Acarological Society of Iran Persian Journal of Acarology 2251-8169 13 3 2025 12 01 Notes on Atractothrombiumand Fissitrombium(Acari: Trombidiformes: Micro-trombidiidae) with description of a new speciesof Atractothrombiumfrom Iran 409 425 238187 10.22073/pja.v13i3.85383 EN Masoud Hakimitabar Department of Plant Protection, Faculty of Agriculture, Shahrood University of Technology, Shahrood, Iran Alireza Saboori Department of Plant Protection, College of Agriculture, University of Tehran, Karaj, Iran and Department of Plant Protection, Faculty of Agriculture, Aydin Adnan Menderes University, Aydin, Türkiye 0000-0002-3101-1330 Journal Article <em>Atractothrombium joharchii </em><strong>sp. nov. </strong>ectoparasitic on an unknown Tachinidae (Insecta: Diptera) is described from Alborz province, Iran. A re-definition of the genus <em>Atractothrombium</em> is presented. A key to the larval genera of Microtrombidiinae of the world with two median scuta and anterior scutum with longitudinal striations is given. Leg setal formula of two species of <em>Fissitrombium </em>described by Southcott (1994) are given. https://www.persianacarology.org/article_238187_8a003157b6d2455863ff3cbf6e507411.pdf