20 Psyche [April 
DESCRIPTIONS. 
1. A. malifolize Fitch (Rosy Apple Aphis). 
Light to dark green, anterior portion of thorax (first two seg- 
ments as a rule) usually lighter (light green may have a yellowish 
tint); anterior and dorsal aspects of head, antennz, base and 
nearly 4 distal portion of rostrum, legs, apices of cornicles, and as 
a rule two transverse bands or lines at anal end of dorsum, dusky to 
black; the remainder of cornicles often dusky or brownish; eyes 
dull black (in balsam-mounted specimens deep red); as a rule a 
pale median longitudinal line on dorsum of head; often a small 
dusky median spot on the first thoracic segment (in good light 
seen to be interrupted medianly and longitudinally) and one on 
each side of the thoracic segments; caudal end of abdomen ven- 
trally dusky sometimes; dorsum of head and thorax and the whole 
of the ventral surface of the insect more or less pulverulent. 
Newly-hatched specimens are light green as a rule, with head, 
thorax, and posterior portion of abdomen at sides, occasionally, 
pale yellowish-green; appendages similar to head and thorax, 
although the antenne and legs are more often almost colorless; 
eyes deep red. 
Antenne comparatively long and varying in extent from end of 
thorax nearly to bases of cornicles, 
unguis about twice as long as base of 
distal segment, segments as follows: 
IIT .1155-.1386 mm., IV (base) .0539— 
.0616 mm., IV (unguis) .1001—.1309 
mm., III with a distal sensorium and 
base of IV with a distal group composed 
of one large one and several smaller 
ones, II] and IV imbricated but IIT not 
as strongly, III sometimes showing 
faint line of differentiation of future 
segments III and IV, the whole with a 
few short spinelike hairs; cornicles long 
.0770-.0847 mm., broad, cylindrical or 
subcylindrical (in some balsam-mounted 
Fig. 1—Antenna and corni- _ snecimens distinctly tapering), flanged 
cle of Aphis malifolie Fitch, ; : : : 
about 5150. Z at apices, often in part weakly imbri- 
