龜蠅 [龟蝇]

Jyutping gwai1 jing4
Pinyin guī yíng

Definitions (Wiktionary)
  1. noun, Min-Nan
    aphid
    (syn.) 枯蝇, 蚜蟲, 蟻子, 蚜虫, 枯蠅, 蚁子, 油蟲, 油虫