SUBFAMILY APHINAE 169 
Collins. New Mexico: Rociada. Apterous summer viviparae May 14 to June 23 
and Sept. 2, alate viviparae May 14 to June 21, sexuales Oct. 3*; quite common 
and troublesome. 
Cotypes. U.S.N.M. 
Chief Distinguishing Characters. Short blunt cauda, retracted tip of ab- 
domen, median protuberance on anal plate, smooth cornicle, flat and incon- 
spicuous sensoria few in number, bright red nymph and effect on the host 
(causing tightly curled leaves). 
Aphis roripae (Palmer) n. comb. 
The Yellow Cress Aphid 
Cerosipha roripae Palmer, 1938:354. 
Apterous Summer Vivipara. Pale to medium green; anal plate, cauda, rostrum and ap- 
pendages brownish; cornicle pale. Body length 1.2-1.8; across eyes .35-.40; antenna 1.10, five- 
segmented; hind tibia .75-.95; rostrum attaining between 2d and 3d coxae. Hairs pointed, 
nearly erect and rather numerous on hind tibia; .05 and sparse on body. Cornicle cylindrical 
or slightly broadened at base, with very slight flange; cauda broad, parallel-sided, bearing 4 
lateral pairs of hairs. 
Alate Vivipara. Head and thorax dark; abdomen pale to medium green; appendages, 
anal plate, cauda and rostrum brownish; cornicle pale. Body length 1.50-1.60; across eyes 
.40; antenna 1.15; hind tibia .85-1; rostrum attaining 2d coxa. Hairs nearly erect. Otherwise 
as in apterous vivipara except as figured. 
Middle of 
hind i ee eee 
Fig. 192. Aphis roripae 
Collections. On stems and leaves of Yellow Cress (Roripa hispida). Colo- 
rado: Glenn Haven (near Estes Park). Alate and apterous viviparae June 21; 
apparently rare but abundant where found. (Host rarely observed.) 
Type. U.S.N.M., No. 52351. Paratypes, Colo. Agr. Exp. Sta. Collection. 
Chief Distinguishing Characters. Five-segmented antenna, relatively short 
cornicle (less than half III), long unguis (longer than III) and the usual pres- 
ence of sensoria on III of apterous vivipara. 
Aphis rosea (Baker) 
The Rosy Apple Aphid (Plate VI) 
Aphis sorbi Kaltenbach (misidentification), Sanderson, 1902:149; Simulyan, 1916:7. 
Aphis pyri Boyer de Fonscolombe (misidentification), Gillette and Taylor, 1908:31. 
Aphis meee Fitch (misidentification), Baker and Turner, 1916d:325; Smulyan, 
1918:2 
Anuraphis ccs Baker, 1921a:95; Theobald, 1927:294. 
Aphis rosea, Gillette and Palmer, 1932b :437. 
Fundatrix. Head black; rest of body rose-pink to very dark green to purplish brown or 
almost black with tinge of orange-red on abdominal VI and short dusky dashes in VII and 
VIII; covered with slight powder; femora and tibiae black distally; antenna blackish except 
base of III; cornicle and cauda black. Size 2.50 by 1.75; hind tibia .90; antenna 1.30; cornicle 
.30. Otherwise same as summer aptera. 
Apterous Summer Vivipara. Amber to salmon or rose-pink to rosy brown to dark green; 
base of each cornicle often with reddish or dusky spot which may unite to form a band; 
covered with slight pulverulence which gives a purplish tinge. Size 2.25 by 1.50; hind tibia 1; 
antenna 1.85; rostrum obtuse, IV+V slender, attaining between 2d and 3d coxae. A pair of 
dorsal tubercles on head and abdominal VII and VIII. Young. First instar, pale yellow; later, 
purplish, with orange-yellow cornicles and band of same color between cornicles; legs pale 
with tarsi black; antenna pale on proximal half, blackish on distal half. 
*Hottes and Frison (1931a:214) report oviparae May 13. 
