Aphids Injurious to Orchard Fruits, Currant, Gooseberry and Grape Page: 9
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API I)S INJ UIIOUS TO ORCIIAIID FRUITS.
is particularly true of the fall migrants, which appeal' upon the trees
in the fall. These produce the orange-yellow, wingless, egg-laying
fem ales. The males are
winged and similar to the
fall migrants. The summer
forms occurring upon plan- ...
tain are yellowish green. .,.
with brown patches at the . - ,f.
base of the honey tubes. ..
SEASONAL ITISTORY.
The eggs of this species
aire deposited on the apple in
the fall. They are light yel-
low when laid and change".
from green to polished black. ;..
iThev arie placed upon the
twigs, in the anils of the
b)uds, or in crevices in the
bark, but sometimes they
are laid upon the larger
branches. hey l)egin hatch-
ing at about the time the
)lud(ls are breaking in the
I'O. 4.-The rosy aphis: Twisted apple twig re-
spr ing. suiting from injury by this species. (Original.)
rlThe young stem-mother immediately begins feeding upon the
bursting buds, and as the young leaves develop they curl about her.
she begins producing young (fig. , d) at an average of 6 a day.
The stem-mother lives from a month to six weeks.
789-Bull. 80-117-2
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Quaintance, A. L. (Altus Lacy), 1870-1958 & Baker, A. C. Aphids Injurious to Orchard Fruits, Currant, Gooseberry and Grape, pamphlet, 1917; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc96449/m1/9/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.