Rare Animals: Top 10 Rarest Butterflies in the World
The glasswinged butterfly (Greta oto) is found in Mexico through Panama though some species have been spotted in Venezuela. The males of the species are known to lek (gather together). The transluscent wings can grow as much as (tip to tip) 2.4 inches. The "glass-like" appearance of the wings is due to the lack of tissues or scales between the veins.