The Asiatic citrus psyllid, Diaphorina citri Kuwayama (Hom.: Psyllidae), is one of the most important pests on citrus in tropical and subtropical Asia. It was detected in Iran during the recent years and distributed in some parts of Hormozgan and Sistan-Baluchestan provinces. During the survey carried out to determine natural enemies of this psyllid, a nymphal parasitoid wasp was identified as Psyllaephagus stenopsyllae (Tachikawa). This is the first report of P. stenopsyllae in Iran. This species has previously been reported from Taiwan, China and Japan as a parasitoid of Stenopsylla nigricornis Kuwayama and Trioza zyzygii Li & Yong (Hom.: Psyllidae)
