STATE AGRICULTURAL SOCIETY. 
333 
APPLE. LIMBS. 
and where any wound in the bark is healing, and in autumn com¬ 
mon also in the axils of the leaf stalks towards the ends of the 
twi^s; sometimes so multiplied, in European countries, as to cover 
the whole under sides of the limbs, and also the trunk, the tree 
appearing as though it were whitewashed; preferring trees whose 
fruit is sweetest. 
Under each small patch of down is commonly one large female 
and her young. The female is about 0.06 long, egg-shaped, dull 
reddish brown, with a black head and feet and dusky legs and 
antenna}. She is dusted over with a white mealy powder, and has 
a tuft of white down growing upon the hind part of her back, 
which is easily detached. See Harris’s Treatise, p. 193. 
affecting the leaves. 
Puncturing them and extracting their juices• 
18. Apple aphis or plant louse, Jfphis Mali, Fab. (Homoptera Aphid ®.) 
[Plate I, fig. 1, the male, fig. 5, the female.] 
Small green lice without wings, accompanied by a few black 
and green ones having wings, crowded together in vast numbers 
upon the under sides of the leaves and the green succulent tips of 
tlie twigs, the leaves becoming distorted hereby and turned back¬ 
wards, often with their tips pressing against the twig from whence 
they grow. 
The winged individuals with a black thorax and a green abdo¬ 
men, having a row of black dots along each side, and pale legs 
with black knees and feet. Length 0.05 to the tip of the abdo¬ 
men. The wingless individuals slightly larger, with the thorax and 
abdomen green, the legs pale, with black feet. See Trans. N. Y. 
State Ag. Society, 1854, p. 753. 
19. Apple-leaf Aphis, Aphis Malifolia, Fitch. 
Found with the preceding on apple trees in Illinois; distin¬ 
guished from it by being slightly larger and having the abdomen 
as well as the thorax black, the second fork of the wing veins 
at its tip nearer to the end of the fourth vein than it is to the end 
of the first fork, and other differences in the wing veins. See 
Trans. N. Y. State Ag. Society, 1854, p. 760. 
