Journal
PEERJ
Volume 9, Issue -, Pages -Publisher
PEERJ INC
DOI: 10.7717/peerj.12530
Keywords
Cladistic analysis; Crustacea; East Asia; Morphology; Taxonomy
Categories
Funding
- National Marine Biodiversity Institute Research Program [2021M01100]
- National Research Foundation of Korea (NRF) through the Korea government (MSIT) [2021R1F1A1049063, PE99913, PE99914]
- Korea Institute of Ocean Science and Technology (KIOST)
- Korea Institute of Marine Science & Technology Promotion (KIMST) [PE99914] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2021R1F1A1049063] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This study reports the discovery of three new species of genus Bicorniphontodes in Korean waters, and reconstructs their phylogenetic relationships through morphology analysis. The monophyletic status of the new species is supported by morphological characteristics and comparisons, allowing for easy differentiation of the species based on various features.
We report the occurrence of the genus Bicorniphontodes George, Glatzel & Schroder, 2019 in Korean waters, with descriptions of three new species: Bicorniphontodes lacuna sp. nov., B. comptus sp. nov., and B. huysi sp. nov. Morphology analysis was carried out to reconstruct the phylogenetic relationships of Bicorniphontodes species, including the three new species. Parsimony analysis based on 41 characters revealed that the three new species are clustered together as a monophyletic clade, of which B. horstgeorgei (George & Gheerardyn, 2015) is a sister species. The monophyletic status of three new species was supported by five synapomorphies, such as the micro-morphological conditions of the exopodal segments of the first leg, coxae of the second to fourth legs, exopod of the fifth leg in the female and baseoendopod of the fifth leg in the male, and the maxillular endopod represented by two setae. These three species can be easily distinguished based on the morphology of the rostrum, cephalothoracic processes, female genital double-somite, caudal rami, and second endopodal segment of the third leg in the male. The taxonomic position of B. bicornis sensu Kim, 2013 in Korean fauna was reevaluated based on the newly collected material from Udo Islet near Jeju Island; this resulted in a synonym of B. huysi sp. nov.
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