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''Dryocosmus'' are a genus of gall wasps. They are cyclically parthenogenetic insects that induce galls on plants in the family Fagaceae. According to recent studies, the genus includes some species previously considered as belonging to the genus ''Chilaspis'', whereas ''Dryocosmus favus'' should be excluded of the genus. ''Dryocosmus'' and ''Chilaspis'' are closely related to the other oak gall wasp taxa (''Aphelonyx'', ''Plagiotrochus'', ''Pseudoneuroterus'', ''Trichagalma'', and some ''Neuroterus'' species) 〔Z.Acs et al., The Phylogenetic Relationships Between ''Dryocosmus'', ''Chilaspis'' and Allied Genera of Oak Gallwasps (Hymenoptera, Cynipidae: Cynipini).Systematic Entomology, (2007), 32 pp.70-80〕 ''Dryocosmus kuriphilus'' is an invasive species in Europe〔Dryocosmus kuriphilus. Data sheets on quarantine pests, European and Mediterranean Plant Protection Organization (2006)〕 and North America (originating from Asia) that endangers the chestnut trees.〔L.K.Rieske, Success of an exotic gallmaker, Dryocosmus kuriphilus, on chestnut in the USA: a historical account, EPPO Bulletin 37 (1), 172–174 (2007)〕 ==References== de:Japanische Esskastanien-Gallwespe fr:Cynips du châtaignier 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dryocosmus」の詳細全文を読む スポンサード リンク
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