Figure 3

Biometrical separation between central European water frogs. Projections of characters 2 and 8 (A), (B).Abbreviations: L, P. lessonae; R, P. ridibundus; LE, P. kl. P. esculentus within the lessonae-esculentus system; RE, P. kl. P. esculentus within the ridibundus-esculentus system. Measurements (in ordinate) and angle (in abscissa) are respectively in millimetres and in sexigesimal degree.