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 21. Measurements from light microscopy of Echinoderes aff. beringiensis / romanoi / xalkutaat (in µm) from the Antarctic Peninsula, including number of measured specimens (n) and standard deviation (SD), and comparative measurements of types of E. beringiensis Adrianov & Maiorova, 2022, E. romanoi Landers & Sørensen, 2016, and E. xalkutaat Cepeda et al., 2019.

	E. aff. ber . / rom. / xal.				E. beringiensis				E. romanoi				E. xalkutaat
Character	n	Range	Mean	SD	n	Range	Mean	SD	n	Range	Mean	SD	n	Range	Mean	SD
TL	5	271–313	300	16.73	6	269–390	337	49.79	5	201–245	233	18.23	3	282–304	290	11.6
TL (CUM)	5	396–422	408	10.35	5	371–480	441	43.40	5	293–323	306	11.30	0	–	–	–
MSW-7	5	47–56	51	1.51	6	48–68	59	7.12	5	37–40	38	1.14	2	48–49	49	0.4
MSW-7/TL	5	16.2–17.9%	17.1%	0.60%	6	15.2–20.4%	17.5%	1.85%	5	15.1–18.9%	16.5%	1.44%	2	17.1–17.2%	17.1%	0.0%
SW-10	5	40–45	42	2.07	6	40–47	44	2.48	5	32–35	34	1.10	2	40	40	0.1
SW-10/TL	5	13.6–14.8%	14.1%	0.48%	6	11.7–16.1%	13.3%	1.80%	5	13.1–16.9%	14.6%	1.42%	2	13.9–14.1%	14.0%	0.1%
–
S1	5	29–32	31	1.52	6	31–40	36	3.87	5	21–22	22	0.45	3	26–30	28	1.7
S2	5	29–30	30	0.45	6	27–35	31	3.22	5	23–26	24	1.30	3	26–33	30	3.2
S3	5	30–33	31	1.30	5	27–38	33	4.53	5	23–27	25	1.64	3	30–34	33	1.5
S4	5	31–35	32	1.67	5	33–40	37	3.29	5	24–26	25	0.89	3	29–33	32	2.1
S5	5	34–40	37	2.59	6	36–53	45	6.80	5	26–30	27	1.67	3	31–37	35	2.9
S6	5	38–41	40	1.41	6	32–52	45	7.43	5	27–30	29	1.14	3	35–41	38	3.0
S7	5	41–45	43	1.79	6	37–54	48	6.59	5	29–33	31	1.64	3	40–42	41	1.3
S8	5	44–48	46	1.48	6	40–56	50	6.02	5	31–33	32	0.89	3	45–47	45	1.3
S9	5	41–46	44	2.05	6	36–52	47	5.98	5	31–33	32	0.84	3	41–45	43	2.1
S10	5	40–48	43	3.27	6	35–46	42	4.68	5	30–33	32	1.52	3	35–37	35	1.2
S11	5	28–33	31	1.87	6	29–41	36	4.81	5	25–31	27	2.28	3	24–32	29	4.2
–
MD4 (ac)	5	40–57	47	7.06	5	40–56	46	6.38	5	28–33	30	1.92	2	42–44	43	1.7
MD5 (ac)	5	52–65	57	6.30	5	45–56	53	4.53	4	39–44	43	2.28	1	56	N/A	N/A
MD6 (ac)	5	60–77	66	7.33	6	58–71	66	4.49	5	45–55	49	4.16	3	65–75	69	5.1
MD7 (ac)	5	62–83	70	8.85	5	45–81	68	13.81	4	52–58	55	2.94	3	70–72	71	0.6
MD8 (ac)	4	80–91	84	4.79	6	62–86	81	9.33	5	56–70	63	5.22	3	77–84	80	3.8
–
LV/LA5 (tu)	3	12–14	13	1.15	2	16–20	18	2.83	–	–	–	–	3	8–10	9	1.2
LV6 (ac)	5	36–44	39	3.32	6	37–50	41	4.76	5	20–23	22	1.14	3	28–38	34	5.2
LV7 (ac)	5	41–48	43	2.79	6	34–46	42	4.50	5	22–28	25	2.19	2	42–43	43	0.8
LV8 (ac)	5	45–50	48	2.12	5	45–53	48	3.63	5	25–29	27	1.48	3	45–47	47	1.1
LV9 (ac)	5	40–49	44	3.91	4	35–47	39	5.32	4	24–32	27	3.70	3	32–39	35	3.7
–
LTS	5	177–205	190	10.18	6	123–168	150	18.36	5	138–161	145	9.53	3	171–178	176	4.0
LTS/TL	5	57.3–70.8%	63.6%	5.03%	6	36.4–62.5%	45.3%	9.09%	5	57.5–69.7%	62.5%	5.50%	3	58.9–63.0%	60.6%	2.1%
LTAS	4	42–119	75	37.97	3	70–85	80	8.39	4	51–77	65	12.52	3	50–56	53	3.0