jointworm /ˈdʒɔɪntˌwɜːm/

• 1. 

  N the larva of chalcid flies of the genus Harmolita, esp H. tritici, which form galls on the stems of cereal plants 干酪蝇生的幼虫; 它们在粮食作物的茎上形成冠瘿 [美国英语]