Arrenurus (Truncaturus) knauthei Koenike

Material examined: IR12 Mazandaran Province, Nowshahr, ca. 10 km E Chalus, pond, 6 m asl, 37°17’ N 50°07’ E, 20 July 2003 (1/1/0); same location, 18 June 2005 (3/2/0). Distribution: Palaearctic.

Remarks: New for the fauna of Iran.