Vianania australis (Orfila, 1935)

Orfila, R.N. (1935). Lepidoptera Neotropica. II: Dos nuevas especies de
Noctuoidea. Revista de la Sociedad Entomológica Argentina 7: 225-226;
p. 225. Described as Cisthene australis. Translated from the Spanish
original.

Cisthene australis nov. sp. (Lithosiidae).

Head blackish brown, antennae black, tegulae black, shoulders yellow, thorax
black, patagia black.
Fore wing black, with a median cadmium-yellow band dilated over the disc, a
submarginal spot near the apex of subtriangular shape, and a triangular
submarginal dot between Cu1 and Cu2.
Hind wing black with a median excurved band, from the anterior margin to the
inner margin near the anal angle.
Legs black.
Abdomen black, ventrally yellow on segments 2-5.
Wing expanse: 30-28 mm.
Holotype male no. 252, allotype female no. 253 in my collection; 8 paratypes
in coll. Alberto Breyer; 1 paratype in coll. Museo Argentino de Ciencias
Naturales.
Distribution: Tandil, Province of Buenos Aires, Argentine Republic.
It is distinguished from C. ruficollis and C. argentinensis by having the
tegulae black, whereas these have them yellow; by the abdomen dorsally
black, whereas in these it is yellow on segments 2-6 with a very thin black
dorsal line.
This species approaches C. unicincta and C. praxis by its dorsally black
abdomen.