Fig. 2 in The colonisation of the Tyrrhenian Islands by Hydraena water beetles, with Hydraena reflexa Rey, 1884 reinstated as a valid species endemic to Corsica and Sardinia (Coleoptera, Hydraenidae)

Fig. 2 COI variation in the Hydraena minutissima group. A) Haplotype network for sequenced specimens of the group. Empty circles indicate mutational steps between haplotypes, inset male H. pygmaea; B) approximate position of land masses in the Western Mediterranean during the Miocene, ca. 6 Ma. (modified after Rosenbaum et al. (2002b)). Corsica-Sardinia green, Calabrian block red, shelf light blue. Note that during the Messinian Salinity Crisis, much of the basin was dry