The caterpillar lives on its own within a frond of grass, which is curled and closed with strands of silk to form a shelter. It grows to a length of about 1 cm. To us, the caterpillar was indistinguishable from that of the related species Ocybadistes walkeri. Most of these caterpillars we found in Melbourne were Ocybadistes walkeri, and most of them found in Sydney were Ocybadistes flavovittatus.

The caterpillar pupates in its grass shelter.

upper surface
(Specimen: courtesy of the Macleay Museum, University of Sydney)

The butterfly is brown with an orange/yellow pattern on the wings. The male has a black line on the top of each forewing. Underneath, both sexes are yellow tending to brown toward the rear of each wing. When the butterfly is at rest, it often poses with the fore wings vertical and the hind wings horizontal. It has a wingspan of about 1.5 cm.

underside
(Specimen: courtesy of the Macleay Museum, University of Sydney)

Each egg of this species is laid singly on a foodplant. The eggs are off-white and spherical with a flat bottom. They stay white throughout maturation.

The species is found as the subspecies kokoda Evans, 1949, in

and as two further subspecies in Australia :
flavovittatus in

and vesta (Waterhouse, 1932) in the

Further reading :

Michael F. Braby,
Butterflies of Australia,
CSIRO Publishing, Melbourne 2000, vol. 1, pp. 202-203.

Wesley Jenkinson,
Life History Notes on the Narrow-brand Grass-dart, Ocybadistes flavovittata flavovittata (Latreille, [1824])
and the Greenish Grass-dart, Ocybadistes walkeri sothis (Waterhouse 1933) Lepidoptera: Hesperiidae),
Butterflies and Other Invertebrates Club,
Metamorphosis Australia,
Issue 54 (September 2009), pp. 16-20.

Pierre André Latreille,
Histoire Naturelle: Insectes,
in P.A. Latreille & J.B. Godart : Encyclopedie Methodique,
Volume 9, Part 2 (1824), p. 768, No. 114.

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(updated 2 October 2002, 14 August 2024)