New gall midge taxa (Diptera : Cecidomyiidae) from Australian Chenopodiaceae

Five new species and a new genus of gall midge are described from flower galls on native chenopod plants in Eyre Peninsula, South Australia. <i>Asphondylia vesicaria</i> sp. n. induces galls on <i>Atriplex vesicaria</i>; A. <i>mcneill</i>i sp. n. on <i>Sclerolaena diacantha</i>; and <i>A. tonsura</i> sp. n. on <i>Enchylaena tomentosa</i>. Infested flowers develop into galls and produce no seeds. DNA analysis of part of the cytochrome-c oxidase subunit I mitochondrial gene supported the morphological and biological differences between each of the new species and the previously described <i>A. floriformis</i> (Veenstra-Quah & Kolesik) and <i>A. sarcocorniae</i> (Veenstra-Quah & Kolesik) that induce galls on leaves and branches, respectively, of <i>Sarcocornia quinqueflora</i> (Chenopodiaceae) in Australian salt marshes. A new genus, <i>Dactylasioptera</i> gen. n. and two new species of Lasiopterini, <i>D. adentata</i> sp. n. and <i>D. dentata</i> sp. n. are described – both were reared from galls of <i>A. mcneilli</i> and <i>A. tonsura.</i><br />