Abstract: Objective To develop a diagnostic key with third-instar larvae of common flies for habitat investigation and fly larvae identification. Methods A retrieval table was constructed using systematic inductive method and illustrated using dendritic tree. Results The retrieval table included fly larvae of 26 species. All records were divided into two categories according to the existence of posterior process on the 8th abdominal segment. Larvae without posterior process on the 8th abdominal segment were further divided into two categories according to peritreme integrity.Conclusion The retrieval table is simple, intuitive, and easy to use. It can be applied in habitat investigation, monitoring of fly larvae, hygiene assessment, management for epidemic foci of vector-borne diseases, and forensic insect identification.

Key words: Fly, Larva, Key

摘要： 目的 探讨常见蝇种3龄幼虫的检索方法,以供孳生地调查和蝇类幼虫鉴定。方法 采用系统归纳法,用树状结构图例表示。结果 检索表共记述26种幼虫,根据第8腹节有无后突分为两类,第8腹节无后突的又分为气门环完整和不完整两类。结论 检索表简易、直观、易操作,可供社区孳生地调查、蝇幼监测、卫生考核、病媒生物性传染病疫点处理、法医昆虫鉴定提供参考。

关键词: 蝇类, 幼虫, 检索表