256 APHIDS OF THE ROCKY MOUNTAIN REGION 
Alate Vivipara, Color same as in aptera except head and thorax which are darker. Body 
length 1.4; antenna 1.70; hind tibia .72; hind tarsal II .10; rostrum attaining between ist and 
2d coxae. Other characters as in aptera described above. 
Collections. On leaves of Artemisia filifolia. Colorado: Denver. Alate and 
apterous viviparae Aug. 27; apparently rare. 
Type. U.S.N.M., No. 52349. Paratypes, Colo. Agr. Exp. Sta. Collection. 
Chief Distinguishing Characters. Short cornicle (.09-.10), long cauda (.17- 
.20, twice as long as cornicle), rostral IV+-V with short needlelike tip and shape 
of hairs (funnel-shaped, with short stalk). 
Capitophorus fragaefolii (Cockerell) 
The Strawberry Aphid 
Myzus fragaefolii Cockerell, 1901:101. 
Capitophorus fragaefolii, Hottes and Frison, 1931a:283. 
Capitophorus potentillae (Walker), (misidentification), Gillette and Palmer, 1934:153. 
Capitophorus fragariae (Theobald), Thomas and Jacob, 1941:107; Hodson, 1937:409 
(discussion of synonymy). 
On Fragaria sp.: 
Apterous Summer Vivipara. Pale yellowish or white; appendages pale; slightly dusky 
distally on appendages. Body length 1.25-1.30; hind tibia .76; hind tarsal II .09; antenna 1.60, 
III .40-.45, IV .22-.26, V .25-.29, VI .10-+.50-.55; cornicle .40-.46; cauda .12 on median line, 
.15 on side; rostral IV-+V .11 long, attaining 2d-3d coxa. Frontal tubercles well-developed, 
twice as high as vertex. Hairs strongly capitate; numerous and conspicuous on entire body; 
on vertex .04; on antennal I, II and III conspicuous .02-.03, on IV and V inconspicuous and 
015; on hind tibia moderately capitate .01 long. Cornicle cylindrical, slightly curved, with 
slight flange and imbricated. Cauda tapering, with tendency to constriction near base, with 2 
pairs of lateral hairs and a single dorsal preapical one. 
Wise PRO ote (23 Siena 628-32 ETE, Qn Rose 
(.50 ~ 70) 
pV 
ew = pt: (50-60) 
C0..25 tpeis (Alate -30 - 4-2) 
AGI 28 30. cca ae A7 
Fig. 305. Capitophorus fragaefolii 
Alate Vivipara. Head and thorax dark; abdomen light green with dark dorsal patch and 
lateral areas; antenna dark, secondary sensoria tuberculate and numerous on III. Hairs shorter 
than in aptera. Otherwise same as aptera. 
Male. Alate. Color as in alate vivipara except that dorsal patch is replaced by dorsal 
bands on all abdominal segments. Body length 1.20; antenna 1.40-1.65; mumerous sensoria 
present on III, usually on IV, always on V; cornicle .22. 
Ovipara. Apterous. Same as same form on rose, described below. 
Collections. On leaves and stems of Fragaria sp. Colorado: Fort Collins 
and Golden. Arizona: Jerome. Alate viviparae (numerous spring migrants 
from rose) May 21, apterous summer viviparae April 27, July 16, and Dec. 17, 
alate viviparae Dec. 17, oviparae Oct. 24, males Oct. 17; often abundant and 
injurious. 
Type. U.S.N.M. 
On Rose: (Shown in figure). 
Fundatrix. Color as in summer apterous vivipara. Body length 1.90; hind tibia .70; 
antenna .95, III .30, IV .14, V .16, VI .10+.18, III and IV partially coalesced; cornicle .35. 
Otherwise as in summer apterous vivipara. : 
Apterous Summer Vivipara. Pale green; appendages pale to slightly dusky. Body 
length 1.9-2; hind tibiae 1-1.1; hind tarsal II .10; antenna 1.6-2:12; rostrum obtuse, hardly 
attaining 2d coxa. Hairs as in form described on Fragaria. Ocular and lateral tubercles 
present. 
Alate Vivipara. Head and thorax blackish; abdomen light green with dark dorsal patch 
and lateral areas; antenna dark; tibiae pale to dusky; cornicle and cauda pale. 
