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Kingdom: Animalia Phylum: Arthropoda Class: Insecta Order: Lepidoptera Family: Nymphalidae Tribe: Ithomiini Genus: Greta Species: G. oto Binomial name Greta oto The Glasswinged butterfly (Greta oto) is a brush-footed butterfly, and is a member of the subfamily Danainae, tribe Ithomiini, subtribe Godyridina. G. oto adults also exhibit a number of interesting behaviors, such as long migrations and lekking among males. The wings are transparent, with a span of 5.6 to 6.1 cm (2.2 to 2.4 in). The butterfly's most common English name is glasswinged butterfly, and its Spanish name is "mariposa de cristal", which means "glass butterfly". The tissue between the veins of its wings looks like glass, as it lacks the colored scales found in other butterflies. The opaque borders of its wings are dark brown, sometimes tinted with red or orange, and its body is dark in color.
Adult glasswings can be found from Mexico through Panama and Colombia. They can migrate great distances and have been documented as far north as Florida.