noun
ox warble fly
A parasitic fly whose larvae infest cattle; the scientific name is Hypoderma bovis. This is a technical term mostly encountered in veterinary or agricultural contexts.
ウシバエの幼虫は牛の皮下に寄生する。
The larvae of the ox warble fly parasitize under the skin of cattle.
Compound of 牛 (ushi, 'cattle') and 蠅 (hae, 'fly'), with rendaku voicing of hae to bae. The kanji spelling 牛蠅 is a direct representation of these components.