46 APHIDS OF THE RoCKy MOUNTAIN REGION 
2.1-3; antenna 1.2-1.6; rostrum attaining middle of abdomen. Hairs fine; on hind tibia num- 
erous, length less than diameter of tibia. Young. Newborn, straw-yellow with colorless ap- 
pendages. 
Alate Vivipara. Same as aptera except as follows: Secondary sensoria rather large, often 
irregular in size, somewhat tuberculate; hairs on hind tibia .05-.07 long, length about equal 
to diameter of tibia. Fore wing with media twice-branched. 
Male. Alate. Similar to alate vivipara, but somewhat smaller in all measurements and 
sensoria present on antenna, as figured. 
Ovipara. Same as apterous vivipara except body length which is 3-5 and hind tibia which 
bears sensoria as figured. 
Egg. Black, naked; size 1 by .47. 
Fig. 42. Cinara schwarzii 
Collections. On Pinus ponderosa var. scopulorum, on bark of twigs and 
small branches, in colonies; eggs laid on needles in rows, end to end, lengthwise 
of the needle. Colorado: Generally. Utah: Mount Nebo and Beaver Canyon. 
Fundatrices Apr. 8 to May 18, apterous summer viviparae June 18 to Nov. 8, 
alate viviparae June 18 to Oct. 7, sexuales Oct. 9 to 27; very common. 
Type. U.S.N.M. 
Chief Distinguishing Characters. Short numerous drooping tibial hairs, 
brown to black body, absence of orange color in legs and straw-yellow color 
of newborn young. 
Cinara sibiricae (Gillette and Palmer) 
The American Juniper Aphid 
Fig. 43. Cinara sibiricae 
