168 OWLET-MOTHS. 
side being interrupted towards the head. When the larva 
has reached its full size it leaves the cane, ete. which it had 
occupied and descends a little below the surface of the 
ground, where it transforms to a brown pupa, from which 
the moth emerges from about the end of August to the 
Fig. 167 —Gortyna nitela Gu. From Div. of Entomology, Dep. of Agriculture. 
middle of September. The moth is of a general mouse-gray 
color, with a light band on each fore-wing. It, and the 
caterpillar, is shown in Fig. 167. 
There is no known remedy for these insects in the fields; 
‘in case the plant infested in an orchard is a valuable one we 
have to remove the caterpillar with the knife. 
THE WHITE-DOTTED APPLE-WORM. 
(Nolaphana malana Fitch). 
This moth (Figs. 168 and 169, Plate VIII.) is fairly 
common in Minnesota, although its larva was not observed 
upon the tree it infests until the last season, when late in 
autumn it wasso numerous in some iso- 
lated cases as even to cause some injury. 
The worms were found of nearly all sizes 
as late as September 15th, eating reg- 
\ ~ 
ea 
Fig. 168—Nolanhana ular notches in the margins and holes in 
malana Fitch. . . - 
the middle of the leaves of the apple. 
Each caterpillar feeds alone, and is well hidden on the under 
side of the leaf, which is usually somewhat bent and hollow. 
It is a rather thick, cylindrical, light whitish-green worm, 
i 
oe 
