SUBFAMILY APHINAE 135 
Rist Canyon (near Bellvue), Lyons, Sparks and Owl Canyon (in Larimer Coun- 
ty). Idaho: Hollister. Apterous summer viviparae May 30 to Sept. 6, alate vivi- 
parae May 31 to Sept. 6; fairly common. 
Neotype. (Designated by the writer), U.S.N.M. 
Aphis eriophori Walker 
Aphis eriophori Walker, 1848 :46. 
Rhopalosiphum eriophori, Theobald, 1927:65; Hille Ris Lambers, 1934:26 synonym 
Aphis viburnicola Gillette (erroneous synonymy). 
Alate Vivipara, Spring Migrant. Alatoid Nymph. White. Adult. (Cleared and mount- 
ed), colorless with the following parts dark to black: Head, thorax, lateral areas on all ab- 
dominal segments, dashes on I and II and solid patch on II to VIII, antenna, except unguis 
which is lighter, legs, especially knees and tarsi, cornicle, cauda, anal plate. Body length 
2-2.50; across eyes .44; antenna 1.2-1.45; hind tibia, 1-1.10; rostrum nearly to 2d coxa. 
Fig. 148. Aphis eriophori 
Apterous Summer Vivipara. (Cleared and mounted), dusky throughout body and ap- 
pendages. Body 2 by 1-2.3 by 1.2; across eyes .47; antenna 1-1.1; hind tibia .90; rostrum at- 
taining 2d coxa. Body surface posterior to head reticulated and lined with rows of minute 
denticles in both alate and apterous forms. 
Collections. On hollyhock (probably accidental) near Viburnum opulus 
var. sterile the winter host, Cyperus virens* as summer host. Utah: Ogden and 
Providence. Apterous viviparae* on summer host Nov. 1, alate viviparae on 
winter host May 7, fall migrants Sept. 18; rare. 
Type. British Museum. 
Chief Distinguishing Characters. Heavy slightly curved cornicle and 
coarsely denticulated imbrications of the same, denticulated reticulations on 
dorsum of body, shape of cauda and number of hairs (2 pairs and one preapical 
one) on the same, numerous sensoria on III of alate vivipara and their presence 
in aptera and length of tibial hairs (without equalling diameter of tibia). 
Aphis fabae Scopoli 
The Bean Aphid 
Aphis fabae Scopoli, 1763:136 and 139; Jones (M.G.), 1942:67; Jacob, 1945:102 and 
1947 :431. 
Aphis rumicis Linnaeus, Davidson (J.), 1921:81 (misidentification) ; Horsfall, 1925:1; 
Franssen, 1927:16; Theobald, 1927:98; Gillette and Palmer, 1932b:439; Hille Ris 
Lambers, 1934:27. 
Fundatrix. Dark olive-green to black; cornicle, cauda and anal and genital plates black; 
antenna pale on III and IV (coalesced) and base of V, remainder blackish; tibiae pale with 
tips black; tarsi black. Body length 2.10-2.40; antenna .75-.95; cauda .12 on median line; 
rostral IV+V .12, attaining 2d coxa. Hairs on hind tibia .06-.08 long, numerous. 
Apterous Summer Vivipara. Dark olive-green to sooty black; cauda, anal and genital 
plates and cornicle black; appendages mostly pale, distal half of rostrum dusky. Dorsal sur- 
face of body smooth or slightly reticulated. Body length 1.8-2.20; hind tibia 1.05; antenna 
1,40. 
Alate Vivipara. Alatoid Nymph. Blackish except meso- and metathorax which are pale 
green; abdomen tessellated, with 4 dorsal rows of powdery spots. Adult. Same in color and 
measurements as aptera. Rostrum obtuse with IV-+V rather slender, attaining 2d to 3d coxa. 
Secondary sensoria not tuberculate. Hairs pointed; on tibia numerous, tibia appearing hairy. 
Cornicle cylindrical or slightly tapering, with flange and finely imbricated. Cauda cylindrical 
*Taken in Berkeley, California, Nov. 1 by E. O. Essig. 
