Two new nematode species of the family Sphaerolaimidae (Nematoda, Monhysterida) from the Yellow Sea, China
Author
Zhai, Hongxiu
0000-0003-0003-9549
College of Agriculture and Biology, Liaocheng University, Liaocheng 252059, China
zhaihongxiu@lcu.edu.cn
Author
Liu, Lin
0009-0005-7503-6942
College of Agriculture and Biology, Liaocheng University, Liaocheng 252059, China
linliu906@163.com
Author
Huang, Mian
0000-0003-3343-1520
College of Agriculture and Biology, Liaocheng University, Liaocheng 252059, China
huangmian@lcu.edu.cn
text
Zootaxa
2025
2025-05-02
5631
2
335
348
https://doi.org/10.11646/zootaxa.5631.2.6
journal article
309765
10.11646/zootaxa.5631.2.6
a75a96e7-cc9c-4377-a053-fed741d15fa9
1175-5326
15370660
74C1AD78-BC08-4450-9A76-7AE5EBA9AB66
TABLE 2. Individual measurements of Parasphaerolaimus sinensis sp. nov. (in µm except a, b, c, c′ and V%) Abbreviations: a, ratio of body length to maximum body diameter; b, ratio of body length to pharynx length; c, ratio of body length to tail length; c’, ratio of tail length to cloacal or anus body diameter; V%, position of vulva from anterior end expressed as a percentage of total body length; -, no data.| Characters | Holotype | Paratypes |
|---|
| M1 | M2 | M3 | F1 | F2 | F3 |
|---|
| Total body length including tail | 1256 | 1250 | 1212 | 2067 | 2148 | 1650 |
|---|
| Maximum body diameter | 63 | 59 | 62 | 98 | 115 | 70 |
|---|
| Head diameter | 30 | 29 | 29 | 30 | 32 | 26 |
|---|
| Length of outer labial setae | 4 | 5 | 5 | 4 | 4 | - |
|---|
| Length of cephalic setae | 6 | 6 | 7 | 4 | 4 | 3 |
|---|
| Length of longest subcephalic setae | 22 | 20 | 19 | 6 | 7 | 6 |
|---|
| Depth of buccal cavity | 30 | 30 | 32 | 34 | 34 | 33 |
|---|
| Diameter of amphidial fovea | 15 | 15 | 17 | 6 | 6 | 6 |
|---|
| Amphidial fovea diameter as | 36 | 33 | 40 | | 11 | 13 |
|---|
| percentage of corresponding body diameter | | | | 12 | | |
|---|
| Amphidial fovea from anterior end | 25 | 27 | 26 | 30 | 36 | 35 |
|---|
| Nerve ring from anterior end | 110 | 126 | - | 159 | | 134 |
|---|
| Excretory pore from anterior end | 138 | 132 | 144 | 220 | 232 | 196 |
|---|
| Length of pharynx | 283 | 320 | 322 | 415 | 434 | 343 |
|---|
| Body diameter at pharyngeal base | 58 | 59 | 57 | 84 | 104 | 67 |
|---|
| Spicules length | 74 | 63 | 68 | - | - | - |
|---|
| Length of gubernaculum | 12 | 10 | 10 | - | - | - |
|---|
| Vulva from anterior end | - | - | - | 1725 | 1812 | 1430 |
|---|
| Body diameter at vulva | - | - | - | 80 | 97 | 58 |
|---|
| V% | - | - | - | 84 | 84 | 87 |
|---|
| Body diameter at cloaca or anus | 42 | 47 | 42 | 56 | 70 | 43 |
|---|
| Tail length | 148 | 149 | 152 | 225 | 225 | 185 |
|---|
| a | 19.9 | 21.2 | 21.3 | 21.1 | 18.7 | 23.6 |
|---|
| b | 4.4 | 3.9 | 3.8 | 5.0 | 4.9 | 4.8 |
|---|
| c | 8.5 | 8.4 | 8.0 | 9.9 | 9.5 | 8.9 |
|---|
| c′ | 3.5 | 3.2 | 3.6 | 4.0 | 3.2 | 4.3 |
|---|