Zurobata Walker

Type species: rorata Walker.

Typically, species in this genus have a dark, vinous greyish-brown ground colour with punctate white fasciation, but usually a darker discal mark on the forewing. The hindwing may be extensively tessellated with white. The forewing has an arc of white spots (variously fused, to sometimes completely so) that incorporates much of the anterior part of the submarginal and more distal spots at the apex and on M2. The more distal spot within the marginal zone on M2 is definitive, though the narrow white line to the margin in the next genus may be homologous. Some species have a more uniformly red ground colour, with the broad, white and grey band seen in other genera that extends from the thorax across the base of the hindwing, thence along the forewing costa to its apex. In species where this occurs, it is of even width or expanding from the base to the apex of the forewing, accentuated by the pale mark on M2 at the margin. In other genera with a costal band, this zone tapers towards the apex. In fissifascia Hampson, it is present only as a fine white line that delimits its posterior edge.

In the male abdomen, the apodemes of the basal sternite are somewhat straight, parallel, with a distinct flange that extends into the sternite (also seen in Lophoruza Hampson; p. 106). The eighth segment has a tergite typical of the framed corematous condition, with splayed apodemes converging on a constriction before the tergite expands distally to a rounded or slightly bilobed margin. The sternite is broad, virtually unmodified except for a shallow notch in the distal margin. The genitalia have a saccus that is square or slightly excavate distally. The uncus is slender and may be slightly sinuous, having its greatest curvature over the basal section. The valves have a blade-like process from the distal end of the costa at about two-thirds that extends roughly parallel to the cucullus and for approximately the same length. At the inner part of the base of this process, an oblique ridge extends obliquely basad to the ventral margin and may itself bear a small flap or process centrally or near the costa (e.g. in vacillans Walker).

The full composition the genus has yet to be explored on the basis of this redefinition, but it certainly includes the following Bornean species and Z.  pallidistriga Warren comb. n. (S. Moluccas). Most were incuded in Zurobata by Poole (1989).

The biology of vacillans is described below.