342 APHIDS OF THE ROCKY MOUNTAIN REGION 
Myzus porosus Sanderson 
Myzus porosus Sanderson, 1901a:205; Hottes and Frison, 1931a:340; Mason, 1940:18. 
Macrosiphum zoorosarum Knowlton and Smith, 1936b:264; Knowlton, 1943b:124 
(synonymy). 
Apterous Summer Vivipara. (Mounted on slide), body immaculate; cauda and cornicle 
pale to slightly dusky; tibiae and antenna beyond base of III more or less dusky. Body length 
1.75-2; across eyes .37-.39; antenna about 2; hind tibia 1.2-1.35-‘‘1.45"; rostrum attaining be- 
tween Ist and 2d coxae. 
Alate Vivipara. (Mounted on slide), body immaculate; antenna beyond base of ITI, tips 
of tibiae and entire tarsi black; cauda and cornicle pale to dusky; tibiae and distal segments 
of rostrum dusky. Body length 1.4-2; across eyes .37-.40; antenna about 2; rostrum attaining 
between Ist and 2d coxae. 
CT RATA Or re ees ” 
Se ] 45-49 - "56" 
‘Ret 80-55 ~"64" Aa TBs Gutsy oe : . oe 
TMC aes Se) a) Sue Gee > R. [ es 
"49" 57 - 65 S€N.12-20 .33-48 sen.5-9 .27430-.37 wee Apt. 
tid. ° 
tae oy 1-12 
Fig. 410. Myzus porosus 
Collections. On roses. Utah: Saint George. Alate and apterous viviparae 
April 26; rare. 
Type. U.S.N.M., No. 5423; M. zoorosarum Knowlton and Smith, U.S.N.M. 
Paratypes of zoorosarum, Knowlton and C. F. Smith Collections. 
Chief Distinguishing Characters. Absence of reticulation on cornicle, num- 
ber of sensoria on antenna (in alate vivipara 13-20 on III and 6-9 on IV, in 
apterous vivipara 6-12 on III) and number of hairs on cauda (2 lateral pairs). 
Myzus solani (Kaltenbach) 
The Foxglove Aphid (Plate VIII) 
Aphis solani Kaltenbach, 1843:15. 
Macrosiphum solani, Theobald, 1913b:127. 
Myzus pseudosolani Theobald, 1922:8; 1926:313; and 1929:338 (synonymy); Patch, 
1928:49; Hille Ris Lambers, 1933:174; Gillette and Palmer, 1934:206; Essig, 1947: 
607. 
Myzus convolvuli (Kaltenbach), (misidentification), Mason, 1940:8, desc. and full 
synonymy. 
Apterous Summer Vivipara. Head yellow; rest of body grass- or apple-green, mottled 
with yellow on dorsum and darker green on sides and around cornicle bases; appendages pale 
with black tips on antennal segments, tibiae and cornicle. Body length 2-2.5; across eyes .47; 
hind tibia 1.5-1.75; hind tarsal II .10-.11; antenna 2.8-3; rostrum surpassing 2d coxa. Hairs 
slightly capitate; .01 on side of abdomen. Cornicle cylindrical, slender, with distinct flange, 
with two cross striations with cross connections, approaching transverse reticulation; cauda 
tapering, rather slender, bearing 3 pairs of lateral hairs. 
5 
Se : 
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cae ARES 
2 > — 0 
is (62- 75) (sen. 8- 13) CY ye, ee EEE OE PA ELLE 
oe 22) 
Pew eaerio::| 
é (enn \ eee 
-60) 
Fig. 411. Myzus solani 
Alate Vivipara. Head and thorax pale yellowish brown; pronotum pale green; area sur- 
rounding base of each ocellus dark; abdomen yellowish apple-green with dusky green lateral 
areas and broken dorsal intersegmental dashes which contain glandular areas; antenna dusky 
except base of III; tibiae sordid with black tips; cauda pale; cornicle pale with black tip; 
wing venation slightly heavy. een ur create same as apterous summer vivipara except for 
differences figured. 
Collections. On leaves of cineraria, gladiolus, potato, tomato, Helichrysum 
sp., lettuce, Leonurus sp., lily and red raspberry (Rubus strigosus and R. laci- 
