Systematics Of Sapromyza From China(Diptera:Lauxaniidae)

In the dissertation,mainly twenty six species of the genus Sapromyza are new to science and two species are newly record to the provinces by methods of the comparative morphology and comparative anatomy.A key to separate all species of this genus is presented,and the genitalia of twenty eight species are illustrated,and the photographs of morphological characters of twenty eight species are integrated.With fifty nine morphological features,the phylogenetic relationships between Sapromyza and other genera of Lauxaniinae,and between two subgenera and different species of the genus Sapromyza are analyzed.This confirms that the genus Sapromyza is not monophyletic.The genus Sapromyza may be closely related to the genus Minettia,Meiosimyza and Nimettia.In addition,one species of the genus Nimettia,three species of Homoneura,three species of Minettia and six species of Meiosimyza as the outgroups are described.The genitalia of thirteen species are illustrated.The photographs of the morphological feature of thirteen species are combined.The results not only enrich the insect flora of the family Lauxaniidae,but also provides an important scientific basis for the accurate identification of the species of the genus Sapromyza.