Dargida roseilinea (Köhler, 1947) reinst. nom., comb. nov.

(Figs 5–9, 30, 35, 40, 43)

Borolia roseilinea Köhler, 1947: 100.— Poole 1989: 585.

Leucania roseilineoides Poole, 1989: 585; syn. nov., ICZN, Article 59.4.

Diagnosis. Dargida roseilinea most similar and closest ally is D. radiata from which it is distinguished by the dorsal forewing yellowish-beige ground color; paler and narrower brown to pale reddish-pink stripes, placed on and among veins; brown to pale reddish-pink stripe crossing forewing discal cell, distally bifid; forewing disco-cellular median (dcm) and inferior (dci) brown to pale reddish-pink; and a rounded brown to pale reddish-pink spot between M 1 –M 2, just after the end of discal cell. The genital features distinguishing D. roseilinea from D. radiata are given under the diagnosis of the latter.

Redescription. Head: uniformly yellowish-beige; antennae dorsally beige, male with tiny ventral chemoreceptive trichoid sensilla, 1/5 as long as antennal segment width, covering ventral surface of the antenna, and with four transversal rows of lateral chemoreceptive trichoid sensilla (fascicles), almost 2/3 as long as antennal segment width; female with ventral chemoreceptive trichoid sensilla only; labial palpi and eyes as in D. radiata.

Thorax: uniformly yellowish-beige, including patagia, tegulae and legs; epiphysis and pattern of spurs of mid and metatibiae as in D. radiata.

Forewing: male 13.8 mm (n=1), female 14.2 mm (n=1); shape as in D. radiata. Dorsal: ground color uniformly yellowish-beige, with brown or pale reddish-pink stripes covering all veins and intervenal areas, including one along half of discal cell, forked apically; circular brown or pale reddish-pink spot in M 1 –M 2 near end of discal cell; fringe yellowish-beige. Ventral: uniformly yellowish-beige, paler than dorsally.

Hind wing: shape as in D. radiata. Uniformly translucent white both dorsally and ventrally, with a weak infusion of brown at the end of veins on dorsal surface; fringe whitish-beige.

Abdomen: uniformly yellowish-beige.

Male genitalia (Figs 30, 35): as in D. radiata, but uncus longer and distally narrower. Valva with base of clasper almost reaching its ventral margin; corona extending to cucullus ventral margin. Aedeagus with a dorso-lateral diverticulum near base, club like in lateral view, 1/4 as long as aedeagus, smooth, and a second small ventral diverticulum, slightly differentiable, minutely spiculated, and a third dorso-lateral diverticulum, just posterior to the basal one, 1/3 as long as aedeagus, minutely spiculated, bearing thinner cornuti than in D. radiata, cornuti without sclerotized basal area.

Female genitalia (Fig. 40): as in D. radiata but sterigma narrower; appendix bursae longer; corpus bursae shorter, line of signa less developed, dorsal line with five signa, two well developed and three weakly developed, ventral line with only two well developed signa, and lateral lines with six signa, anterior three well developed and posterior three weakly developed.

Etymology. Although not stated by the author, the name most likely is a reference to the dorsal forewing pale reddish-pink stripes on and among veins.

Distribution. Dargida roseilinea is known based on few records from the Sierras Pampeanas mountain ranges, specifically from the eastern side of the Aconquija foothills, Tucumán province, and from the Sierra Grande foothills, Córdoba province, Argentina (Fig. 43).

Type material. The holotype female of Borolia roseilinea Köhler, 1947 and Leucania roseilineoides Poole, 1989 is deposited at the ZSBS, with abdomen removed, without genital label, and with the following labels: / Holotypus [female symbol] Borolia roseilinea Koehler / SIAMBON FEB[ruary]. 1931 / ARGENTINA Prov[ince]. Tucuman Siambón II.1931 Schreiter leg. Coll. P. Koehler / Borolia roseilinea Khl. DET KOEHLER /.

Analyzed material. ARGENTINA: Córdoba: Copina (2 km NO, 31º33’37.51’’S, 64º42’30.40’’W), 1471 m, 1♂ 1♀, 10.II.2016, GSB, A. Zapata & H. Beccacece leg. (UNLPam). Tucumán: Siambón, 1♀, II.1931, Schreiter leg. (holotype, ZSBS).

Comments. Dargida roseilinea was described in Borolia and later combined with Leucania by Poole (1989), rendering it to a junior secondary homonym of Leucania roseilinea Walker, 1862. Consequently, Poole (1989) proposed Leucania roseilineoides as a replacement name for the species. However, the general pattern of the wings and the morphology of the male and female genitalia support B. roseilinea as a member of Dargida (comb. nov.), which makes Leucania roseilineoides its new objective junior synonym (ICZN 59.4).

This species is distributed along Sierras Pampeanas mountain ranges. The localities of Siambón belong to the Calchaquies foothills in the province of Tucumán and Copina to the Sierra Grande foothills in the province of Córdoba. The latter belongs to the Dry Chaco ecoregion, but specimens of Sierra Grande were found on the top of the foothills which are dominated by high-altitude grassland. Martinez et al. (2017) through a track analysis concluded that Cordoba high-altitude grasslands are related to grasslands of Aconquija and Calchaquies foothills based on vascular plants and vertebrates, and this relationship is also supported by the distribution of D. roseilinea.