Richard South

“ Only four species occur in our islands. Three of these have green fore wings and pale grey or whitish hind wings. The other species, Sarrothripa revayana, has the fore wings of various shades of grey, brown, or blackish; its boat-shaped cocoon is very like a small edition of that of Hylophila bicolorana, and, although the caterpillar is in some respects not very dissimilar to those of the green-winged species, the moth does not seem quite to be one of their set. ”

“ Caterpillar green, sometimes tinged with yellow, a dark line along the middle of the back is edged on each side with whitish.
The chrysalis is pale greenish, with a narrow black stripe from the head along the thorax extending to the fourth abdominal ring; the wing cases reach the sixth ring, which together with the back of the fifth are roughened with fine blackish points.
Cocoon boat-shaped with the keel raised at the head end. When the moth emerges from this end the cocoon closes up tightly again, so that no opening is to be seen; slight pressure on the back will cause the exit slit to open. ”