Contributions to the fauna of Geometridae in the north eastern provinces

This article is based on Geometridae species collected from Ardahan, Bayburt, Erzincan, Erzurum, Gumushane and Kars provinces in 2021. Geometridae species were collected using insect net and light traps. All collected samples were prepared and diagnosed in the laboratory. As a result, 4 subfamilies, 23 genera and 27 species were determined. Photos of all diagnosed species and material examined were presented. In addition, 7 from Ardahan, 8 from Bayburt, 5 from Erzincan, 5 from Erzurum, 8 from Gümüşhane and 3 from Kars were determined for the first time in this study Geometridae species.