Arcas

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Panorpida
Cladus: Amphiesmenoptera
Ordo: Lepidoptera
Subordo: Glossata
Cladus: Coelolepida
Cladus: Myoglossata
Cladus: Neolepidoptera
Infraordo: Heteroneura
Cladus: Eulepidoptera
Cladus: Ditrysia
Cladus: Apoditrysia
Cladus: Obtectomera
Superfamilia: Papilionoidea

Familia: Lycaenidae
Subfamilia: Theclinae
Tribus: Eumaeini
Genus: Arcas
Species: A. alleluia – A. arcadia – A. cypria – A. delphia – A. ducalis – A. gozmanyi – A. imperialis – A. jivaro – A. lecromi – A. marginata – A. nicolayi – A. splendor – A. tuneta
Name

Arcas Swainson, 1832

Type species: Papilio imperialis Cramer, 1775 by monotypy.
References

Austin, G.T. & Johnson, K., 1995: Theclinae of Rondonia, Brazil: Arcas, with Descriptions of Three New Species. Tropical Lepidoptera, 6 (1): 31–39. Full article: [1]
Bálint, Zs., 2002. Miscellaneous notes on Arcas Swainson, 1832 (Lepidoptera: Lycaenidae, Eumaeini). Annales historico-naturales Musei nationalis hungarici 94: 141–161. PDF. Reference page.
Bálint, Zs., 2006: Arcas Swainson, 1832 is revisited: review of some species-group names, identification of the sister group and a key for species (Lepidoptera, Lycaenidae: Eumaeini). Annales historico-naturales Musei nationalis hungarici 98: 147–158. Full article: [2].
Nicolay, S.S., 1971: A review of the genus Arcas with descriptions of new species (Lycaenidae, Strymonini). Journal of the Lepidopterists' Society 25 (2): 87–108. Full article: [3].

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.
Species

Arcas alleluia Bálint, 2002
Arcas arcadia Bálint, 2002
Arcas cypria (Geyer, 1837)
Arcas delphia Nicolay, 1971 - Costa Rica and Colombia
Arcas ducalis (Westwood, 1852) - Brazil
Arcas gozmanyi Bálint, 2006
Arcas imperialis (Cramer, 1775) -Mexico, Colombia, Bolivia, Peru, Ecuador, Guyana and Brazil
Arcas jivaro Nicolay, 1971 - Ecuador and Peru
Arcas nicolayi Salazar Escobar & Constantino, 1995
Arcas splendor (Druce, 1907)
Arcas tuneta (Hewitson, 1865) - Brazil two forms

References

Bálint, Zs., 2006 Arcas Swainson, 1832 is revisited: review of some species-group names, identification of the sister group and a key for species (Lepidoptera, Lycaenidae: Eumaeini) Annales historico-naturales Musei nationalis hungarici 98 :147-158. ISSN 0521-4726 [1][permanent dead link]