238 APHIDS OF THE ROCKY MOUNTAIN REGION 
Amphorophora masoni (Knowlton) 
Neomyzus masoni Knowlton, 1928b:170. 
Amphorophora masoni, Palmer, 1936b:741. 
Apterous Summer Vivipara., ‘‘Bluish green”; cauda pale; cornicle pale with dusky tip; 
antenna beyond base of III and tibiae slightly dusky. Body length 1.8-2.15. Hind tibia 1.60- 
2.15; antenna 3-3.45; rostrum surpassing 2d coxa. Cornicle slightly swollen and with 3 rows 
of reticulations. Cauda tapering and without noticeable constriction. 
Alate Vivipara. Same as apterous vivipara except as follows: Head and thorax dark; 
all tibiae and antenna beyond base of III blackish; hind tibia 1.60-1.90; antenna 2.80-3.35; 
rostrum attaining only 2d coxa. 
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60-80 sen5-8 43-35 44-.60 a 
R Peep EE EO ASIP III 
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13-18 95-110 
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Fig. 280. Amphorophora masoni 
Collections. On leaves of Helianthus sp. Colorado: Boulder and Skyway 
(in Mesa Co.). Utah: Tooele and Toquerville. Apterous summer viviparae Aug. 
8 and Sept. 10, alate viviparae July 22; rare. 
Cotypes. U.S.N.M. and Knowlton Collection. 
Chief Distinguishing Characters. Length of cornicle (not greater than III), 
pale cornicle, slight amount of reticulation and faint or absent imbrications on 
cornicle, length of the cauda (not longer than .30) and number of lateral hairs 
(no more than 3-4 pairs), number of sensoria on III (in alate vivipara 25 or 
more and not in straight row, in aptera not more than 8) and length of rostral 
IV+V (about .13). 
Amphorophora morrisoni (Swain) 
The Long-legged Juniper Aphid 
Nectaros!phon morrisoni Swain, 1918b:8 and 1919:78. 
Amphorophora morrisoni, Mason, 1925:37; Gillette and Palmer, 1934:139. 
Apterous Summer Vivipara. Green; cornicle, cauda and appendages pale. Body length 
1.5-1.9; across eyes .43-.46; hind tibia 1.45-1.50; hind tarsal II .13-.15; rostrum attaining ab- 
dominal I. Hairs blunt or slightly capitate; on side of body .01. Cornicle slightly swollen on 
distal two-thirds and reticulated for about 5 rows at tip; cauda elongate-tapering with 3 pairs 
of lateral hairs. 
Fig. 281. Amphorophora morrisoni 
Collections. On twigs of Juniperus scopulorum. Colorado: Fort Collins. 
Apterous viviparae Aug. 9; very rare. 
Cotypes. Univ. of Calif. Collection, N. EOE 88. 
Chief Distinguishing Characters. Cornicle with distinct reticulation at tip, 
length of cornicle (equal to or exceeding length of III), green body and small 
size (length not over 1.61), short cornicle (not longer than .68), and short III 
(not longer than .65). Also the coniferous host makes it unlikely that this form 
could belong to any of the species infesting non-coniferous plants. 
