Leuciscus souffia Risso, 1826

Schulz-Mirbach, Tanja & Reichenbacher, Bettina, 2006, Reconstruction of Oligocene and Neogene freshwater fish faunas-an actualistic study on cypriniform otoliths, Acta Palaeontologica Polonica 51 (2), pp. 283-304 : 293

Leuciscus souffia Risso, 1826

Fig. 15L–O .

Material and dimensions.—See Table 2.

Description.—The general shape of the four investigated Leuciscus species is ovate to rectangular with a steeply dropping posterior margin. The regular shape is generated by the medial and lateral margins that run bilaterally symmetrical to each other and by the vertical posterior margin. In all species, the edges are generally well developed.

Remarks.—The lapilli of L. idus differ from the three other Leuciscus species because of their pointed, strongly marked anterolateral edge, whereas the anteromedial edge is only weakly developed.

Figures

Fig. 15. Utricular otoliths (lapilli) of Recent Leuciscus from wild catches in Germany. A–G. L. cephalus (Linnaeus, 1758), BSPG 2003 IV 72, 68, 74b, 65, 74a, 69, and 71 respectively, in dorsal (A–C, D1, F, G), anterior (D2), and ventral (E) views. All lapilli, except E, are represented as right ones (A–C, F, are mirrored). E is represented as left lapillus (mirrored). C, E display a lapilli pair. H–K. L. leuciscus (Linnaeus, 1758), BSPG 2003 IV 81, 82, 80, and 84 respectively, in dorsal (H1, K), anterior (H2), and ventral (I, J) views. H1 and K are represented as right lapilli (mirrored). H2, I, and J are represented as left lapilli. L–O. L. souffia Risso, 1826, BSPG 2003 IV 87b, 87a, 89, and 90 respectively, in dorsal (L1, N, O), anterior (L2), and ventral (M) views. L1, N, and O are represented as right lapilli (L is mirrored). L2 and M are represented as left lapilli (M is mirrored). L, M display a lapilli pair. P–R. L. idus (Linnaeus, 1758), BSPG 2003 IV 75, 76, and 77 respectively, in dorsal (P, R1), anterior (R2), and ventral (Q) views. P and R are represented as right lapilli. Q is represented as left lapillus. SEM−pictures (D, E, G–I, L, M, P–R), digital pictures (A–C, F, J, K, N, O).