''Calycopis isobeon'', the dusky-blue groundstreak, is a butterfly native to the Americas, ranging from

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in ...

to central

Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...

. It is very similar to the red-banded hairstreak (''Calycopis cecrops'') and the two are sometimes treated as conspecific.

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Butterflies & Moths of North America
isobeon Butterflies of North America Butterflies described in 1872 Lycaenidae of South America Taxa named by Arthur Gardiner Butler Taxa named by Herbert Druce {{Lycaenidae-stub