noun
horse botfly larva
Rare term for the larva of a horse botfly (Gasterophilus species). The cross-reference 馬蠅 (うまばえ) refers to the adult fly.
See also: 馬蠅
古い文献に「筍虫」という名で馬の胃に寄生する幼虫が記録されている。
In old documents, a larva that parasitizes the stomach of horses is recorded under the name 筍虫.