First record of Hydropsyche cornuta Martynov, 1909 (Trichoptera, Hydropsychidae) from Iran

Caddisfly sampling conducted during July 2021 from the Shalmash Waterfall in the West Azerbaijan Province of Iran, revealed the first record of Hydropsyche cornuta Martynov, 1909 for Iran. Previously this species had been known from several localities in Türkiye and few localities in Georgia, Lebanon and Syria. The morphology of male genitalia in the collected specimens from Iran corresponds to the described species. This discovery increases considerably the known areal of Hydropsyche cornuta and contributes to the knowledge of the Iranian Hydropsychidae. Shalmash Waterfall from where the new record is found is otherwise known for exceptional composition of aquatic insect fauna, including rare and endemic species.