First record of Ibalia jakowlewi, Jacobson, 1899, and of the subgenus Tremibalia for Italy (Hymenoptera, Cynipoidea, Ibaliidae)

Ibalia jakowlewi Jacobson, 1899 is hereby recorded for the first time for Italy, based on three specimens collected in the Veneto region, which in turn represent the first record of the subgenus Tremibalia Kierych, 1973 for Italy. Some ecological notes based on the circumstances of their sampling are also reported