PYRAUSTIDA&. 209 
the male. The male insect has the antenne elbowed and 
thickened near the middle, acharacter not seen in the female, 
where the antenne are uniform and thread-like. Though 
fairly common the moths are not often seen, as they hide 
among the leaves, but if the vines are shaken they seek and 
find escape in quick flight, and make for the next shelter. The 
insect feeds upon all kinds of grapes, but shows some little 
preference for the thicker leaved varieties. The upper surface 
of the leaves is eaten by the worms, and for this purpose 
the leaves are almost invariably folded in such a manner as 
to bring the upper sides of the leaves together. Fig. 201 
shows the different stages of this insect. 
Fig. 201.—Desmia maculalis Westw ; a, male moth; b, female; c, larva; d, head and 
thoracic segments of same enlarged; e, pupa; /, tip of same enlarged; g, leaf folded 
by larva. From Div. of Entomology, Dep. of Agriculture. 
REMEDIES.—As it is easy to detect the folded leaves the 
caterpillars enclosed in them can be crushed, and if this is 
done carefully and at a time when the insects are not yet 
numerous this remedy is a good one. The treatment with 
arsenical poisons is. not as successful, as the inside of the 
folded leaf can not readily be reached. 
