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. 2024 Apr 30;12:e17355. doi: 10.7717/peerj.17355

Table 4. Morphometric data of Microlaimus modestus sp. n.

Microlaimus modestus sp. n. Holotype male Paratype male 1 Females paratypes
Body length 342 344 331.5–359
Cephalic setae length 2 2 2
Head diameter at level of the cephalic setae 9 9 8–9
Cephalic setae in relation to head diameter (%) 22% 22% 22–25%
Distance from anterior end to amphidial fovea 10 11 10–12
Distance from anterior end to amphidial fovea in relation to head diameter 1.1 1.2 1.1–1.5
Amphidial fovea diameter (maximum width) 6 6 5–6
Body diameter at level of the amphidial fovea 10.5 11 10
% of the amphidial fovea diameter in relation to corresponding body diameter 57% 55% 50–60%
Pharynx length 82 82 78–85.5
Position of nerve ring from anterior end 51 48 47–49
Nerve ring position in relation to pharynx length (%) 62% 59% 57%–63%
Pharyngeal bulb diameter 15 17 13–17
Body diameter at level of the pharyngeal bulb 17 19 18–21
% of basal bulb diameter in relation to corresponding body diameter 88% 89% 65–84%
Position of secretory-excretory pore from anterior end 56 56 53
Maximum body diameter 20 20 22–29.5
Anal or cloacal body diameter 15 16 13–16
Tail lenth 48 54 35–57
Length of spicule along arc 34 32 *
Length of spicule along cord 20 22 *
Length of gubernaculum 19 16 *
Length of gubernaculum in relation to length of spicule along arc (%) 56% 50% *
Length of spicule along arc in relation to cloacal body diameter 2.3 2.0 *
Distance from anterior end to vulva * * 195–207
Position of vulva from anterior end (%) * * 57–59%
Body diameter in vulva region * * 22–29
Anterior ovary length * * 49–65
Posterior ovary length * * 52.5–65
Reproductive system length 163 158 107.5–130
% of reproductive system in relation to body length 48% 46% 31–37%
a 17 17 12–16
b 4 4 4.1–4.4
c 7 6 6–9
c′ 3 3 3–4

Note:

The measurements are expressed in micrometers, or if noted, as a percentage or ratio. Not applicable (*); a, b, c, c′ = de Man’s (1880) ratios.