New species of genus Breyeriana Orfila, 1957 (Lepidoptera: Cossidae: Hypoptinae) from Argentina

A new species of Cossidae from southern Argentina is described and illustrated: Breyeriana patagonica Penco, Yakovlev & Naydenov sp. nov . The status of the genus Breyeriana Orfila, 1957, has been confirmed. The specimens were compared with the type material of B. cistransandina deposited in the collections of Museo de La Plata (MLP), MACN, Zoologische Staatssammlung, Munich (ZSM), and Natural History Museum, London (NHMUK). The pictures were made with camera Sony DSLR-A100K and edited with Adobe Photoshop CS. The dissection of genitals was performed using Digital Microscope U500X, 1.3 MPx. After making the images, the genitals were conserved in small vials pinned, attached with the specimens.


Introduction
described a new genus and species, Breyeriana cistransandina based on a series of 30 specimens from southern Argentina and Chile (Neuquén, Rio Negro and Mendoza provinces in Argentina, and Río Maule in Chile). Gentili (1989) made a diagnosis of B. cistransandina among others Cossidae from Patagonia, and add Chubut province in the geographical distribution. Also described his fly period (since endings of december to meddle february) and characterized the phytogeographical region where it dwell, which comprises the patagonian steppe and transition into patagonian forest. Schoorl (1990) mentioned genus Breyeriana Orfila, 1957 as a synonym of Hypopta Hübner, 1818 based on apomorphies of thoracic structures, a feature not reliable which has been a problem across Schoorl´s work (Edwards et al. 1999;Yakovlev 2007;Davis, Gentili-Poole & Mitter 2008;Penco, Yakovlev & Witt 2016). Later, Donahue (1995) recognized Breyeriana separated of Hypopta, not accepting Schoorl's view.
Herein we describe one new species of Breyeriana.

Materials and methods
The new species was found in the collections of the Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" (MACN) and the Instituto de Microbiología y Zoología Agrícola (INTA), Laboratorio de Description. Male. Head: forehead and vertex ash grey; color of antenna rod and palpi scaling grey with scattered black scales; tips of palpi darker, antenna bipectinate, crest process four times longer than antenna rod diameter. Thorax covered with long ash grey hairs, mixed with scarce creamy and black hairs; patagia grey with blurry black thin lines; terminal portion of scutellum II with black hairs forming a defined transverse and curved band which separates thorax from abdomen chromatically; postnotum II with short creamy white hairs; firsts two segments of abdomen ends with long dark hairs mixed with grey dorsally, forming two blurry transverse bands; both sides of abdomen with long white hairs, the rest of abdomen grey with scarce brown hairs; anal tuft short, darker than the rest of abdomen, with grey and black hairs; ventral surface whiter than dorsum, uniform, in the same white tone of hind wings; fore femur and tibia uniformly grey with long hairs; tarsal segments intercalated in creamy-grey and black. Wingspan: 36 mm; Fore wing: length from base to apex: 16−17 mm, ground color whitish with some disperse dark scales basally and discally, turning grey postdiscally, with three dark blurry stripes, formed by sparse grey scales, dark hazel brown and black scales: one parallel to costa, from the base on Sc and R1+R2 and to the end of the cell, the second parallel to the dorsum, joining 1A and not reaching the postdiscal area. The third blurry band lighter than the others, curved lightly inwards, begin at end of the cell from M3 to the subapical area and reaching the vein R5. Veins marked with black; medial veins with a white thin fringe at both sides, interspaces of veins ash grey, darkening at the apex. The marginal end of veins from R3 to Cu1A widening in triangular shape. The cilias are long and interleave by grey and white fringes, being the grey ones at the end of the veins, continuing the size of the wider side of the triangular marks. Ventral view: White from base to medial area, ash grey from cell to apex. The only band repeated from the dorsal view is the blurry one until the subapical area, blurry band widening and be defined over the veins; veins marked in black and ended in a triangular shape on margin; cilias ash grey; Hind wing: triangular, uniform white with nacarated reflex; veins and margin marked with thin hazel brown color; edge with long white cilias. Ventral View: uniformly white at base and cell, clear grey the rest of the wing with marked veins in black.
Female unknown. Distribution. Argentina: Rio Negro, Neuquén and Chubut provinces (Fig. 8), found in the phytogeographic provinces of low monte and patagonian steppe (Burkart et al. 1999). Orfila, 1957 Diagnosis. B. patagonica is well distinguished from B. cistransandina by its smaller size and wing pattern (in B. patagonica, cell is white coloured with few sparced grey and brown scales, in B. cistransandina, it is ash grey with dark black and brown cuneiform bands at the cell and interspaces of veins) and by the genital structures (in B. patagonica, the valve is apically rounded, its abdominal and dorsal edges are almost smooth; there is a mastoid harpe in the medium third of the valve, there is a small strongly sclerotized tubercle in the medium third of the sacculus, while in B. cistransandina, there is a strong cut in the medium third of the abdominal edge of the valve, and no harpe). Additionally, it is obvious that the genus Breyeriana Orfila, 1957 is not a synonym to Hypopta Hübner, 1818 (type species − Hypopta ambigua Hübner, 1818) (Fig. 4, 7). In the type species of the genus Hypopta, male genitals have significant distinctive characters: the robust lamellar transtilla processes with jagged abdominal edge, also the phallus in Hypopta ambigua is tubular and straight.

Figure 8. Distribution map of Breyeriana
Etymology. The name refers to be native of the patagonian region, in southern Argentina.