274 PESTS OF ORCHARD AND SMALL FRUITS 
Since the larve are conspicuous and are not numerous, hand picking 
is feasible. Arsenical poisons, such as Paris green or arsenate of 
lead, may be used if desired. 
Fic. 389.— Larva of the Abbott's Sphinx. Original. 
The Plum-tree Sphinx (Sphinx drupiferarum 8. and A.) 
Large, green caterpillars are sometimes in evidence on the foliage 
of plum trees, devouring the leaves. They are naked worms, two 
inches or more in length, 
the body marked on each 
side with seven diagonal 
dashes of narrow white 
bordered with purple. 
On the hind end is a 
conspicuous spine. The 
adults are strong-flying 
moths, seen hovering 
over flowers in the eve- 
ning. The pupal stage is 
passed in the soil. There is one generation annually. Hand picking 
is the usual remedy, but arsenate of lead or Paris green may be used 
on the foliage if desired. 
Fie. 390.— Adult Plum-tree Sphinx. Slightly 
reduced. Original. 
The False Army-worm (Calocampa nubera Lint.) 
In recent seasons, cranberry foliage has been severely injured by a 
large caterpillar, two inches long when full grown, dark green in color, 
