Revision of the genus Cuvierina Boas, 1886 based on integrative taxonomic data, including the description of a new species from the Pacific Ocean (Gastropoda, Thecosomata)

摘要: Shelled pteropods (Gastropoda, Thecosomata, Euthecosomata) are a group of holoplanktonic gastropods that occur predominantly in the surface layers world's oceans. Accurate species identifications essential for tracking changes assemblages planktonic gastropods, because different expected to have sensitivities ocean changes. The genus Cuvierina has worldwide warm water distribution pattern between ~36°N and ~39°S. Based on an integrative taxonomic approach combining morphometric, genetic, biogeographic information, two subgenera Cuvierina, Cuvierinas. str. Urceolarica, rejected. A new is introduced: tsudaisp. n., which date been considered same as pacifica. n. endemic Pacific Ocean characterised by shell height 7.2-8.0 mm, moderately cylindrical shape, absence micro-ornamentation triangular aperture. pacifica restricted centre oligotrophic southern gyre, 6.6-8.5 more no less aperture than