grain borer
noun
1- a beetle that feeds on grain and rice and is a common pest of granaries and flour mills谷物蛀虫, 虫蠹（以谷物和稻米为生的甲虫, 是常见于粮仓和磨坊的害虫）。
1.1
- Family Bostrichidae: several species, including the tropical lesser grain borer (Rhizopertha dominica), now found worldwide.长蠹科：数种, 包括热带的谷蠹（拉丁名Rhizopertha dominica）, 这种谷蠹现在已经遍布全世界。