Abai, MR

6th International Congress of DipterologyPhylogeny of the Lower Cyclorrhapha (Diptera)Skevington, J.H., J.M. Cumming, B.J. Sinclair, B.M. Wiegmann, J.K. Moulton, B. Cassel.Agriculture and Agri-Food Canada, Ottawa, ON, K1A 0C6, CANADA,skevingtonj@agr.gc.caA key area of the brachyceran phylogeny that has posed ongoing problemsinvolves the basal cyclorrhaphan lineages. Several conflictingmorphological hypotheses exist. These conflicts are based partly ondifferences in interpretation of homology and character evolution.Molecular data should provide an independent approach to examiningthese relationships but up until now no molecular data have been focussedon this problem (although related studies have focussed on Empidoideaand Syrphoidea). In the present study, we attempt to synthesizemorphological evidence, add new morphological characters, and focusefforts of molecular data collection on this part of the phylogenetic tree.Forty-two Eremoneura exemplars and two outgroup taxa were chosen torepresent the Eremoneura diversity. Molecular data were obtained for threegenes: 632 base pairs from 12s mitochondrial rDNA, 818 base pairs fromthe 3' end of 28s nuclear rDNA, and 4469 base pairs of the nuclear geneCAD were utilized. The results of analyses of all datasets will be presented.Key Words: Diptera, phylogeny, lower cyclorrhapha, total evidence,‘Aschiza’∗∗∗∗∗∗∗∗∗∗238