Subimago
Pronunciation : Sub`i*ma"go
Part of Speech : n.
Etymology : [NL. See Sub-, and Imago.] (Zo?l.)
Definition : Defn: A stage in the development of certain insects, such as the May flies, intermediate between the pupa and imago. In this stage, the insect is able to fly, but subsequently sheds a skin before becoming mature. Called also pseudimago.
Source : Webster's Unabridged Dictionary, 1913