A. discoveryi Boxshall, 1983, but differs in several characters: 1) male antennulary ancestral segments XIX–XX are armed with two long and one short setae, 2) segments XXI–XXII carry a narrow ribbon-like chitinous thickening and lack a seta, 3) antenna proximal exopodal segment lacks a seta, and 4) the P5 is 5-segmented. The female of A. paradiscoveryi sp.n. is distinguished from A. discoveryi in the P5 having more than 3 segments and from all known congeners in having a P6 lateral seta reaching beyond posterior border of urosomite 3. The new species Archimisophria arctica sp.n. is known only from female. It shares the presence of sensory setae on the maxillule coxal and proximal endites with A. squamosa Alvarez, 1985 and A. paradiscoveryi sp.n., but differs from its congeners in P6 lateral seta short, not reaching posterior border of Gns in combination with tiny medial seta.
The genus Archimisophria has been recorded from about 34°N and 24°S in the Atlantic Ocean and in the Indian Ocean without given locality and for the first time it is recorded from the high Arctic (82°N), thus representing the northernmost finding of the genus. This discovery is also the first record of the genus Archimisophria and family Speleophriidae in the Arctic Ocean.
KEY WORDS: Copepoda, Misophrioida, Archimisophria, deep-water benthopelagic, Arctic Ocean.