SUBFAMILY APHINAE 155 
tips; anal plate blackish. Body length 1.4-1.6; across eyes .34; hind tibia .70-.93; antenna 
.85-1; rostrum reaching 2d coxa. Otherwise as in apterous vivipara. 
Collections. On leaves and stems of Roripa obtusa, R. hispida, R. sinuata 
and R. sp. Colorado: Fort Collins and Pingree Park. Utah: Salt Lake and 
Locomotive Springs. Alate and apterous viviparae April 10 to Oct. 30. 
Chief Distinguishing Characters. Number of sensoria on III of alate vivi- 
para (usually more than 12), number of lateral pairs of caudal hairs (not more 
than 2-3) and length of rostral IV-+V (.10). 
Aphis neilliae Oestlund 
Aphis neilliae Oestlund, 1887:59; Gillette and Palmer, 1932b:422, 
Fundatrix. Same as apterous summer vivipara except as follows: Antenna .60-.63, 
III and IV coalesced; hind tibia .60; cornicle .09. 
Send (240 +I fused) Apt. Pets 
Toke go ad ay: Viv eet 
ie ANACOMUT Tee SD SAHARA awueUS Di a. 16- Es acraia mae 
sen 25~ 37 9 14-23 ot etat Cig a 
teas OPT, S60} ONG Sp meegheiacaons OSOC FTI 
EAS =. =the th xO -2e 16.2 Sen. 7-15 a R 
Alate Viv 
hae 
var ae 
Fig. 174. Aphis neilliae 
Apterous Summer Vivipara. Dark olive-green to black, sometimes mottled with lighter 
green; rostrum, cornicle, cauda and anal plate blackish; tibiae pale with black tips. Body 
length 1.3-1.8 width .8-1; hind tibia .80-.95; hind tarsal II .10; antenna .90-1.1; rostrum at- 
taining between 2d and 3d coxae. Hairs pointed; erect and rather numerous on hind tibia and 
sides of body. Cauda broadly tapering, bearing about 5 pairs of lateral hairs. Small in- 
dividuals, possibly apterous sexuparae taken in late summer measured .85-.90 in length; hind 
tibia .45; antenna as in ovipara. 
Alate Vivipara. Same as aptera except as follows: Antenna 1.10-1.20, secondary sensoria 
conspicuously tuberculate. Hairs pointed, slightly longer than diameter of antenna or tibia, 
semierect to erect, fairly numerous on tibiae. Lateral tubercles large on prothorax and ab- 
dominal I and VII. Fore wing with 2d fork of media usually nearer the margin than third of 
the distance to Ist fork. 
Ovipara. Apterous. About the same as apterous vivipara except as follows: Body more 
elongate, length 1.20-1.50; antenna .70; hind tibia with proximal third slightly swollen and 
bearing 1-8 rather large faint sensoria. 
Male. Apterous. Body length about .90; hind tibia .45; cornicle .05; antenna .70. 
Collections. On leaves and stems of Physocarpus monogynus. Colorado: 
Fort Collins, Boulder, Manitou and Rocky Mountain Natienal Park. Idaho: 
Murtaugh and Wendell. Fundatrices April 16, apterous summer viviparae June 
2 to Aug. 25, apterous sexuparae (?) Aug. 11 to 31, alate viviparae June 2 to 
June 15, oviparae Sept. 15 and Oct. 29; a single aptercus male Oct. 29; rather 
common. . 
Cotypes. Univ. of Minn. Collection. 
Aphis neogillettei Palmer 
Aphis cornifoliae Fitch (‘‘other collections”), Gillette and Palmer, 1932b:394, line 20. 
Aphis neogillettei Palmer, 1938:352. 
Fundatrix. Same as summer apterous vivipara except antenna shorter, .65-.75 long, 
III and IV coalesced; otherwise as in ovipara. 
Apterous Summer Vivipara. Dark olive-green; appendages pale yellow, with antennal 
VI, tarsi, tips of tibiae, cornicle and cauda blackish. Body length 1-1.40; hind tibia .50-.70; 
antenna 1.05; rostrum attaining 3d coxa. Hairs on hind tibia fine, erect. Lateral tubercles 
large. 
Sexuparae (?). Apterous. Same as summer aptera except as follows: Body smaller, .90- 
1.10 long; antenna .75 long, III and IV coalesced. 
