Acarological Society of Iran Persian Journal of Acarology 2251-8169 14 1 2025 01 15 First record of two eriophyoid mites (Acari: Eriophyoidea) on Cyperus rotundus L. (Cyperaceae) from Egypt 97 113 238123 10.22073/pja.v14i1.85707 EN Ashraf Said Elhalawany Fruit Tree Mite Department, Plant Protection Research Institute, Agricultural Research Centre, 12611 Dokii, Giza, Egypt Ahmed I. Amer Cotton and Field Crops Mite Department, Plant Protection Research Institute, Agricultural Research Centre, Dokii, Giza, Egypt Mohamed Abdel Hady Department of Agriculture Zoology and Nematology. Faculty of Agriculture, Al Azhar University, Cairo. Egypt Journal Article 2024 06 02 Eriophyoid mites offer a significant ecosystem service by weed control. They induce malformations (leaf rolling, erinea, galls, stunting growth, blistering), rusting, bronzing, damages of seeds, and transmit viruses to their host plants. During a survey in Egypt, two eriophyoid species were recorded for the first time in the country<em> on Cyperus rotundus L. (Cyperaceae) which has a worldwide relevance as weed</em>:<em> Eriophyes rotundae</em> Mohanasundaram (Eriophyidae) and <em>Oziella gigantica </em>(Mohanasundaram) (<em>Phytoptidae).</em> Both species are vagrants underneath the inner surface of the leaf sheath around the stem, even though they can cause leaf rusting which leads to drying and death of the plants. A complementary description of the two species was presented, based on adult females. In addition, male and immature stages of <em>O. gigantica</em> and <em>E. rotundae were described in detail for the first time. </em>Furthermore, the checklist and morphological key for eriophyoid mite species associated with <em>Cyperus</em> plants worldwide were updated. https://www.persianacarology.org/article_238123_59a974cd0335f3477a34433234414b53.pdf