Magneuptychia flavofascia Zacca & Siewert

Zacca, Thamara, Siewert, Ricardo R., Mielke, Olaf H. H. & Casagrande, Mirna M., 2014, A new species of Magneuptychia Forster, 1964 (Lepidoptera: Nymphalidae: Satyrinae) from Brazilian Savanna, Zootaxa 3795 (1), pp. 71-77 : 72-77

Magneuptychia flavofascia Zacca & Siewert , n. sp.

( Figs 2–20 )

Type material. Holotype male with the following labels (separated by transverse bars): / HOLOTYPUS / Magneuptychia flavofascia Zacca & Siewert det. 2013/ Parque do Gama, Brasília, [47º53’W, 15º 56’S], D[istrito] F[ederal], 1000m, Brasil, 17.VI.1972, Mielke & Brown leg./ DZ 29.352/ ( DZUP). Allotype female with the following labels (separated by transverse bars): /ALLOTYPUS/ Magneuptychia flavofascia Zacca & Siewert det. 2013/ Br[asília], [Distrito Federal], 12.IX.1968, ex-coll. H. Ebert/ DZ 29.354/ ( DZUP).

Paratypes. BRAZIL—Distrito Federal: Brasília — 16.XII.1968, 2 females, ex-coll. H. Ebert, DZ 26.484, DZ 29.355 ( DZUP); 12.IX.1968, 1 male and 1 female, ex-coll. H. Ebert, DZ 29.358, DZ 29.353 ( DZUP). Mato Grosso: Diamantino — Alto Rio Arinos, Faz[enda] S[ão] João, 3.IX.1978, 1 female, Mielke & Furtado leg., DZ 29.359 ( DZUP); 4.IX.1977, 1 male, 300–400m, E. Furtado leg., DZ 29.360 ( DZUP). [unknown locality], no date, 1 male, ex-coll. H. Ebert, DZ 29.356 ( DZUP); BP [unknown locality], 1 male, II.1968, ex-coll. H. Ebert, DZ 29.357 ( DZUP).

Diagnosis. Magneuptychia flavofascia n. sp. can be distinguished from the others members of the genus by the presence of two rufous bands on both wings under side, the first one on discal region and the other on post-discal region; a creamy band on post-discal region on both wings under side; forewing under side with a developed ocelli in M1-M2 and CuA1-CuA2, a reduced ocellus in M2-M3 and other smaller and silver in M3-CuA1.

Description. Head. Brown. Post-genal area light brown. Eye hairy, dark brown. Antennae brown, laterally white scales around the base of each flagellomere. Labial palpus mixed with brown and light brown, with elongated scales at first and second segment; about two times total length of eye; third segment thin and longer than first segment, second segment robust ( Figs 6–7 ). Thorax. Uniformly brown. Legs with coxae, trochanter and femur light brown, tibia and tarsus brown; male proleg with femur, tibia and tarsus the same length ( Fig. 8 ) and female with five tarsomeres and spines in the tarsomeres II, III and IV ( Fig. 9 ). Forewing, size and shape. Length: 15–17 mm (n = 10). Triangular, costal margin convex, apex rounded, outer margin convex, tornus rounded, inner margin straight. Forewing upper side ( Fig. 2 ). Brown. Forewing under side ( Figs 3 , 10 ). Ground color light brown with inner margin lighter. Narrow rufous band on discal area and other thicker on post-discal area in R-2A. Post-discal thick band creamy from R to 2A. Submarginal band dark brown from R to CuA2. Ocelli developed in M1-M2 and CuA1-CuA2 with two white pupils, one reduced in M2-M3 with one white pupil and other smaller silver in M3-CuA1 without pupils. Submarginal line dark brown irregular. Marginal line dark brown and straight. Fringes light brown. Hind wing shape. Costal margin convex, apex rounded, external and inner margins straight. Hind wing upper side ( Fig. 2 ). Subapical ocellus in CuA1-CuA2 with a white pupil, submarginal and marginal irregular dark brown line from Rs to anal margin. Hind wing under side ( Fig. 3 ). Similar to forewing under side. Ocelli developed in M1-M2 and CuA1-CuA2, two reduced and silver in M2-M3 and M3-CuA1, and other smaller in Rs-M1. Submarginal line irregular. Marginal line straight. Fringes light brown. Abdomen. Dorsally dark brown, ventrally light brown.

