A new inquiline oak gall wasp species, Saphonecrus yukawai Wachi, Ide & Abe, sp. nov. (Hymenoptera: Cynipidae: Synergini), is described from Japan. Although most inquiline oak gall wasps are associated with cynipid galls on Quercus trees, the adult wasps of S. yukawai emerged from galls induced by the gall midge Ametrodiplosis acutissima (Monzen) (Diptera: Cecidomyiidae) on Quercus (sect. Cerris) acutissima Carruthers. Host shift from cynipid galls to cecidomyiid galls in inquiline oak gall wasps is discussed.
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1 May 2011
A New Inquiline Species of Saphonecrus (Hymenoptera: Cynipidae: Synergini) Associated with Cecidomyiid Galls on Oak Trees in Japan
Nakatada Wachi,
Tatsuya Ide,
Yoshihisa Abe
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Annals of the Entomological Society of America
Vol. 104 • No. 3
May 2011
Vol. 104 • No. 3
May 2011
Cecidomyiidae
inquiline oak gall wasp
new species
Quercus