THE LARGE MARBLED TORTRIX (_Sarrothripa revayana_).
This is a most variable species, ranging from greyish white through various
shades of brown to blackish; the grey and the {147} brown forms are
sometimes tinged with green. In the illustration some of the more usual
forms of marking are shown. 1 (more or less typical) and 2 are the most
common; 5 (_ramosana_) is less frequently met with; 4 (_ilicanus_) has ashy
brown fore wings with a black bar at the base, three black dots on the
disc, and a series of black dots before the outer margin, the triangular
marking on the front margin is reddish; 3 is a modification of the typical
form approaching var. _dilutana_; 6 is of the _afzelianus_ form, with shiny
brownish fore wings and black markings.
[Illustration: FIG. 23.