174 APHIDS OF THE ROCKY MOUNTAIN REGION 
Alate Vivipara. Color black to blackish shiny green. Body length 2-2.8; secondary sen- 
soria with narrow margins. Hairs pointed, .03-.04 long, fairly numerous on body and antenna; 
.05-.07, numerous and nearly erect on hind tibia. Cauda parallel-sided, broad, with obtusely 
tapering tip and slight tendency to constriction before base, to approximately tapering, bearing 
3-4 lateral, and 3 dorsolateral hairs on each side and about 4 dorsal ones. Lateral tubercles 
present on pronotum and abdominal I to V and on VII. 
Hosts. Leaves and twigs of Sambucus nigra and sp. also reported from 
Funkia subcordata and Hemerocallis albida and as reported by Borner and 
Hille Ris Lambers (op. cit.), from roots of Rumex obtusifolium and sp. (Not 
recorded from region.) 
Data for above description and figures were obtained from descriptions by 
Theobald (op. cit.) and van der Goot (op. cit.) and from study of apterous 
viviparae determined by Hille Ris Lambers. 
Aphis sambucifoliae Fitch 
The Elder Aphid 
Aphis sambucifoliae Fitch, 1851:66; Davis, 1910d:490; Essig, 1917:342; Gillette and 
Palmer, 1932b:441. 
Fundatrix. Same in color as summer vivipara. In measurements slightly longer in body 
and shorter in appendages as compared with summer vivipara. 
Apterous Summer Vivipara. New-born Young. Rather bright light green with tan head; 
appendages colorless with blackish tips. Adult. Blackish green with dusky bands on terminal 
segments of abdomen; powdery patches on lateroventral margins of most abdominal segments, 
white tessellations on abdominal VI and VII of occasiona! individuals, especially in alati- 
form apterae; appendages dusky brown to blackish. Body length 2-2.5; hind tibia 1-1.25; 
antenna 1.4-1.8. 
rT os a aR ar 
Fig. 199. Aphis sambucifoliae 
Alate Vivipara. Alatoid Nymph. Tessellated dorsally and ventrally. Adult. Head and 
thorax black; abdomen blackish green; tibiae dusky with black tips; antenna, cornicle and 
cauda blackish. Body length 2-2.3; hind tibia 1.2; antenna 1.3-1.5; rostrum rather slender, 
attaining 3d coxa. Hairs very short and inconspicuous. Lateral tubercles large, especially on 
prothorax. Cauda broad and blunt, with slight constriction near base, with 6 lateral and dorso- 
lateral pairs of hairs. 
Ovipara. Apterous. Olive-yellow, mottled with darker color. Body length 1.30; antenna 
.75; cauda .05 on median line. Hind tibia swollen throughout and covered with numerous 
sensoria. 
Male. Alate. About the same as alate vivipara except abdomen with dusky dorsal bands 
and lateral areas on all segments. Body length 2; antenna 1.40. 
Collections. On twigs and leaves of Sambucus pubens. Colorado: Greeley, 
Fort Collins and Manassa. Fundatrices April 24 and May 2, apterous summer 
viviparae May 31 to Oct. 5, alate viviparae May 31 to Oct. 16, sexuales Oct. 5 
to 16; fairly common. 
Cotypes. U.S.N.M. 
This species has been considered by some as identical with A. sambuci 
Linnaeus but Theobald (1927:95) and van der Goot (1915:231) mention sensoria 
on antennal IV and V as 0 to 1, while all our forms observed have several 
sensoria on IV and V, very rarely one or none on V. Cornicle in cur form is 
