| Abstrakt: |
The molecular phylogeny of the subfamily Dolichopodinae (Diptera:Dolichopodidae) is reconstructed based on 79 species of 7 dolichopodine genera as ingroup, and 10 non-dolichopodine species from different genera as outgroup. A Bayesian analysis based on a mitochondrial DNA dataset consisting of 1702 characters (COI:810; 12S:366; 16S:526) was carried out. Genital and non-genital morphological characters from a hitherto unpublished data matrix (based on 57 Dolichopodidae species) were used to explain and support the lineages hypothesised by our molecular phylogenetic analysis. The monophyly of the subfamily Dolichopodinae, and of the genera Dolichopusand Gymnopternus, was confirmed. The molecular analysis yielded nine species groups in Dolichopusthat were proposed in previous studies using COI and Cyt-b. No evidence was found to support a clade including Dolichopus, Ethiromyia, and Gymnopternus. The genus Hercostomusproved polyphyletic with respect to Poecilobothrus, Sybistroma, and Gymnopternus. The following lineages were represented by strongly supported clades: Hercostomus germanusspecies group, H. vivaxspecies group, H. nigrilamellatusspecies group, H. plagiatusspecies group, H. longiventrisspecies group, H. fulvicaudisspecies group, and Poecilobothrus, Gymnopternus, Tachytrechusand Sybistroma(including Hercostomus nanusand H. parvilamellatus). Two clades that were previously established on the basis of morphology were confirmed in our phylogenetic analysis: (i) Poecilobothrusand the flower-feeding Hercostomus germanusspecies group, and (ii) the H. longiventrislineage and Sybistroma. In most cases, the groups identified in the molecular analysis could be supported and explained by morphological characters. Species of the Hercostomus germanusspecies group, Poecilobothrus, the Hercostomus longiventrisspecies group, and a Sybistromasubclade have a similar microhabitat affinity. [ABSTRACT FROM AUTHOR] |
