Table 4 Morphological measurements of Gyrodactylus tomahuac n. sp. from Goodea atripinnis Jordan collected in Mexico
Measurement | G. tomahuac n. sp. RÃo Pánuco basin, type-locality (n = 9) | G. tomahuac n. sp. RÃo Lerma basin (n = 6) | ||
|---|---|---|---|---|
| Â | Range | Mean | Range | Mean |
Hamulus | ||||
 Total length | 42.2–46.4 | 44.9 | 44.5–48.3 | 46.4 |
 Shaft length | 24.9–26.4 | 25.6 | 26.3–28.9 | 27.3 |
 Point length | 22.3–24.5 | 23.5 | 24.9–27.1 | 26.2 |
 Root length | 17.8–21.5 | 19.3 | 18.8–22.5 | 20.0 |
 Proximal shaft width | 6.6–8.5 | 7.8 | 8.3–8.8 | 8.5 |
 Aperture angle (o) | 25.5–36.1 | 30.0 | 28.0–31.1 | 29.8 |
 Aperture distance | 10.9–15.0 | 12.6 | 12.9–14.3 | 13.3 |
 Distal shaft width | 4.0–5.1 | 4.4 | 4.3–5.1 | 4.7 |
Ventral bar | ||||
 Total length | 15.6–21.0 | 18.5 | 16.6–20.9 | 19.2 |
 Total width | 18.4–21.9 | 20.5 | 21.5–23.0 | 22.2 |
 Process-to-mid length | 2.0–3.5 | 2.8 | 2.2–4.0 | 2.9 |
 Median length | 4.7–5.9 | 5.4 | 5.4–6.1 | 5.8 |
 Process length | 1.6–2.5 | 2.0 | 0.9–3.3 | 1.8 |
 Membrane length | 9.2–14.4 | 10.7 | 10.0–12.2 | 11.0 |
Dorsal bar | ||||
 Total length | 18.7–21.6 | 20.2 | 17.9–22.0 | 20.1 |
 Width | 1.8–2.3 | 2.0 | 1.6–2.4 | 2.0 |
Marginal hook | ||||
 Total length | 29.5–31.7 | 31.0 | 29.6–31.1 | 30.3 |
 Shaft length | 24.0–26.7 | 25.9 | 25.1–27.0 | 25.9 |
 Sickle length | 5.2–5.8 | 5.5 | 4.8–6.1 | 5.4 |
 Sickle proximal width | 3.7–4.4 | 4.0 | 3.5–4.3 | 3.9 |
 Toe length | 1.2–1.8 | 1.6 | 1.6–1.9 | 1.7 |
 Sickle distal width | 2.0–2.7 | 2.3 | 2.0–2.8 | 2.4 |
 Aperture | 4.5–5.3 | 4.9 | 4.6–5.2 | 4.9 |
 Instep/arch height | 0.4–0.8 | 0.6 | 0.4–1.0 | 0.7 |