A total of 173 sorts of cecidomyiid gall on 132 plant species across 88 genera of 54 families were recognized to occur in Fukuoka Prefecture. Among them, three sorts are new findings from Japan, and three plant species were regarded to be new hosts of cecidomyiids in Japan. Cecidomyiid galls were most abundant in Fagaceae, followed by Asteraceae, Fabaceae, Styracaceae, and Rosaceae. Species of gall-bearing plant were most abundant in Asteraceae, followed by Fagaceae, Fabaceae, Vitaceae, and Rosaceae. Sixty cecidomyiids were identified to the species level and 34 to the genus level. Among identified cecidomyiids, species of the genus Asphondylia were most abundant, followed by Contarinia, Rhopalomyia, and Schizomyia. The faunistic comparison between Fukuoka and Korea supports the consideration that Japanese cecidomyiids expanded their range northwards through Tsushima as a stepping stone island rather than for Korean cecidomyiids did southwards.
Galls induced by Daphnephila gall midges on Machilus bombycina King ex Hook.f. (= Percea bombycina (King ex Hook.f.) Kosterm.) and Machilus gamblei King (Lauraceae) were respectively surveyed in Assam and West Bengal, India. On each plant, one leaf and one stem gall were found. The leaf and stem gall inducers on M. gamblei have been known as Daphnephila haasi Kieffer and D. glandifex Kieffer, respectively. However, because shapes of both leaf and stem galls were different between M. bombycina and M. gamblei, gall inducers associated with M. bombycina are probably different species from D. haasi and D. glandifex. Although the leaf galler on M. bombycina was identified as a species of Asphondylia in some previous studies, gall midge features as well as gall morphology clearly indicate that the inducer is a member of the genus Daphnephila.
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