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The situations where it is found are hedge-sides. 
The perfect insect appears in September. 
The caterpillar is marbled greyish and brown, with a 
paleline on each side of the back edged above with darker; 
the side line paler, interrupted, and edged with black. 
The date of the appearance of the caterpillar is in 
June and July. 
It feeds on the ash. 
The chrysalis is found at the roots of trees below the 
earth. 
COSMID2E. 
TETHEA SUBTUSA. 
OLIVE MOTH. 
Plate LX. Figure 1. 
Local ities for this species are York, Sutton-on-Derwent, 
Kingsbury, Bristol, Lewes, Carlisle, Bowdon, Hudders¬ 
field, Exeter, Worcester, Srowmarket, Burtou-on-Trent, 
Manchester, Cambridge, Halton, Birkenhead, Clapham, 
and Hammersmith near London. 
The situations where it is found are woods. 
The perfect insect appears in July and August. 
The caterpillar is yellowish green, with a pale yellow 
line along the back, and another of the same colour on 
either side of it; the side line pale yellowish; the bead 
whitish green, the mouth black. 
The date of the appearance of the caterpillar is in 
April and May. 
It feeds on the aspen and the poplar. 
