TABLE 2 in Diversification in ancient Lake Biwa: integrative taxonomy reveals overlooked species diversity of the Japanese freshwater snail genus Semisulcospira (Mollusca: Semisulcospiridae)

TABLE 2 Morphometric characters of five Semisulcospira species examined in the present study. Measurements and counts: minimum–maximum value (mean ± SD)
CharactersS. niponicaS. fuscataS. watanabeiS. nakanoiS. salebrosasp. nov.sp. nov.sp. nov.FemaleAperture height (AH)7.7–12.68.4–11.76.9–11.89.6–12.311.4–14.8(10.2 ± 0.9)(10.3 ± 1.0)(9.5 ± 0.9)(11.1 ± 0.8)(13.2 ± 1.0)Aperture length (AL)8.3–12.98.5–12.17.7–11.910.1–13.511.7–15.6(10.8 ± 1.0)(10.6 ± 0.9)(10.0 ± 0.8)(11.8 ± 0.9)(13.7 ± 1.0)Aperture swell legth0–0.140–0.120–0.230.11–0.310.27–0.82(ASL)(0.06 ± 0.04)(0.04 ± 0.04)(0.06 ± 0.05)(0.20 ± 0.05)(0.44 ± 0.12)Aperture slenderness1.34–1.841.63–1.911.52–1.951.32–1.741.47–1.90ratio (ASR)(1.6 ± 0.1)(1.8 ± 0.1)(1.7 ± 0.1)(1.6 ± 0.1)(1.6 ± 0.1)Aperture width (AW)5.0–8.25.0–6.94.7–7.16.0–8.66.7–10.2(6.6 ± 0.7)(6.0 ± 0.5)(5.9 ± 0.5)(7.4 ± 0.7)(8.5 ± 0.9)Basal cord number2–5 (3.3 ± 1.0)2–6 (3.9 ± 1.0)2–4 (2.8 ± 0.8)2–3 (2.5 ± 0.5)2–5 (2.5 ± 0.7)(BCN)Body whorl length12.9–21.213.9–19.411.9–19.315.9–21.619.3–24.4(BWL)(17.3 ± 1.6)(17.1 ± 1.7)(15.9 ± 1.3)(18.9 ± 1.3)(21.9 ± 1.5)Fourth whorl length2.4–5.22.4–4.82.3–4.62.7–4.63.8–5.3(FWL)(3.5 ± 0.5)(3.6 ± 0.6)(3.5 ± 0.5)(3.9 ± 0.4)(4.4 ± 0.4)Penultimate whorl4.4–8.24.9–7.54.4–7.45.5–8 (7.0 ± 0.5)7.1–9.0length (PWL)(6.3 ± 0.8)(6.2 ± 0.8)(5.7 ± 0.6)(7.9 ± 0.5)Longitudinal rib num-9–20 (13.1 ± 2.1)9–18 (13.8 ± 3.0)7–16 (11.1 ± 1.8)8–14 (11.3 ± 1.3)8–14 (11.1 ± 1.6)ber ofpenultimate whorl(RN)Spire angle (SA)16.5–28.915.6–24.716.7–28.417.2–26.717.0–27.7(23.2 ± 2.7)(19.2 ± 2.1)(21.1 ± 2.7)(21.5 ± 2.6)(21.2 ± 2.5)Spiral cord number3–6 (4.2 ± 0.8)4–7 (5.0 ± 0.8)4–6 (4.6 ± 0.6)3–5 (3.7 ± 0.6)3–6 (3.4 ± 0.7)of penultimate whorl(SCN)Shell height (SH)21.6–36.421.1–35.020.1–37.024.0–35.732.2–39.8(27.7 ± 2.9)(29.3 ± 3.9)(26.8 ± 3.0)(30.6 ± 2.7)(35.7 ± 2.0)Shell width (SW)9.1–14.79.1–12.18.2–12.811.1–15.712.8–18.2(12.0 ± 1.2)(10.7 ± 0.8)(10.6 ± 0.9)(13.5 ± 1.2)(15.3 ± 1.2)Third whorl length3.7–6.43.7–5.83.5–6.04.6–6.55.3–7.3(TWL)(4.8 ± 0.5)(4.8 ± 0.5)(4.5 ± 0.5)(5.5 ± 0.4)(6.2 ± 0.5)Whorl elongation2.15–3.562.31–3.642.30–3.412.47–3.552.52–3.55ratio (WER)(2.9 ± 0.3)(2.9 ± 0.3)(2.8 ± 0.2)(2.9 ± 0.2)(3.0 ± 0.3)Whorl number (WN)3.00–6.254.00–6.003.25–6.003.50–5.253.25–6.25(4.3 ± 0.6)(4.9 ± 0.6)(4.7 ± 0.7)(4.2 ± 0.5)(4.4 ± 0.6)Sculpture type88% / 12% /8% / 49% /19% / 81% / 0%100% / 0% / 0%100% / 0% /(node / rib / smooth)0%43%0%Number of embryos2–14517–8221–9010–6615–68(EN)(50.0 ± 27.4)(48.3 ± 20.4)(49.0 ± 22.2)(34.4 ± 17.2)(32.0 ± 13.0)