SUBFAMILY APHINAE 163 
ing black, fading into brownish laterally and anteriorly; cornicle black; antenna dusky to 
black; cauda and legs yellowish to slightly dusky. Body length 1.80-2; other parts as in alate 
vivipara. Hairs pointed, drooping; .01 long on body and antennal III; .02-.03 long on hind 
tibia. Dorsal integument smooth. Cauda rarely longer than broad, rounded, wartlike with 
slight neck, bearing three curved bristles or hairs on either side. Lateral tubercles vestigial. 
Collections. On bark of twigs and branches of peach (Prunus persica) and 
on roots of young trees shipped in. Colorado: Fremont, Delta, and Mesa coun- 
ties. Utah: Brigham, Provo, Perry, Orem, Spanish Fork and Farmington. 
Idaho: Declo and Twin Falls. Apterous viviparae Mar. 13 to June 22 and Oct. 
24, alate viviparae Mar. 29 to June 27, also Dec. 29; not common. 
Chief Distinguishing Characters. Shining black to brownish body, short 
wartlike cauda, length of antenna (as long as body), tuberculate sensoria and 
their presence and number on III, IV and V of alate vivipara (40 or more on 
III and 20 or more on IV) and habitat on bark of branches and roots. 
Aphis phaceliae Gillette and Palmer 
(Plate V, 8-11) 
Aphis phaceliae Gillette and Palmer, 1929a:26 and 1932b:430. 
Fundatrix. Color same as summer aptera or with more mottling of green, but pale poster- 
iorly to abdominal IV. Body length 1.76; antenna .70, III and IV coalesced; hind tibia .70; 
cauda .12 on side. 
Sen. 7-12 
2G Ques guy 
20 —28 
Dia = 
14519 _1O-NE 
Fig. 184. Aphis phaceliae 
Alate Vivipara. Head and thorax black; abdomen pale apple-green with dorsal dashes 
and median line darker green and with dusky lateral patches anterior to cornicles and at bases 
of cornicles, also with slight median dashes or bands posterior to cornicles; entire antenna, 
cornicle, tarsi, and tips of tibiae black; cauda yellowish; anal and genital plates dusky. Body 
length 1.20-1.33; hind tibia .66-.80; antenna .83-1, secondary sensoria not tuberculate; rostrum 
attaining abdominal II. 
Apterous Summer Vivipara. Head pale rusty yellow; rest of body pale yellowish green 
or canary-yellow mottled with bluish green anterior to abdominal IV; cauda pale yellow; 
cornicle black; legs pale with tarsi and tips of tibiae blackish; antenna pale. Same in meas- 
urements as alata except as figured. Hairs pointed, drooping, .02-.03 long on body and antenna. 
Cauda elongate, parallel-sided, with slight constriction or neck near base, bearing 3 hairs on 
each side. Lateral tubercles present on prothorax and abdominal I and VII. 
Ovipara. Apterous. Color same as apterous vivipara except for large pale areas where 
eggs show through body wall and hind tibia which is brownish, slightly swollen on proximal 
half. 
Collections. On leaves and stems of Phacelia sp. Colorado: Fort Collins, 
Bellvue and Boulder. Fundatrix April 15, apterous summer viviparae June 1 
and 7 and Sept. 22, alate viviparae May 16 to June 7, oviparae Sept. 22; not 
common. 
Type. U.S.N.M., No. 41466. Paratypes, Colo. Agr. Exp. Sta. Collection. 
Chief Distinguishing Characters. Length of rostral IV+V (.15), 2d fork of 
media of fore wing (arising at half, often more, of distance from margin of 
wing to Ist fork), number of sensoria (7-12) on III of alate vivipara, constancy 
of sensoria on IV in alate vivipara, length of cauda (on median line shorter 
than hind tarsal II), length of rostrum (attaining abdominal II), and presence 
of sensoria occasionally on III of the apterous vivipara. 
