First report of Idiomacromerus balasi (Hym.: Torymidae), parasitoids of a cecidomyiid gall midge in Iran.
During a study of medicinal plant pests in Kaleibar, north of East-Azarbaijan province in the northwest of Iran, 4 parasitoids specimens of gall midge species were collected on yellow chamomile, Anthemis tinctoria. The specimens were identified as Idiomacromerus balasi. This species belong to the subfamily Toryminae and tribe Microdontomerini and has been reported from Europe (Bulgaria, Czechoslovakia, Georgia, Hungary, Moldova, Slovakia and former Yugoslavia) and Jordan. The morphological characteristics of I. balasi are described. This is thought to be the first record of Idiomacromerus balasi from Iran.