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Suana Walker

Type species: ampla Walker ( = concolor Walker)

Both sexes have rufous brown forewings traversed by four darker, usually wavy fasciae. Between the first and second fascia a white discal spot is often present, and the zone between the second and third is tinged greyish. There is sometimes a pale subbasal spot in the male, and the irregularly stepped submarginal has similarly paler patches basad to each section, particularly subapically. The male forewings are shaped as in Metanastria, Streblote and Paralebeda males; those of the females have the dorsum and margin continuously curved and the costa also more curved than in the male, the two curves meeting at the acute apex.

The male antennae are strongly bipectinate, more broadly so over the basal half, those of the female hardly so.

The male genitalia are similar in general structure to those of the genera already discussed but the cubile arms are weakly sclerotised plates forming the interior base of the saccular pouch, and the eighth sternite consists of two sclerotised triangular plates.

The larva was described by Gardner (1941). The prothorax has two well developed lateral protruberances on each side, the other segments a single ventrolateral one. The meso- and metathorax each bear a dark, transverse brush of black, stiff needles, each raised well above the body line and bordered with pale spatulate setae; similar setae fringe the pronotum and adorn the lateral protruberances. There are small verrucae. The skin is pale brownish grey with very fine dark brown reticulation.

The genus contain three species: the widespread concolor Walker, a new Sundanian species and a very dark brown, undescribed species from Sulawesi.

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