Update on the natural occurrence of Goniozus legneri (Hymenoptera: Bethylidae) in walnut agroecosystems of Catamarca and first record in the Famatina department, La Rioja province

An update on the records of Goniozus legneri Gordh (Hymenoptera: Bethylidae) in walnut systems in the Ambato and Andalgalá departments of the Catamarca province is presented, where it was observed parasitizing larvae of Cydia pomonella Linnaeus (Lepidoptera: Tortricidae). In addition, its presence is documented for the first time in La Rioja province, on Ectomyelois ceratoniae (Zeller) (Lepidoptera: Pyralidae) larvae on post-harvest walnut. Details regarding external morphological characteristics for identification are mentioned. Furthermore, information on its biology and its role as a biocontroller of lepidopteran pest populations is discussed.