noun
Tabanus chrysurus (species of horsefly)
A specific species of horsefly; primarily a biological term.
アカウシアブは大型のアブの一種です。
Tabanus chrysurus is a type of large horsefly.
Compound of 赤 (aka, 'red') + 牛虻 (ushiabu, 'horsefly'), referring to its reddish coloration. The exact derivation is uncertain.