plural noun
Er·​i·​o·​phy·​i·​dae | \ˌerēōˈfīəˌdē\

Definition of Eriophyidae 

: a large family of minute wormlike plant-feeding mites with two pairs of legs placed far anterior, lacking a respiratory system, some forming galls, others feeding on leaves and often causing blisters

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History and Etymology for Eriophyidae

New Latin, from Eriophyes, type genus + -idae

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