Abstract
Noctuidae fauna of Botan Valley is investigated for the first time. In total, 83 noctuid moth species are discovered from the research area and, 11 of them are new recorded from Siirt province. Adult figures of Aegle nubila (Staudinger, 1892), Deltote delicatula (Christoph, 1882), Plecoptera inquinata (Lederer, 1857), and Zekelita ravalis (Herrich-Schäffer, [1852]) are presented. The distributions of the species according to localities are discussed and comparison of the species number in Siirt and neighbouring provinces are given.