The ked Melophagus ovinus is a Dipteran (two-winged fly) without wings, and occurs on sheep around the world. The life cycle is entirely on the sheep. Melophagus ovinus are wingless, blood-feeding flies, and a parasite of sheep around the world, although there are very occasional records from other domestic as well as free-ranging animals. (University of Saskatchewan. 2021. Melophagus ovinus.https://wcvm.usask.ca/learnaboutparasites/parasites/melophagus-ovinus.php)
Stomoxys calcitrans (L.), the stable fly, is a filth fly of worldwide medical and veterinary importance. Stable flies are obligate blood feeders, and primarily attack cattle and horses for a blood meal. (Entomology and Nematology Department, University of Florida, 2015. Stomoxys calcitrans https://entnemdept.ufl.edu/creatures/URBAN/MEDICAL/Stomoxys_calcitrans.htm)
Oestrus ovis, the sheep bot fly, is a widespread species of fly of the genus Oestrus. It is known for its parasitic predation and damage to sheep, deer, goats and sometimes cattle. In some areas of the world it is a significant pest which affects the agricultural economy. (Wikipedia. 2024. Oestrus ovis. https://en.wikipedia.org/wiki/Oestrus_ovis)