Boreomysis (Boreomysis) G. O. Sars, 1869

Daneliya, Mikhail E., 2023, Mysid Subfamily Boreomysinae (Crustacea: Mysida: Mysidae) in the Southeast Australian Deep-sea, Records of the Australian Museum (Rec. Aust. Mus.) 75 (2), pp. 87-124 : 93

Boreomysis (Boreomysis) G. O. Sars, 1869

Type species. Mysis arctica Krøyer, 1861 .

Diagnosis. Anterior margin of carapace with distinct rostrum and large ventrolateral projections. Eyes with dorsolaterally flattened, oval, nearly rounded or occasionally reduced cornea. Pereopod propodus 2-segmented (except in B. dubia ).

Distribution and habitat. Cosmopolitan. Epi-bathypelagic (0–6000 m).

DNA divergence. The mtDNA COI gene divergence between all the studied species of the subgenus Boreomysis sensu stricto was 16–54% of model corrected distance. The divergence between Boreomysis sensu stricto and Petryashovia subgen. nov. was 57–84%.

Composition. The subgenus Boreomysis sensu stricto includes 34 species ( Table 1). Among them three species have so far been discovered in the Australian deep waters: Boreomysis (Boreomysis) inopinata sp. nov., Boreomysis (Boreomysis) sibogae , and Boreomysis (Boreomysis) sphaerops Ii, 1964 .