Re-evaluation of the systematic position of the order Prostomatida (Protista: Ciliophora), with the establishment of two new genera and two new species Author Jiang, Limin College of Fisheries & Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China Author Wang, Congcong College of Fisheries & Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China Author Liao, Lijian College of Fisheries & Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China Author Al-Farraj, Saleh A. Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia Author Warren, Alan Department of Life Sciences, Natural History Museum, London, UK Author Hu, Xiaozhong College of Fisheries & Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China xiaozhonghu@ouc.edu.cn text Zoological Journal of the Linnean Society 2024 2023-09-28 200 4 849 864 http://dx.doi.org/10.1093/zoolinnean/zlad116 journal article 296743 10.1093/zoolinnean/zlad116 c832bccc-5655-478f-b7f7-b6fbee8a192a 0024-4082 11241025 8E04CA83-16B0-4A9F-80B0-267704C75165C

Table 2. Morphometric data on Qingdao population of Apsiktrata gracilis after protargol staining (measurements are in micrometres).

Characteristic	Minimum	Maximum	Median	Mean	SD	CV	N
Abbreviations:CV, coefficient of variation (as a percentage); Mean,arithmetic mean; N, number of specimens examined.
Body length	40	60	49	50.0	5.5	10.9	21
Body width	18	26	22	21.8	2.1	9.7	21
Ratio of body length to body width	2	3	2	2.3	0.3	12.2	21
Macronucleus length	9	13	11	10.9	1.4	12.8	21
Macronucleus width	8	11	10	9.5	1.1	11.0	21
Ratio of macronucleus length to macronucleus width	1.0	1.3	1.1	1.2	0.1	7.8	21
Anterior body end to macronucleus, distance	9	29	18	17.8	6.6	37.1	21
Somatic kineties, number	19	25	22	21.9	1.7	7.6	21
Transverse rings, number	7	9	8	8.1	0.6	7.9	13
Oral basket length	10	14	12	12.1	1.2	10.2	21
Oral basket width	2	4	3	3.4	0.3	8.1	21
Ratio of oral basket length to oral basket width	3	4	3.5	3.5	0.3	8.9	21