| Arcas | |
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| Arcas and related genera | |
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| Genus: | Arcas Swainson, 1832
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Arcas is a genus of butterflies in the family Lycaenidae. The species of this genus are found in the Neotropical realm.
The genus was erected by William John Swainson in 1832. The sister genus of Arcas is Theritas.