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Abai, MR

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6th International Congress of DipterologyKey Words: Agromyzidae, Phytomyza, phylogeny, diversification, hostshifts∗∗∗∗∗∗∗∗∗∗Evolution of the Therevoid clade (Diptera: Asiloidea) withspecial emphasis on Window flies (Scenopinidae): a totalevidence approachWinterton, S.L.California Department of Food & Agriculture, Plant Pest Diagnostics Branch, 3294Meadowview Road, Sacramento, California 95832-1448, USA.A robust estimate of Asiloidea phylogenetic relationships has provenelusive, with numerous differing hypotheses of relationships between theconstituent families. Whilst Therevidae and Scenopinidae have historicallybeen associated as sister groups based on larval characteristics,descriptions of two additional and closely related families (i.e. Evocoidaeand Apsilocephalidae) has blurred our understanding of evolution of whathas become known as the therevoid clade. A well-supported total evidencephylogeny of the Therevoid clade is presented based on DNA sequencedata (CAD, 16S, COI, 18S) and over 100 morphological characters.Relationships of the four families are discussed, as well as subfamilial andgeneric relationships of Scenopinidae and Therevidae and implications forthe higher-level classification of these families.Key Words: Therevidae, Scenopinidae, systematics, Evocoidae,Apsilocephalidae∗∗∗∗∗∗∗∗∗∗306

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