Acarapis woodi is an internal parasite affecting honey bees,[1] the symptoms of infestation were originally observed on the Isle of Wight in 1904,[2] but was not described until 1921.

[3] Acarapis woodi mites live and reproduce in the tracheae of the bees.

[3] The mites parasitize young bees up to two weeks old through the tracheal tube openings.

There, they pierce the tracheal tube walls with their mouthparts and feed on the haemolymph of the bees.

[3] Mercedes Delfinado identified Acarapsis woodi's presence in the USA.