Amiga arnaca adela Nakahara & Espeland

Nakahara, Shinichi, Lamas, Gerardo, Tyler, Stephanie, Marin, Mario Alejandro, Huertas, Blanca, Willmott, Keith R., Mielke, Olaf H. H. & Espeland, Marianne, 2019, A revision of the new genus Amiga Nakahara, Willmott & Espeland, gen. n., described for Papilioarnaca Fabricius, 1776 (Lepidoptera, Nymphalidae, Satyrinae), ZooKeys 821, pp. 85-152 : 99-100

Amiga arnaca adela Nakahara & Espeland subsp. n. Figs 2 i–l, 3d, 6

Description and diagnosis.

MALE: forewing length 19-21 mm (n = 5): Differs from the nominotypical subspecies in the following respects: broad, faint, iridescent bluish-lilac reflection between the ventral forewing postdiscal band and the umbra is absent (but see also below).

FEMALE: forewing length 21-22 mm (n = 4): Differs from the nominotypical subspecies by the same ventral forewing character provided for the male.

Variation.

As explained under the variation section under the genus, the absence of the bluish-lilac reflection on the ventral forewing is consistent in specimens from western Colombia and western Ecuador. However, this character appears in a few specimens from Panama, Costa Rica, and Nicaragua (e.g., FLMNH-MGCL 208036, 257145, 263067), although the degree of reflection is variable.

Types.

HOLOTYPE ♂: // ECUADOR: Esmeraldas, W Maldonado–Selva Alegre rd., El Cerro 235 m, 0°58'22"N, 78°55'19"W 21, 25.vii.2011, K. Willmott, & J. Hall FLMNH-MGCL-151127 // DNA voucher LEP-09931 // (FLMNH, to be deposited in INABIO). (Fig. 2k).

Other examined specimens

(244 ♂, 104 ♀). See Appendix for the data of these specimens. These specimens are not included in the type series as labelling will likely not be completed for over 300 specimens.

Etymology.

This species-group name is based on the Greek adjective “adelos”, meaning “indistinct” or “inconspicuous”, in reference to its lack of bluish reflection on the ventral forewing. This species-group name is treated as a Latinized feminine adjective in accordance with the feminine generic name.

Distribution

(Fig. 6). This subspecies occurs from Nicaragua to western Ecuador.