Gastrotricha from the Poznań Palm House — one new subgenus and three new species of freshwater Chaetonotida (Gastrotricha) Author Kolicka, Małgorzata Author Kisielewski, Jacek Author Nesteruk, Teresa Author Zawierucha, Krzysztof text Zootaxa 2013 3717 2 231 279 journal article 43015 10.11646/zootaxa.3717.2.7 b824315a-0c21-476b-8c94-23b322eef779 1175-5326 246596 27BD65FD-18CF-4E9D-AE77-C7C0137CF1DC

TABLE 7. Morphometric parameters for Chaetonotus (Chaetonotus) pravus sp. nov.; N—number of specimens or structures analysed, Range—the smallest and the largest structure found among all specimens measured, SD— standard deviation.

Width of anterior pharynx thickening (a) Width of pharynx narrowing that follows anterior thickening (n) Width of pharynx at its middle lengt (m) Width of posterior pharynx thickening (p) Length of cephalic cilia	19 18 19 19 24	7.2 7.2–8.7 0.42 4.8 4.7–6.7 0.48 6.0 5.7–7.3 0.61 9.2 8.3–10.3 0.49 10.1–19.2 (6.7–11.3)–(10.0–20.8) 1.07–2.33	1 1 1 1 2	6.4 4.2 5.4 8.0 (8.6–8.9)–(19.0–19.6)	– – – – 0.21–0.42
Hypostomium length	22	4.8 4.1–5.5 0.35	2	4.3–4.7	0.28
Cephalion length	23	4.8 4.8–6.4 0.48	2	4.2–6.0	1.27
Cephalion width	23	9.3 8.8–10.9 0.57	2	7.2–10.2	2.12
Diameter of mouth ring	25	4.9 4.4–5.4 2.92	2	4.6–4.9	0.21
Furca length	25	15.8 15.5–17.8 0.83	2	15.3	0.00
Length of adhesive tube	25	8.2 8.0–9.2 0.35	2	8.1–8.7	0.42
Lateral neck spine length	24	3.1–3.6 (2.7–3.5)–(3.6–4.6) 0.20–0.25	2	(3.0–3.2)–(4.2–4.5)	0.14–0.21
Lateral trunk spine length	24	3.6–5.7 (3.6–5.0)–(5.1–6.7) 0.31–0.54	2	(4.4–4.5)–(5.8–6.8)	0.07–0.71
Neck spine length	22	2.0–2.6 (1.6–2.2)–(2.2–2.9) 0.17–0.21	1	1.9–2.7	–
Trunk spine length	22	2.7–3.5 (2.3–3.0)–(3.2–4.3) 0.20–0.38	1	2.8–3.1	–
Length of last pair trunk spines	22	16.8 12.6–19.5 1.89	2	15.8–16.7	0.64
Length of posteriormost lateral pair of spines on the furca base Narrower neck scale length	22 21	11.7 11.1–16.3 1.59 2.5–3.0 (2.1–3.3)–(2.9–4.1) 0.29–0.39	2 1	11.3–11.6 2.1–2.7	0.21 –
Narrower neck scale width	21	1.1–1.7 (1.1–1.6)–(16–2.5) 0.15–0.23	1	1.2–1.6	–
Wider neck scale length	22	2.2–2.9 (1.6–2.3)–(2.5–3.3) 0.18–0.28	1	1.9–2.7	–
Wider neck scale width	22	1.6–2.2 (1.4–2.0)–(1.9–3.2) 0.16–0.32	1	1.5–2.1	–
Narrower trunk scale length	21	3.1–4.4 (3.1–4.3)–(4.2–5.9) 0.38–0.47	1	3.1–4.0	–
Narrower trunk scale width	21	1.7–1.9 (1.6–2.9)–(1.9–3.6) 0.29–0.40	1	1.7–1.9	–
Wider trunk scale length	21	3.1–4.1 (2.2–3.8)–(3.4–4.8) 0.34–0.36	1	2.8–3.2	–
Wider trunk scale width	21	2.4–3.5 (2.0–3.2)–(2.5–4.0) 0.32–0.40	1	2.2–2.6	–
Anterior sensory bristles length	14	9.6 9.3–13.4 1.44	1	8.4	–
Posterior sensory bristles length	17	10.7 9.2–15.3 1.82	1	9.2	–
Size matured egg	1	– 38.8 x 20.5 –	2	–	–
Number of cephalic cilia in one tuft Number of separated cephalic tufts	27 27	3 (anterior); 3 (anterior); 0.00 3 (posterior) 3 (posterior) 4 4 0.00	2 2	3 (anterior); 3 (posterior) 4	0.00 0.00
Number of scales in single longitudinal row Total number of longitudinal alternating rows of scales Pharynx formula a	27 27 18	20 20–26 1.58 24 22–26 1.32 29.1 27.4–32.4 0.02	2 2 1	20 22–24 26.1	0.00 1.41 –
Pharynx formula n	18	19.4 18.7–23.9 0.02	1	17.1	–
Pharynx formula m	18	24.3 21.6–27.9 0.02	1	22.0	–
Pharynx formula p	18	37.2 33.9–37.8 0.02	1	32.6	–
Ratio of scale distribution	27	120.0 92.3–130.0 0.09	2	110.0–120.0	0.07
Length ratio of terminal spines	22	11.8 10.0–15.6 0.01	2	11.9–12.9	0.01