SUBFAMILY APHINAE 183 
dusky markings on abdomen: Lateral areas, blotch at cornicle base, a dorsolateral row of ir- 
regular spots, dorsal bands on abdominal VII and VIII, and median broken spot on V and VI, 
venter of abdominal I, anal and genital plates. Body length 1.65-2; hind tibia 1; antenna 
1.30-1.65, secondary sensoria convex and tuberculate; rostrum attaining between 2d and 3d 
coxae. Hairs pointed, not numerous. Cornicle cylindrical or slightly tapering, with flange and 
with imbrications slightly denticulate. Cauda parallel-sided, obtuse, with but slight tendency 
to constriction, bearing 4-5 hairs on each side. Lateral tubercles present on prothorax and 
abdominal I and VII. 
Male. Alate. Body length 1.30-1.50; hind tibia .85; antenna 1.40, secondary sensoria 24 on 
III, 8 on IV, 5 on V; cornicle .12. 
Ovipara. Apterous. Body length 1.30; antenna .78-.95; cornicle .14; hind tibia slightly 
swollen and bearing about 10 faint sensoria. 
Collections. On leaves and stems of Valeriana edulis. Colorado: Log Cabin 
(west of Livermore), Cherokee Park, Pingree Park, Rocky Mountain National 
Park, Grand Mesa, Gunnison, Lost Lake (at Crystal Mountain), Steamboat 
Springs and Fort Collins. Apterous viviparae June 30 to Sept. 6, oviparae Sept. 
6, males Sept. 26; not rare. 
Neotype. U.S.N.M. 
Chief Distinguishing Characters. Usual though variable presence of rather 
numerous tuberculate secondary sensoria on III, IV and V of alate and often 
on apterous vivipara, slightly denticulate imbrications on the cornicle, dark 
green body and tessellated alatoid nymph and short unguis (shorter than III). 
Aphis varians Patch 
The Variable Currant Aphid 
Aphis varians Patch, 1914b:50 and 1927:4; Gillette and Palmer 1932b:452. 
Same as given for A. neomexicana Cockerell excepting slightly more 
numerous secondary sensoria on antenna of alate vivipara and longer and rather 
more numerous and more erect hairs. Another difference is the effect on the 
host, namely curling of leaves. 
‘ R Apt. Vir 
ey (XStream pce 
g Apt. 23-\.32 See Tie eC NE 
D ° —\. X 3 a 
we yee 1-22230" Seti, 58-15" Sen, 0-4 sen'o-2" 
ei) DOF) OOS ee h dol Gora Oa pt 
= ALGO? 23-31 6 =22 AA OO= ABS Y 
’ fl K 
SANG dare ss ress Alate Viv 
7Nb [\ re Apt. 25-38 
Fig. 211. Aphis varians 
Collections. In curled leaves of golden currant (Ribes aureum), black cur- 
rant (R. nigrum) and gooseberry (R. sp.). Colorado: Fort Collins and Rabbit 
Ears Pass. Idaho: Beaver Canyon. Utah: Generally in northern half of the 
state. Apterous summer viviparae May 26 to Aug. 29, alate viviparae May 26 to 
July 25; not very common. 
Cotypes. Maine Agr. Exp. Sta. Collection. 
