Mohammad Khayrandish - Deptartement of Entomology, Faculty of Agriculture, Tarbiat Modares University, P O. Box: ۱۴۱۱۵-۳۳۶, Tehran, Iran
Ali Asghar Talebi - Deptartement of Entomology, Faculty of Agriculture, Tarbiat Modares University, P O. Box: ۱۴۱۱۵-۳۳۶, Tehran, Iran
Stephan M. Blank - Senckenberg Deutshes Entomologisches Institut, Eberswalder Str. ۹۰, ۱۵۳۷۴ Müncheberg, Germany
Yaghoub Fathipour - Deptartement of Entomology, Faculty of Agriculture, Tarbiat Modares University, P O. Box: ۱۴۱۱۵-۳۳۶, Tehran, Iran

The genus Ametastegia Costa ۱۸۸۲ (Hymenoptera: Tenthredinidae: Allantinae) was studied in northern Iran. The specimens were collected using sweeping net and Malaise traps during March to November ۲۰۱۰ and ۲۰۱۱. Four species were collected and identified of which Ametastegia persica Khayrandish, Talebi & Blank sp. n. is described as new to science. An illustrated key for identification of Ametastegia species in Iran is provided.

Symphyta, new species, identification key, taxonomy