First record in the Balearic Islands of Oobius rudnevi (Nowicki, 1928) (Hymenoptera: Encyrtidae), egg parasitoid of the great capricorn beetle, Cerambyx cerdo Linnaeus, 1758

[eng] The micro-wasp Oobius rudnevi (Nowicki, 1928) (Hymenoptera: Encyrtidae) is reported for the first time in the Balearic Islands (Spain). This egg parasitoid was detected in July 2023 in a holm oak forest located in Biniamar (Selva), Mallorca, using sentinel eggs of the great capricorn beetle, Cerambyx cerdo Linnaeus, 1758 (Coleoptera: Cerambycidae), the only known host species on the island. The presence of O. rudnevi in Mallorca is of phytosanitary significance considering the pest status of C. cerdo in its holm oak forests.