Antarctic Kinorhyncha: Seven new species from the Antarctic Peninsula Author Sørensen, Martin V. 4143D650-12FC-4914-93F5-2C39339A7156 Natural History Museum of Denmark, University of Copenhagen, 2100 Copenhagen, Denmark. mvsorensen@snm.ku.dk Author Macheriotou, Lara 1037C143-8562-41A3-8149-BC3DE4323845 Marine Biology Research Group, Department of Biology, Ghent University, 9000 Ghent, Belgium. lara.macheriotou@ugent.be Author Braeckman, Ulrike 6C48F169-ECC8-4F98-A9CF-9B2A664DA903 Marine Biology Research Group, Department of Biology, Ghent University, 9000 Ghent, Belgium. Ulrike.Braeckman@ugent.be Author Smith, Craig R. F004E0AC-049A-48D6-9369-EBE18ECEF53C Department of Oceanography, University of Hawai’i at Mānoa, Honolulu HI 96822, Hawaii, USA. craigsmi@hawaii.edu Author Ingels, Jeroen F6107F36-C67F-4CB8-A6C0-DFBF66D3C464 Coastal and Marine Laboratory, Florida State University, St. Teresa FL 32346, Florida, USA. & National Institute for Water and Atmospheric Research, Wellington 6021, New Zealand. jeroen.ingels@niwa.co.nz text European Journal of Taxonomy 2025 2025-07-01 1000 1 1 102 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2947/13307 journal article 310863 10.5852/ejt.2025.1000.2947 7b56d2d4-1394-4a8a-9448-547bd293786d 2118-9773 15808384 98563124-EFCC-4542-B5AB-E14C0C3978DD

Table 23. Comparative table showing potential differential character traits between highly similar species, including Echinoderes aff. beringiensis / galadrielae from New Zealand (Grzelak & Sørensen 2022), as well as E. aff. beringiensis / romanoi / xalkutaat and E. aff. angustus Higgins & Kristensen, 1988 from Antarctica (present study). Potential differential character traits are in boldface.

Character	E. aff. beringiensis / romanoi / xalkutaat	E. beringiensis	E. aff. beringiensis / galadrielae	E. romanoi	E. xalkutaat	E. aff. angustus
S1 VM sensory spot	present	present	absent	present	VL	present
S4 SD GCO2	absent	absent	absent	absent	absent	present
S5 tubes	LV	LA	LA	LV	LV	LV
S8 lateral GCO2	SL GCO2	ML(♀) +SLGCO2	SL GCO2	SL GCO2	SL GCO2	SL GCO2
S10 LD GCO2	present	present	present	present	present	present
S11 MD protuberance	present	present	absent	absent	?	present
S11 midtergal fissure	present	present	present	present	?	present
TL range	271–313 µm	269–390 µm	196–211 µm	196–247 µm	282–304 µm	310–347 µm
LTS range	177–205 µm	123–168 µm	181–254 µm	127–232 µm	171–178 µm	197–214 µm