Hippobosca equina, also known as the forest fly or New Forest fly, is a biting fly from the familyHippoboscidae. They are blood-feeding ectoparasites of primarily horses and other large mammals including cattle.[5][6] It is a permanently fully winged fly, not shedding its wings on finding its host, as in some other Hippoboscidae. With its wings retained, it may thus fly away from its host to deposit its larvae.[7] They are good fliers.[4]
^Colyer, C. N.; Hamond, C. O. (1951). Flies of the British Isles. The Wayside and Woodland Series (2nd ed.). London: Frederick Warne & Co. Ltd. p. 384.