Two new pygmy squids, Idiosepius kijimuna n.sp. and Kodama jujutsu n.gen., n.sp. (Cephalopoda: Idiosepiidae) from the Ryukyu Islands, Japan

Reid, Amanda, Sato, Noriyosi, Jolly, Jeffrey, and Strugnell, Jan (2023) Two new pygmy squids, Idiosepius kijimuna n.sp. and Kodama jujutsu n.gen., n.sp. (Cephalopoda: Idiosepiidae) from the Ryukyu Islands, Japan. Marine Biology, 170 (12). 167.

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Abstract

Two new pygmy squid from the Ryukyu archipelago, Japan, are described: Kodama jujutsu, n. gen., n. sp. and Idiosepius kijimuna, n. sp. They differ from all other nominal species in a combination of traits, including the number of tentacular club suckers, shape of the funnel-mantle locking-cartilage, modification of the male hectocotylus and the structure of the gladius and nuchal-locking cartilage, in addition to mitochondrial DNA markers (12S, 16S and COI). They are both known from Okinawa Island and there is some overlap in their distributions. In a molecular phylogeny that includes all nominal Idiosepiidae, Kodama jujutsu, n. gen., n. sp. is sister taxon to a clade containing Xipholeptos Reid & Strugnell, 2018 and Idiosepius Steenstrup, 1881. Xipholeptos and Idiosepius are sister taxa. Idiosepius spp. now includes seven nominal species. In addition, aspects of the behaviour of the new species are described.

Item ID: 80808
Item Type: Article (Research - C1)
ISSN: 1432-1793
Keywords: Idiosepius, Idiosepius kijimuna, Kodama, Kodama jujutsu, Pygmy squid, Ryukyu archipelago
Copyright Information: © The Author(s) 2023. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Date Deposited: 15 Feb 2024 00:19
FoR Codes: 31 BIOLOGICAL SCIENCES > 3103 Ecology > 310305 Marine and estuarine ecology (incl. marine ichthyology) @ 100%
SEO Codes: 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280102 Expanding knowledge in the biological sciences @ 100%
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