Mesene eupteryx Bates, 1868

Dolibaina, Diego Rodrigo, Dias, Fernando Maia Silva, Siewert, Ricardo Russo, Mielke, Olaf Hermann Hendrik & Casagrande, Mirna Ma, 2016, Mesene Doubleday (Lepidoptera: Riodinidae) from Parque Nacional da Serra do Divisor, Acre, Brazil, with taxonomic notes and the description of a new species, Zootaxa 4175 (5), pp. 463-472: 469

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Mesene eupteryx Bates, 1868


Mesene eupteryx Bates, 1868  stat. rest.

( Figs 9–12View FIGURES 1 – 32, 36View FIGURES 33 – 40, 42View FIGURES 41 – 45)

A single female was collected in 2014 flying on the hilltop three meters from the ground around 16:00h. The male illustrated in the figures 9–10 is from Reserva Catuaba , Senador Guiomard, Acre, Brazil, 700 Km southeast from PNSD. 

Mesene eupteryx  , originally described as a species, was placed by Stichel (1923) as a subspecies of M. nola Herrich-Schäffer  , [1853] ( Figs 13–14View FIGURES 1 – 32). Specimens deposited at the DZUPAbout DZUP revealed these two taxa in sympatry in Ilha de Maracá, Alto Alegre , Roraima  , Brazil. The male genitalia of M. nola  ( Fig. 37View FIGURES 33 – 40) differs from that of M. eupteryx  ( Fig. 36View FIGURES 33 – 40) by the shorter proximal area of the valva, by the valva distally pointed instead of rounded, and the absence of a short and narrow projection in the inner surface of the valva. Based on these differences we recognize M. eupteryx  stat. rest. as a valid species.

Taxonomic comments on M. nola  and related species. The examination of M. nola  and other taxa during the taxonomic assessment of M. eupteryx  provided support for some further taxonomic changes. Hall & Harvey (2002) cited the additional patch of CASAbout CAS in the tergite 7 observed in M. margaretta (White, 1843)  as unique among the species of Mesene  . The study of the abdomen of M. eupteryx  and M. nola  revealed the presence of the typical Mesene  distribution of CASAbout CAS in M. eupteryx  (i.e. CASAbout CAS in tergites 4, 5, and 6), however, an additional patch of CASAbout CAS in the tergite 7 was observed in M. nola  . In additional dissections of specimens of Mesene  available at the DZUPAbout DZUP, an additional patch of CASAbout CAS in the tergite 7 was also observed in M. philonis Hewitson, 1874  , a species placed in the “ phareus  ” species group by Hall & Harvey (2002). Those authors probably mistook the identity of M. philonis  with an undescribed taxon with similar wing pattern, but with the genitalia and CASAbout CAS pattern typical of members of the “ phareus  ” species group (Dolibaina & Dias, pers. obs.). Disregarding M. philonis  , a species widely distributed from the Amazon basin to eastern Brazil, Jauffret & Jauffret described M. lecointrei Jauffret & Jauffret, 2008  from Pará  , Brazil. The distribution, wing pattern and morphology of the male genitalia of M. lecointrei  and M. philonis  are identical, and therefore we recognize M. lecointrei  as a junior subjective synonym of M. philonis  (syn. nov.). Nevertheless, Jauffret & Jauffret (2008) recognized the similarity between the male genitalia of M. lecointrei  (i.e., M. philonis  ) and M. nola  , suggesting a close relationship between those species. The morphology of the male genitalia of M. margaretta  ( Hall & Lamas 2007, fig. 7), M. nola  ( Fig. 37View FIGURES 33 – 40) and M. philonis  , with an entire triangular valva, distally narrow, long and pointed, with a slightly upturned tip, projecting over the aedeagus; the presence of two groups of robust spine-like cornuti, one of which divided in two subgroups, with a small patch of tiny spines in the middle; and the presence of an additional patch of CASAbout CAS in tergite 7 indicates that these species are closely related, belonging in the same species group. In contrast, further studies are necessary to access the phylogenetic affinities of M. eupteryx  . 


Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure


California Academy of Sciences