Phylogenetic Classification of the Atlides Section of the Eumaeini (Lepidoptera, Lycaenidae) Author Martins, Ananda Regina P. Author Duarte, Marcelo Author Robbins, Robert K. text Zootaxa 2019 2019-02-28 4563 1 119 134 journal article 28153 10.11646/zootaxa.4563.1.6 0d849a4d-5dd1-4f60-9036-939f4486fe72 1175-5326 2601017 8E2935BD-3608-4BE1-B565-AE50966EE510 Arcas Swainson, 1832 Type species: Papilio imperialis Cramer The species currently placed in Arcas have been recognized as a distinct and widespread Neotropical group for more than a century ( Godman & Salvin 1887 –1901; Draudt 1919 –1920). Nicolay (1971) first revised the genus, recognizing seven species. In the ensuing decades, other names were proposed, leading to the phylogenetic revision in Robbins et al. (2012) and the recognition of nine species. The study of Martins et al. (2018) identified ten synapomorphies for Arcas ( Table 1 , Fig. 8 ), but the emerald green ventral wings, long hindwing tails, and deep anal lobe cleft are conspicuous characterizing traits ( Fig. 2 and 9 ). The genus can also be recognized by its male and female genitalic structures. The phylogenetic results in Martins et al. (2018) differ from those in Robbins et al . (2012) in the position where the genus is rooted. The grouping A. splendor + A. alleluia + A. gozmanyi was a monophyletic lineage previously, but because of the changed rooting, is now a paraphyletic group. Arcas imperialis (Cramer, 1775) ( Papilio ) , type locality: Surinam actaeon (Fabricius, 1775) ( Papilio ), type locality:?, suppr. (ICZN, Op. 1058) venus (Fabricius, 1781) ( Papilio ), type locality: Surinam , repl. name oakesii (Butler, 1884) ( Theritas ), type locality: Colombia magnifica Austin & K. Johnson, 1995, type locality: Brazil (RO) Distribution and Habitat . Mexico to Argentina and southern Brazil in wet lowland forest up to about 1,000 m elevation. Arcas ducalis (Westwood, [1851] ( Thecla ), type locality: Brazil Distribution and Habitat . Brazil from RJ to RS in wet lower montane forest in the north and at lower elevations in the south. Arcas cypria (Geyer, 1837) ( Theritas ) , type locality: Mexico (YUC) paphia (C. Felder & R. Felder, 1865) ( Pseudolycaena ), type locality: Colombia publica (Röber, 1923) ( Thecla ), type locality: Colombia Distribution and Habitat . Mexico to Venezuela and Colombia in wet lowland forest. Arcas jivaro Nicolay, 1971 , type locality: Ecuador Distribution and Habitat . Ecuador to Bolivia in wet lower montane forest. Arcas delphia Nicolay, 1971 , type locality: Costa Rica katia Salazar, 2001, type locality: Colombia , nom. nud. katia K. Johnson & Salazar, 2002, type locality: Colombia Distribution and Habitat . Costa Rica to western Ecuador in wet lowland forest. Arcas tuneta (Hewitson, 1865) ( Thecla ) , type locality: [ Brazil (AM)] marginata Austin & K. Johnson, 1995, type locality: Brazil (RO) viriditas Austin & K. Johnson, 1995, type locality: Brazil (RO) arcadia Bálint, 2002 , type locality: Brazil (SC) Distribution and Habitat . The Guianas to southern Brazil in wet lowland forest up to lower montane elevations. Arcas gozmanyi Bálint, 2006 , type locality: Panama Distribution and Habitat . Costa Rica to western Ecuador in wet lower montane forest. Arcas splendor ( H.H. Druce, 1907 ) ( Thecla ) , type locality: Colombia nicolayi Salazar & Constantino, 1995, type locality: Colombia lecromi Salazar & Constantino, 1995, type locality: Colombia Distribution and Habitat . Colombia and Ecuador in montane forest (mapped in Robbins et al. 2012 ). Arcas alleluia Bálint, 2002 , type locality: Peru Distribution and Habitat . Eastern Peru in montane forest.