SUBFAMILY APHINAE 325 
Macrosiphum solanifolii, Patch, 1907:235 and 1911:81; Gillette and Palmer, 1934:195. 
Macrosiphum gei (Koch), (misidentification or disputed synonymy), Theobald, 1926: 
108; Hottes and Frison, 1931a:306; Hille Ris Lambers, 1933:170 (discussion of 
synonymy). 
Macrosiphum euphorbiae, Gillette and Palmer, 1934:178; Hille Ris Lambers, 1939:84. 
Fundatrix. Medium green with head yellowish; all appendages pale with tips of antennal 
segments and of cornicle and tibiae dusky. Cauda pale to sordid. Body length 3; hind tibia 
1.60; antenna 2; cauda .35 on median line, .40 on side. 
Apterous Summer Vivipara. Pink or pale green; cauda and legs pale, with tips of tibiae 
dusky; tarsi black; antenna pale with tips of III, IV, V and entire VI dusky; cornicle pale 
with dusky tip. Body length 2.8-3; across eyes .50-.55; hind tibia 2.2-2.3; antenna 3-4; ros- 
trum surpassing 2d coxa. Hairs blunt to silghtly capitate; on side of abdomen .03. Cauda 
tapering, without noticeable constriction and bearing 4-5 pairs of lateral hairs and 1-2 dorsal 
preapical ones. 
Alate Vivipara. Same as apterous vivipara except as follows: Head and thoracic lobes 
pale yellowish; cornicle pale only at base; antenna pale only on I, II and base of III; tips of 
tibiae black. 
Ovipara. Apterous. Same as apterous vivipara except as follows: Antenna mostly dusky; 
hind tibia blackish on slightly swollen proximal two-thirds which portion bears numerous 
sensoria; length of body 2.90; hind tibia 1.50-1.60; cauda .25 on median line, .30 on side; 
rostral IV+ V .12. 
Male. Alate. Head and thorax black; abdomen with dusky bands and lateral areas; 
antenna black beyond base of III, I and II lighter; cornicle and cauda dusky; legs sordid or 
brownish. Body length 1.80; hind tibia 1.90-2; antenna 3.50; cauda .13-.17 on median line, 
.17-.20 on side, bearing 4 pairs of lateral and frequently 2 pairs of dorsolateral hairs and one 
preapical one. 
(70 -.8/) F_.A6-.63 rasa a rerncscere reer ee 
Wenn” (1.00 - 1.10) 
(15-19) 
Fig. 389. Macrosiphum solanifolii 
Collections. Winter hosts, on leaves and stems of Rosa sp., Agrimonia sp. 
and Potentilla sp. and possibly other Rosaceous plants; summer hosts, on leaves 
of Amaranthus sp., Apocynum sp., Aquilegia sp., Armoracia sp., Asclepias spe- 
ciosa, Castilleja sp., Cineraria sp., Cornus sp., pumpkin and squash (Cucurbita 
sp.), Echinocystis sp., Epilobium sp., Eriogonum alatum, Euphorbia marginata, 
Geranium sp., Gladiolus sp., Helianthus sp., Helichrysum sp., Humulus lupulus, 
Iva sp., Lactuca sp., Malva sp., Penstemon sp., pea (Pisum sativum), Polygonum 
sp., poppy, potato, raspberry, Radicula sp., currant (Ribes sp.), Rumezx sp., 
Senecio sp., Sonchus sp., and tulip. Throughout region. Fundatrices April 1 to 
23 on rose; apterous summer viviparae May 12 to July 19 on rose; alate vivi- 
parae May 12 to July 19 and Oct. 24 on rose, May 13 to Nov. 4 on summer hosts 
(all months of the year in greenhouse); oviparae Oct. 20 to Nov. 1 on rose; 
males Oct. 13 to Nov. 19 on either host; very common. 
Cotypes. Apparently lost. S. euphorbiae Thomas II]. Nat. Hist. Surv. Collec- 
tion. ; 
Chief Distinguishing Characters. Length of reticulated area on cornicle 
(.15-.20, same length as hind tarsal II), number of sensoria on III (2-6 in ap- 
terous, 10-18 in single row in alate vivipara), length of rostral IV-+V (.15), 
character of cauda (tapering and bearing 4 pairs of lateral and frequently 2 
pairs of dorsolateral hairs). 
