Table 2 Comparisons of measurements and distances of specific structures and organs to the anterior tip of different species of Lobatocerebridae
Lobatocerebrum psammicola live | L. psammicola fixed | Lobatocerebrum sp. 1 | Lobatocerebrum sp. 2 | Lobatocerebrum riegeri | L. riegeri conclusions/remarks | |
|---|---|---|---|---|---|---|
Total length [mm] | 3.0 | 2.0–2.2 | 1.1 | 1.7 | 1.57 (1.08–1.6 [0.48]) | L. riegeri is shorter than L. psammicola and the other reported specimens |
Total width [mm] | 0.11 | 0.07–0.08 | 0.06 | 0.06 | 0.04 (0.04–0.06 [0.07]) | L. riegeri is thinner than the other species and reported specimens, though not relative to the body length |
Relative width | 0.036 | 0.035–0.036 | 0.055 | 0.035 | 0.025 (0.025–0.038 [0.15]) | L. riegeri is thinner than the other species and reported specimens, though not relative to the body length |
Position of the neuropile [1–100U] | 9 | 7–12 | 14 | 12 | 18.18 (8.22–18.18 [27.61]) | →displaced more posteriorly in L. riegeri than in L. psammicola and the other reported specimens |
Position of the brain [1–100U] | 9 | 7–12 | 14 | 12 | 15.65 (12.7–20.5 [28.8]) | |
Position of the mouth [1–100U] | 14 | 10–17 | 20 | 20 | 20.48 (20.48–34.69 [38.14]) | →displaced more posteriorly in L. riegeri than in L. psammicola, but in the same range as the other reported species |
Position of the male gonopore [1–100U] | 38 | 30–36 | No measurements provided | 31 | 37.72 (34.68–44.16) | → range outside L. sp. 2, but similar to L. psammicola |
Position of the testis [1–100U] | 47–57 | 46–56 | No measurements provided | 35–43 | 48.21 (44.33–53.48) | → posterior to L. sp.2, but with the broad range similar to L. psammicola |
Position of the ovary [1–100U] | 58–63 | No measurements provided | 48–79 | 70.42 (65.17–70.42) | → too broad ranged to be diagnostic | |
Position of the seminal receptacles [1–100U] | 90,5 | 87–89 | No measurements provided | 88 | 90.84 (84.06–90.84) | → too broad ranged to be diagnostic |