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As one of the most distinct groups in the hoverfly genus Merodon, the   monophyletic ruficornis species group has been the focus of several studies   using different approaches. Molecular methods have shown incongruences   between morphological and molecular data. In the present study, we   investigated four species of the Merodon ruficornis group (i.e. M. loewi, M.   armipes, M. papillus and M. hoplitis) with the aim of detecting intra- and   interspecific genetic diversity, and we examined the usefulness of random   amplified polymorphic DNA (RAPD) in an integrative taxonomic approach to   species delimitation. Analysis of Nei’s genetic variation over all loci   showed that genetic diversity for the analyzed Merodon species was h=0.24.   Based on UPGMA, PCoA and Bayesian clustering analyses, our results clearly   differentiated four groups that correspond to the four   morphologically-defined Merodon species. Among the analyzed species, M.   armipes and M. hoplitis showed the lowest level of genetic divergence; M.   loewi was clearly separated from both M. armipes and M. papillus. Based on   our data, we propose the use of RAPD-PCR as an additional tool for resolving   taxonomic problems within Merodon. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no.173002

Assessment of genetic diversity within the Merodon ruficornis species group (Diptera: Syrphidae) by RAPD analysis