Tehran University of Medical Sciences Journal of Arthropod-Borne Diseases 2322-1984 14 3 2020 07 30 1353 1353 Mohsen Najjari Department of Parasitology and Mycology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Bilal Dik Department of Parasitology, Faculty of Veterinary Medicine, Selçuk University, Selçuklu, Konya, Turkey Gamze Pekbey Department of Plant Protection, Faculty of Agriculture, Bozok University, Yozgat, Turkey 2020 09 24 Myiasis is infection with a fly larva, usually occurring in tropical and subtropical areas. A 32-years-old immunocom­pro­mised woman with fever, gastrointestinal pain, cramps, vomiting; and fatigue was referred to Ghaem Hospital in Mash­had in July 2018. Entomological characterisation of cephaloskeletons, posterior spiracles of the excreted larvae and gen­ital dissection of male fly were diagnosed as Sarcophaga (Liopygia) argyrostoma. Accidental intestinal myiasis caused by unplanned intake of dipterous larvae by contaminated food staff or water. Patients with immune deficiency may be more at risk for the threat of maggot’s infestation, so in such cases, hospital standard should be more in atten­tion. To best of our knowledge, S. argyrostoma has not been reported before in the indexed literature from Iran. https://jad.tums.ac.ir/index.php/jad/article/view/1353 https://jad.tums.ac.ir/index.php/jad/article/download/1353/505