i 62 Bulletin No. 133. ‘ i I
OTHER INSECTS ATTACKING APPLE. A.
Besides the species mentioned a number of others of less im- j
portance occur at times on the trees and some of the more common
` ’ of these are mentioned below. It will be noted that we have nearly g
i all of the important apple pests occurring in the country. The apple
I I maggot (Trypetu pommiclla) of the New England States has not, _»
however, been observed here, excepting as its work is sometimes
noticed in fruit brought to our market.
The Yellow Swallow—tail Butterfly (Papilio glaucus) is common _ g
everywhere in the State. Its larva sometimes occurs on apple, but —¤
1 has never been troublesome. i
The Ursula Butterfly (Basilarchia astyunax). The adult is _
often seen, but the 'larva is practically unknown. ,
I The Zebra Caterpillar (Mamestra. picta). The caterpillar is . _
common at times on various low—growing plants, alsike clover —
among others. f
Balsa. mulaua. A small gray moth which is rather common in
‘Kentucky. The larva gnaws apple leaves.
The Winter Moth (Erauuis tiliuriu). Not very common in lg
Kentucky at any time.
l The Io Moth (Automcris io). This handsome moth produces ‘
i ' a green worm with branched stinging hairs, which is rather com-
mon on corn in Kentucky. It is now and then seen eating apple
The White-lined Morning Sphinx (Dcilcphila liucatu). This .
fine hawk—moth is common about flowers of evenings in Kentuclq.
Its larva feeds on purslane and is said at times to attack apple.
The Eyed Hawk Moth (Paouias cmcuccatus). A large reddish
brown hawk moth with eyed hind wings. The larva is somewhat
like the tobacco worm in shape. It is not common. ` _
THE APPLE TXVIG-BLIGHT. gh?
(Due to Bacillus umylovorus). i M
When apple trees are growing rapidly in the spring a sudden
blighting of the tips of twigs occurs that soon leaves the trees with I
numerous tufts of dead leaves, the rest continuing green and seem- p
' ingly in good condition. The disease is known as twig—blight be- t