A new species of Scirtothrips Shull from leaves of Tamarix sp. is described and illustrated from southern Iran. Among Scirtothrips species, it is unusual in having two pairs of long pronotal posteroangular setae, and ocellar setae III unusually long. A key is provided to distinguish members of the Scirtothrips genus-group in Iran: Drepanothrips reuteri Uzel, Scirtothrips dorsalis Hood, S. hafezi sp. n. and S. mangiferae Priesner.