Fig. 2.

Cluster analyses based on chemical profiles of individual extracts, using Euclidean distances (a), Ward’s method (b) and the Gower coefficient (c). Sample numbers just refer to intern labelling of extracts but also pinpoint the clustering behaviour of samples of different populations within the regarding species (see Table 1). In a and b, extracts of Oribotritia hermanni and O. storkani were not well separable (samples of O. storkani are marked with an asterisk). In a and b, dissimilarity is expressed in %, in c relative to 1 (= 100% similarity). See text for further details. Abbreviations: O.ba (Oribotritia banksi), O.be (Oribotritia berlesei), O.h (Oribotritia hermanni), O.s (Oribotritia storkani)