Argyrophorus rubrostriata Pyrcz, Cerdeña & Florczyk, 2019

Pyrcz, Tomasz W., Gutiérrez, José Cerdeña & Florczyk, Klaudia, 2019, Two remarkable new species of Argyrophorus Blanchard from the Peruvian high Andes (Lepidoptera, Nymphalidae, Satyrinae), Zootaxa 4656 (2), pp. 375-383 : 377-381

Argyrophorus rubrostriata Pyrcz, Cerdeña & Florczyk , n. sp.

( Figs. 1 G–J, 2A, 3A, 4G)

Type locality. Escalón , Cordillera Negra, Ancash, Peru .

Type material. Material examined: HOLOTYPE ♂: PERU, Depto. Ancash, Escalón, 4100–4150 m, 10. VI .2019, T. Pyrcz leg., to be deposited in MUSM; PARATYPES (54 ♂ and 20 ♀) : 35 ♂ and 10 ♀: same data as the Ho- lotype; 19 ♂ and 10 ♀, same locality , 20. VI.2018, leg. T. Pyrcz, P. Boyer, J. Cerdeña, J. Farfán, prep. genit. ♂ 1384_ 03.09.2018 /K.Florczyk, prep. genit. ♀ 1381_ 09.11.2018 /K.Florczyk, prep. mol. 458/ 26.06.2018, prep.mol. 459/ 26.06.2018; in MUSM, MUSA, PBF, CEP-MZUJ .

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Diagnosis. Most similar, in size, wing shape and dorsal colours to A. lamna , except for the reddish overcast of the FWV surface, and different configuration of the HWV black stripes, in the latter respects most similar to Argyrophorus idealis n. sp.

Description. MALE ( Figs. 1G, H ): Head: eyes chocolate brown, naked; palpi twice the length of head, dorsally black, laterally light grey, covered with grey and black hair; antennae to half costa, entirely covered with scales, dorsally brown and steely grey, ventrally snow white, club darker, spoon like, composed of 9–10 segments. Thorax: dorsally black, covered with dense, chestnut hair, ventrally blackish grey; legs grey brown. Abdomen: dorsally and laterally chestnut, ventrally light grey. Wings: FW length 18–22 mm; apex blunt, outer margin straight or slightly concave; HW oval with a smooth outer margin; fringes brown, longer on the HW. FWD: Shiny silver, except for a narrow, brown marginal line turning wider towards apex, and two minute subapical dark brown dots. HWD: Dark brown, glossy, heavily hairy in basal half, in most (fresh) specimens 5 red intravenal stripes in submarginal area. FWV: brownish red except for medium brown marginal area and golden yellow costa; a series of four black submarginal oval spots, with>shaped distal and basal golden yellow patches; a narrow, blackish brown marginal line. HWV: ground colour medium brown; a series of zigzagging black lines extending from costa to anal margin, postbasal, postmedian and submarginal; a series of elongated submarginal dots, each in every cell bordered basally and distally with yellow; a thin, black marginal line parallel to outer margin; all the veins marked with light grey.

MALE GENITALIA ( Fig. 2A ): Tegumen dorsal surface humped; uncus stout, one and third the length of tegumen, with a sharp tip curved downwards; gnathos slender, half the length of uncus; pedunculus prominent four-fifths the length of gnathos; vinculum slightly arched, same length as from tegumen anterior edge; saccus rather short, same length as pedunculus; valvae elongate, two times the length of tegumen dorsum, same width throughout, with a slightly irregular costa, a prominent basal cavity, and a blunt tip; aedeagus the length of tegumen+uncus, tubular, slender, anterior entrance half the length of entire aedeagus, no apparent serration.

FEMALE ( Figs. 1I, J ): Sexual dimorphism slight (FW length: 20–22 mm), females are generally paler and lighter colour on both the dorsal and ventral surface.

FEMALE GENITALIA ( Fig. 3A ): Papillae anales flattened in lateral view, extremely pilose, apophyse posterior prominent, wide and terminated in a blunt tip, approximately the length of papillae width; lamellae postvaginalis forming a wide hoop, partly enclosed from above by two wide flaps; ductus bursae wide and short, weakly sclerotized gradually opening into bursa with ductus seminalis emerging from basal part of ductus bursae; corpus bursae oval with two prominent signa approximately two-thirds the length of bursae.

Etymology. This species epithet is a composite of latin“rubrus”—red, and “striata”—striped, and is an allusion to the reddish stripes on the HWD.

Bionomics. Argyrophorus rubrostriata occurs in well-preserved puna covered with abundant grasses, mostly Stipa (4H). It flies over sunny, relatively dry slopes and does not penetrate into shadowy gullies and humid valleys, similarly to A. idealis and contrary to A. angusta . Adults are active during the hottest and sunniest parts of late morning, after 1 PM their activity nearly ceases. It is a very common species in the right type of habitat, and several dozens can be observed within minutes. It was found at 3800–4200 m.

Figures

FIG. 1. Adults: A. Argyrophorus idealis n. sp. male, HOLOTYPE, dorsal; B. Argyrophorus idealis n. sp. male, HOLOTYPE, ventral; C. Argyrophorus idealis n. sp. female, PARATYPE, dorsal; D. Argyrophorus idealis n. sp. female, PARATYPE, ventral; E. Argyrophorus idealis n. sp. female (individual form), PARATYPE, dorsal; F. Argyrophorus idealis n. sp. female (individual form), PARATYPE, ventral; G. Argyrophorus rubrostriata n. sp., male, HOLOTYPE, dorsal; H. Argyrophorus rubrostriata n. sp., male, HOLOTYPE, ventral; I. Argyrophorus rubrostriata n. sp., female, PARATYPE, dorsal; J. Argyrophorus rubrostriata n. sp., female, PARATYPE, ventral

FIG. 2. Male genitalia (in lateral view, aedeagus extracted in lateral and ventral view). A. Argyrophorus rubrostriata n. sp.; B. Argyrophorus idealis n. sp.

FIG. 3. Female genitalia (in lateral view). A. Argyrophorus rubrostriata n. sp.; B. Argyrophorus idealis n. sp