ghost ant

US /ˈɡoʊst ænt/
UK /ˈɡoʊst ænt/
"ghost ant" picture
1.

a species of ant (Tapinoma melanocephalum) known for its pale, translucent legs and abdomen, making it difficult to see, and often found in tropical and subtropical regions as a household pest

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We called an exterminator because of the ghost ants in our kitchen.
Ghost ants are notoriously difficult to spot due to their pale coloration.