Ophelimus maskelli is a uniparental leaf galler. Adult O. maskelli oviposit into the leaf blade of eucalypts, one female can lay an average of 109 eggs and each egg induces a gall. Larvae develop and pupate within the galls, from which the adult wasps emerge. Three generations per year have been reported from Israel (Protasov et al. 2007, Burks et al. 2015).