Table 6 Means with standard deviations and ranges of putative new morphometric characters for phenotypic species delimitation in Richtersius tested in this study

R. coronifer s.s. (NO.385)

mean ± SD

74 ± 7

1.2 ± 0.2

11 ± 1

10 ± 1

10 ± 2

11 ± 1

73.6 ± 1.2%

49.6 ± 4.4%

range

60–88

0.7–1.6

9–11

8–12

9–13

10–11

72.2–75.6%

42.5–55.7%

Richtersius sp. 4 (IT.120)

mean ± SD

10 ± 2

2.1 ± 0.3

14 ± 2

13 ± 1

18 ± 3

16 ± 1

68.7 ± 1.3%

61.8 ± 3.4%

range

6–13

1.3–3.0

12–17

11–15

14–22

14–19

66.8–70.8%

57.7–68.4%

Richtersius sp. 7 (GR.008)

mean ± SD

6 ± 2

2.9 ± 0.6

13 ± 1

12 ± 1

12 ± 2

13 ± 1

64.7 ± 1.3%

56.3 ± 4.6%

range

4–10

1.6–4.2

11–14

10–15

9–15

11–15

63.3–66.4%

46.8–65.8%