330 Mr. F. Walker’s Descriptions of Aphides. 
The winged male. It pairs with the wingless female at the 
end of October: it is slender, dull pale greenish yellowy and thickly 
covered with gray powder : the head, the disc of the chest, and 
that of the breast are dark gray, and the abdomen has a row of 
dots on each side and one of short bands along its back of the same 
colour : the feelers are black, dull yellow at the base, and a little 
longer than the body : the mouth and the legs are pale yellow; 
the former has a black tip ; the knees, the feet, and the tips of 
the shanks are black ; the hind-legs are dark gray : the wing-ribs 
are pale yellow, and the wing-brands are pale brown. 
I have counted above twenty young ones of various size in one 
wingless female, which form, with its winged descendant, abounds 
from the middle of May till the middle of June. During the 
following months the species disappears from the beech-leaves 
with the exception of a very few little Aphides whose growth 
seems to be retarded. The second epoch of A. Fagi is October, 
the only season for the assemblage of all its forms, when the vi- 
viparous and oviparous females and the males swarm together, 
and this remark will apply to most other species of Aphis. 
Fifth Group. 
7. Aphis antennataj Kaltenbach, Mon. Pflan. i. 115. 88. 
The viviparous winged female. The body is stout and thick, 
and of a bright grass-green colour : the head is broad : the front 
has a small spine in the middle, and a short spine on each side at 
the inner base of each feeler : the eyes are dark and prominent : 
the mouth is green, and hardly reaches the base of the middle 
legs ; its tip is black : the feelers are black, rather stout, and 
much longer than the body ; the first and the second joints are 
green, and rather thick ; the fourth joint is shorter than the third ; 
the fifth is longer than the fourth ; the sixth is hardly one-fourth 
of the length of the fifth ; the seventh is slender, setaceous, and 
longer than any of the preceding joints : the nectaries do not 
rise above the surface of the abdomen : the legs are long, green, 
pubescent, and rather stout; the shanks are rather darker and 
much longer than the thighs ; the hind shanks are nearly twice 
the length of the hind thighs ; the knees and the tips of the feet 
are darker than the shanks : the wings are colourless and much 
longer than the body ; the wing-brand is black and nearly half 
the length of the whole wing ; the veins are brown ; the third 
branch is divided before one-third, and subdivided before two- 
thirds of its length. 
Length of the body IJ line; of the wings 5^ lines. 
The viviparous wingless female. Dark brown, broad, short. 
