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Arcas Swainson 1832 type species: Papilio imperialis Cramer

Andrew V. Z. Brower
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taxon links [up-->]Arcas imperialis [up-->]Arcas cypria [up-->]Arcas tuneta [up-->]Arcas jivaro [up-->]Arcas gozmanyi [up-->]Arcas alleluia [up-->]Arcas delphia [up-->]Arcas splendor [up-->]Arcas ducalis [down<--]Eumaeini Interpreting the tree
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The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right.

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Containing group: Eumaeini


A neotropical genus containing some of the world's largest and most spectacular hairstreak species.  Larval hostplants in the genus <em>Rollinia</em> (Annonaceae) (Robbins et al., 2012)

Discussion of Phylogenetic Relationships

The tree topology is based on the phylogenetic analysis of morphological characters by Robbins et al. (2012).


Robbins, R. K. 2004. 2004e. Lycaenidae. Theclinae. Tribe Eumaeini, pp. 118-137. In: Lamas, G. (Ed.), Checklist: Part 4A. Hesperioidea - Papilionoidea. In: Heppner, J. B. (Ed.), Atlas of Neotropical Lepidoptera. Volume 5A. Gainesville, Association for Tropical Lepidoptera; Scientific Publishers.

Robbins, R. K., A. R. P. Martins, et al. (2012). "Loss of male secondary sexual structures in allopatry in the neotropical buttefly genus Arcas (Lycaenidae: Theclinae: Eumaeini)." Insect Syst. Evol. 43: 35-45.

Title Illustrations
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Scientific Name Arcas tuneta
Location Brazil: Rond˘nia, Poto Velho, Rancho Grande
Specimen Condition Live Specimen
Identified By Rich Hoyer
Life Cycle Stage adult
View ventral
Source Tuneta Arcas (Arcas tuneta)
Source Collection Neotropical Butterflies
Copyright © 2004 Rich Hoyer
About This Page

Middle Tennessee State University, Murfreesboro, Tennessee, USA

Correspondence regarding this page should be directed to Andrew V. Z. Brower at

Page: Tree of Life Arcas Swainson 1832 type species: Papilio imperialis Cramer. Authored by Andrew V. Z. Brower. The TEXT of this page is licensed under the Creative Commons Attribution License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

Citing this page:

Brower, Andrew V. Z. 2013. Arcas Swainson 1832 type species: Papilio imperialis Cramer. Version 19 May 2013 (under construction). http://tolweb.org/Arcas/112444/2013.05.19 in The Tree of Life Web Project, http://tolweb.org/

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