Host Plant Ranges and Distribution Records of Identified and Unidentified Species of the Genus Lasioptera (Diptera : Cecidomyiidae) in Japan

Abstract

Thirteen identified and 12 unidentified gall-inducing species of Lasioptera are recognized to occur in Japan on 48 plant species/subspecies/varieties belonging to 25 genera of 15 families. Twenty of these 25 species induce galls on stems and the other galls develop on leaf veins or leaf blades. Two plant species and one subspecies were newly found to host Japanese Lasioptera. New Japanese names are given to some galls to distinguish host plants conveniently. Many prefectures and islands are newly added to known distribution ranges of respective species based on collecting data of galls. In order to identify Lasioptera species that infest tomato and cucumber in Greece and tomato in Japan, we emphasize the use of genetic data to determine host plant ranges of morphologically similar species.