Table 3 Spermatophore number and measurements in Muusoctopus aegir Golikov, Gudmundsson & Sabirov, sp. nov. and M. sibiricus (Løyning, 1930) [62]. Values are minimum – maximum (mean ± SE), where applicable

# spermatophores

5–22 (12.5 ± 2.4);

7–22 (15.0 ± 2.3) excluding V₁ males

49 (V₂), 52 (V₃)

SL

mm

27.9–48.0 (39.8 ± 0.5)

46.3–63.5 (57.9 ± 1.1)

% ML

78.0–135.9 (108.1 ± 1.8)

118.7–167.1 (150.6 ± 3.3)

Spermatophore W

mm

0.8–1.4 (1.2 ± 0.04)

0.6–0.8 (0.7 ± 0.03)

% ML

2.8–3.8 (3.1 ± 0.1)

1.1–1.3 (1.2 ± 0.03)

Head L

mm

0.7–2.6 (1.5 ± 0.1)

0.8–1.3 (1.1 ± 0.1)

% SL

2.4–6.7 (4.0 ± 0.3)

1.3–2.8 (1.9 ± 0.3)

Ejaculatory apparatus L

mm

14.0–26.2 (19.4 ± 0.7)

26.3–38.2 (32.6 ± 2.5)

% SL

44.1–58.1 (52.5 ± 0.9)

49.6–61.6 (57.0 ± 2.2)

Cement body L

mm

2.5–7.6 (4.3 ± 0.3)

5.5–6.8 (6.3 ± 0.2)

% SL

6.7–21.5 (11.7 ± 0.8)

10.4–14.7 (11.2 ± 0.7)

Seminal reservoir L

mm

9.2–15.4 (11.6 ± 0.4)

11.8–21.0 (16.7 ± 1.3)

% SL

26.1–36.4 (31.4 ± 0.6)

25.5–37.4 (29.5 ± 2.3)

Seminal reservoir W

mm

0.7–1.3 (1.1 ± 0.04)

0.55–0.70 (0.63 ± 0.03)

% SL

2.5–3.5 (2.9 ± 0.1)

1.0–1.2 (1.1 ± 0.03)

Seminal reservoir volume, mm³

3.6–20.4 (10.9 ± 1.0)

2.8–6.2 (5.2 ± 0.6)

# of sperm cord whorls

65–98 (77.2 ± 2.7)

59–92 (79.2 ± 5.8)

Sperm cord W, mm

0.10–0.20 (0.16 ± 0.01)

0.15–0.20 (0.19 ± 0.01)

Posterior hollow part

mm

0.1–0.2 (0.11 ± 0.1)

0.1–0.3 (0.2 ± 0.04)

% SL

0.2–0.5 (0.3 ± 0.02)

0.2–0.5 (0.3 ± 0.1)