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1 December 2011 Phylogenetic Analyses using Molecular Markers Reveal Ecological Lineages in Medetera (Diptera: Dolichopodidae)
Marc Pollet, Christoph Germann, Marco Valerio Bernasconi
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Medetera Fischer von Waldheim is the most speciose genus in the Medeterinae, with a nearly ubiquitous global distribution. Phylogenetic relationships within Medetera and between Medetera and four other medeterine genera were investigated using mitochondrial (COI, 16S) and nuclear (18S) markers to test morphological hypotheses. Our results confirm most of Bickel's hypotheses. Thrypticus Gerstäcker shows a sister-group relationship with Medetera Dolichophorus Lichtwardt. The Medetera species included here split into two clades. One clade corresponds to the M. diadema L. — veles Loew species group sensu Bickel. The second clade is largely composed of the M. apicalis (Zetterstedt) species group sensu Bickel and the M. aberrans Wheeler species group sensu Bickel Dolichophorus. Although most Medeterinae are associated with plants (mainly trees), species in at least two separate lineages demonstrate a secondary return to terrestrial habitats. The implication of this evolutionary phenomenon is briefly discussed.

© 2011 Entomological Society of Canada
Marc Pollet, Christoph Germann, and Marco Valerio Bernasconi "Phylogenetic Analyses using Molecular Markers Reveal Ecological Lineages in Medetera (Diptera: Dolichopodidae)," The Canadian Entomologist 143(6), 662-673, (1 December 2011).
Received: 19 December 2010; Accepted: 1 March 2011; Published: 1 December 2011

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