Male genitalia ( Figs 12–18 ). Tegume dorsally convex, subtriangular in lateral view. Uncus two times the length of tegume, laterally with a large base tapering at the apex, dorsally spatulated. Gnathos narrow and curved upwards with 2/3 the length of the uncus. Appendix angular developed. Anterior projection of saccus developed, cylindrical, almost same length of uncus. Valvae subrectangular covered by setae, apex rounded and dorsal projection with smaller teeth at apical third. Aedeagus slightly longer than the valvae and robust, anterior portion asymmetric, ventrally posterior portion bipartite, cornutus present.

Female genitalia ( Figs 19–20 ). Tergum VIII sub-squared, distal portion less sclerotized than basal portion. Papillae anales sclerotized at basal portion, recovered by setae at distal portion. Anterior apophysis absent. Sterigma rectangular and sclerotized in ventral view, not fusioned to sternum VIII. Bursa copulatrix totally membranous, with a pair of signa ventrally; ductus bursae about two times length of bursa copulatrix.

Variation. The ventral surface of both wings shows some variation in intensity of the color and thickness of creamy submarginal band, probably associated with seasonal forms of this species. Individuals collected on June (winter) presents this submarginal band more conspicuous than individuals collected on November (summer). Intraspecific variations in wings phenotype has been observed in others Euptychiina species (see Braby 1994; Freitas 2007; Freitas et al. 2010; Siewert et al. 2013).

Etymology. The specific epithet is formed by the combination of two words from Latin, flavo and fascia, referring to the color of band present on both wings in ventral surface.

Distribution. This species currently is known only from Midwest Brazil (Distrito Federal and Mato Grosso) ( Fig. 35 ).

Host plant. Unknown.

Discussion. This species is placed in Magneuptychia due to its close affinities to M. libye ( Figs 21–34 ), the type-species of genus, by the following characters: eyes hairy; forewing with dcm concave, m-cu dilated at base and 2A sinuous at base; hind wing upper side with a subapical ocelli in CuA2-2A; uncus seen laterally with a large base tapering at the apex, seen dorsally spatulated; gnathos narrow and curved upwards; anterior projection of saccus developed and cylindrical; cornutus present. The wings phenotype differs mainly from M. libye and others Magneuptychia species by the presence of one narrow rufous band in basal region of ventral wings surface and other similar in post-discal region follows by a creamy conspicuous band with variable thickness. Morphological genital structures have been shown an important feature to delimitation of the Satyrinae genera and distinction between taxa. Species of Magneuptychia (except M. iris , M. lea , M. tiessa and M. tricolor ) have a similar morphological pattern of tegumen, uncus and gnathos, but differs mainly in valvae and aedeagus shape, including the cornutal patch. The valvae of M. flavofascia n. sp. resembles to M. pallema with a dorsal dentated projection, but these species can be easily distinguished by the aedeagus and wings phenotype. M. flavofascia n. sp. present a developed and sclerotized sterigma similar to M. ocnus , M. iris , M. lea , M. tiessa and M. tricolor , but this structure is absent in M. libye and others Magneuptychia .

In addition to the differences founded in the morphology of M. flavofascia n. sp. and M. libye the sympatric distribution also reinforce the identity of both species, which leads no doubt about a possible phenotypic variation or geographic races of M. libye . So far, it seems likely that M. flavofascia n. sp. is restrict to Brazilian Savanna, but more collected effort is necessary to know the real distribution of this species.

Figures

FIGURE 35. Geographical distribution of Magneuptychia flavofascia n. sp. Grey area in Brazil represents the Cerrado biome.

FIGURES 2 – 5. Magneuptychia flavofascia n. sp. 2 – 3. Holotype male, dorsal and ventral. 4. Allotype female, dorsal and ventral. 5. Summer form, dorsal and ventral.

FIGURES 6 – 20. Magneuptychia flavofascia n. sp. 6 – 7. Labial palpi: 6. Male, 7. Female. 8 – 9. Forelegs: 8. Male, 9. Female. 10 – 11. Wings venation: 10. Male, 11. Female. 12 – 18. Male genitalia: 12. Lateral view, 13. Inner view of right valvae, 14. Dorsal, 15. Ventral, 16 – 18. Aedeagus: 16. Dorsal, 17. Lateral, 18. Ventral. 19 – 20. Female genitalia. 19. Lateral, 20. Ventral.

FIGURES 21 – 34. Magneuptychia libye. 21 – 22. Labial palpi: 21. Male, 22. Female. 23 – 24. Forelegs: 23. Male, 24. Female. 25 – 26. Wings venation: 25. Male, 26. Female. 27 – 32. Male genitalia: 27. Lateral view, 28. Dorsal, 29. Ventral. 30 – 31. Aedeagus: 30. Dorsal, 31. Lateral, 32. Inner view of right valvae. 33 – 34. Female genitalia. 33. Lateral, 34. Ventral.