Origin: East Asia (China)
First finding in Slovenia: 2007
Pathways: transported with saplings and branches for grafting, secondary spontanuous spreading
Possible to identify: year-round
Flight time of adults: May-July
Habitat: On European chestnut trees in forests, tree nurseries and urban environments.
Status in Slovenia: Widespread.
Similar species: Several other gall wasps are very similar, but have other host plant species.
More information on CABI