Abstract
Atlanteuptychia Freitas, Barbosa & Mielke, gen. nov. is proposed for Euptychia ernestina Weymer, 1911 and illustrated. This taxon lacks the posterior projection of the tegumen, a synapomorphy of Euptychia Hubner, 1818, and does not share morphological synapomorphies with Cyllopsis R. Felder, 1869 and Paramacera Butler, 1868, two Central American genera apparently closely related to Euptychia ernestina, based on molecular data. This evidence supports the proposition of a new genus endemic to the Atlantic Forest, A. ernestina stat. nov.
Highlights
With over 400 described species, the subtribe Euptychiina (Nymphalidae: Satyrinae: Satyrini) is mostly Neotropical, with a single species in the Nearctic region and one in Southeast Asia (LAMAS 2004a, PEÑA et al 2006, 2010, MARÍN et al 2011)
This taxon lacks the posterior projection of the tegumen, a synapomorphy of Euptychia Hübner, 1818, and does not share morphological synapomorphies with Cyllopsis R
1869 and Paramacera Butler, 1868 (PEÑA et al 2006, 2010). In this contribution we propose a new genus for Euptychia ernestina and provide a detailed morphological description of this species
Summary
Specimens of E. ernestina were studied and collected in the field in six localities in Southeastern Brazil: 1) Vale do Rio. Dorsal ground color of both wings brown with few markings; dark sub marginal stripe especially conspicuous in HW; well-defined androconia comprising long, dark hair-like scales in space CuA2-2A on the HWD (Figs 1 and 5) Ventral color of both wings brown with several markings as following: FWV crossed by two weakly marked dark brown lines, first line extended from Sc, crossing discal cell to half the space CuA2-2A one third from base; second line, broader, extended from costa to half the space CuA2-2A two-thirds from the wing base; dark brown zigzagging sub marginal line and a brown regular marginal line extending from costa to 2A; apical region light, covered with cream scales, with well-developed dark ocellus in space R5-M1 complete, outlined by yellow ring, and with silver pupil; two to three additional irregular weakly marked silver ocelli without the black areas and with incomplete yellow outline apparent in most examined individuals are usually present in space M1-M2 and M2-M3. There is no additional information about behavior of either males or females, and host plants are unknown
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