340 APHIDS OF THE ROCKY MOUNTAIN REGION 
Apterous Summer Vivipara. Yellow-brown; cauda pale; cornicle and tibiae brownish; 
antenna dusky beyond middle of III. Body length 1.25-1.43; across eyes .36; hind tibia .70- 
-75; hind tarsal II .07; antenna 1.3-1.8; rostrum surpassing 2d coxa. Cornicle somewhat 
stout, distinctly swollen on distal half; closely imbricated. Cauda tapering, bearing 2 pairs of 
lateral hairs. Hairs blunt, inconspicuous, as in alate vivipara. 
Alate Vivipara. Head and thorax dark; abdomen yellow-brown; antenna dusky beyond 
base of III; cornicle and tibiae slightly dusky; cauda pale; wing veins slightly smoky. Body 
length 1.3-1.5; across eyes .35; hind tibia .80-1.03; hind tarsal II .07; antenna 1.7-1.9; rostrum 
surpassing 2d coxa. Hairs blunt, inconspicuous; on side of abdomen not evident. 
By os =30) oS 
Hd. Ti. 
\ \ aa 
(30) (Ser-!-6) (26-28) 
Fig. 408. Myzus monardae 
Collections. On leaves of Monarda menthaefolia. Colorado: Boulder, Bell- 
vue and Fort Collins. Apterous summer viviparae May 12 to Nov. 6, alate vivi- 
parae May 30 to June 2; not common. 
Type. Univ. of Neb. Collection, No. 160. Paratypes, U.S.N.M. 
Chief Distinguishing Characters. Yellow-brown body with absence of dark 
dorsal patch in alate vivipara, markedly swollen cornicle, rather short unguis 
(about same length as III), number of sensoria on III of alate vivipara, usual 
presence of sensoria on IV and absence of the same on V. 
Myzus persicae (Sulzer) 
The Green Peach Aphid (Plate VII) 
Aphis persicae Sulzer, 1776:105. 
Aphis dianthi Schrank, 1801:114. 
Siphonophora achyrantes Monell, 1879:18. 
Myzus malvae Oestlund, 1886:31. 
Myzus persicae, Passerini, 1860:35; Gillette and Palmer, 1908a:32; Gillette, 1908d:359; 
Theobald, 1926:318; Mason, 1940:15 desc. and full synonymy. 
Fundatrix. Young. Newly hatched, dull dark green with appendages sordid to dusky 
brown. Later, after feeding, lighter green tinged with yellowish. Adult. Pale green mottled 
with light salmon; appendages and cornicle pale, blackish at tips. Body length 1.7; antenna 
.80-1.14, III and IV usually coalesced; hind tibia .70-.85. 
Fund. Te 
Nem cD Oo = Co: ae 
AO-d2 
! puree Fa he 
ee 60 
(ee 
ES et OS 3e a fee /0- 189 ae late, 
Maio a rr OOO ry ad a Bs E 
are Bee EE NCEIDR ae Re 
eT | 
v 
ee eee ey TIN FRSRRALS 
30735 ie 
| Leo Sie eS Pa aray © STOSTO SV OHSS ETS CATT SIT IT a IIE re 
(late) 44 40 35 sis AC) 
Fig. 409. Myzus persicae 
Apterous Summer Vivipara. Pale yellow to green, in early summer usually with median 
and lateral longitudinal darker green stripes; dorsum finely rugose; all appendages pale with 
tarsi, tips of tibiae of antenna, of rostrum and of cornicle dusky. Body length 1.86-2; across 
eyes .42; antenna 1.7-2.4; hind tibia 1.08; rostrum attaining between 2d and 3d coxae. Cornicle 
cylindrical to slightly swollen. Cauda tapering, bearing 3 pairs of lateral hairs. Hairs blunt 
to slightly capitate, very short and inconspicuous. 
