330 APHIDS OF THE ROCKY MOUNTAIN REGION 
Alate Vivipara. Same as apterous vivipara except as follows: rostrum attaining between 
2d and 3d coxae; hairs on hind tibia .04, not exceeding length of diameter of tibia and other 
differences as shown in figures. 
Collections. On leaves and stems of Valeriana edulis, Rudbeckia sp. and 
Epilobium angustifolia. Colorado: Log Cabin, Laramie River, Pingree Park, 
Cameron Pass, Grand Mésa. Utah: Mount Timpanogos and Monticello. Apterous 
summer viviparae July 26 to Aug. 24, alate viviparae Aug. 4 to Nov. 16; rather 
common and in large colonies, but host seldom observed. 
Type. Lost. 
Chief Distinguishing Characters. Dark brown body and blackish to black 
appendages and cornicle and dusky cauda and anal plate, number. of sensoria 
on III (not more than 10 in apterous, or 20 in alate vivipara), long cornicle 
(ranging somewhat longer than III and exceeding 4-5 times length of hind 
tarsal II), short rostral IV+-V, slight enlargement of cornicle just before reticu- 
lated area and the rather short extent of the reticulation, (about one-ninth of 
length of cornicle) and length of cauda (on median line 2-3 times length of hind 
tarsal II). 
Macrosiphum wasintae (Hottes) 
Adactynus wasintae Hottes, 1933:19. 
Macrosiphum wasintae, Gillette and Palmer, 1934:200; Hottes, 1948a:31. 
Apterous Summer Vivipara. Pale dull green; antenna pale to tip of III, dusky beyond; 
cornicle dusky beyond proximal third; cauda greenish; tibiae light brown. Body length 
1.37-1.7; across eyes .46-.48; hind tibia 2-3; antenna 3-3.6; rostrum attaining 3d coxa. Hairs 
blunt; on side of abdomen .02 and sparse. Cornicle slender, imbricated, without reticulation 
but with one stria next to flange. Cauda parallel-sided to tapering, bearing about 3 lateral 
and 1-2 dorsolateral hairs on each side and a single dorsal preapical one. 
Ovipara. Apterous. About the same as apterous vivipara except as follows: Body length 
1.7-2; antenna about 3; cornicle .50-.55; hind tibia with proximal fourth very slightly swollen 
and bearing scattered sensoria. 
Male. Alate. Body length 1.50; across eyes .45; antenna 2.60; cornicle .40; hind tibia 
1.60-2.00; cauda .10 on median line, .15 on side. 
5 
(63 — 76) 
(6520) (70-99) C 
Ha. = A aR aS (60-70) 
aie J SD 
Fig. 396. Macrosiphum wasintae 
Collections. On leaves of Potentilla fruiticosa. Colorado: Grand Mesa. Ap- 
terous summer viviparae Aug. 4; rare and difficult to find on account of solitary 
habit on underside of leaves. 
Holotype. U.S.N.M. Paratypes, Hottes and Colo. Agr. Exp. Sta. Collections. 
Chief Distinguishing Characters. Pale green body with pale cornicle, cauda 
and anal plate, absence of reticulation on cornicle, length of cornicle (hardly as 
long as IV and shorter than 5 times hind tarsal II), number of sensoria on III 
of aptera and rather short cauda (shorter than 3 times hind tarsal II or rostral 
IV+V). 
Macrosiphum yagasogae Hottes 
Macrosiphum yagasogae Hottes, 1948b:34 and 1949b:55 (description of male). 
Apterous Summer Vivipara. Pale brownish yellow; with cornicle, cauda and appendages 
pale except tips of. tibiae and of rostrum and entire antennal VI and tarsi which are dusky. 
