The white pine aphid, C. strobi (Fitch), occurs from New England to the Lake 
States and Carolinas and feeds on eastern white pine. Winged forms are almost 4 
mm long. The body 1s shiny dark brown, with a white stripe down the middle of the 
dorsum and white powdery spots on the sides, and it bears long stiff hairs. 
During the fall, winged aphids lay their eggs end to end along the needle. As 
many as 27 may be found on a single needle, although 5 or 6 are generally more 
common. Hatching occurs in the spring, and wingless females produce living 
young which live in colonies up to 75 or 100 mm long clustered around a branch or 
the leader. Several generations later, winged females are produced and they migrate 
and also produce living young. Toward the fall, winged males and females mate, 
and a new crop of overwintering eggs 1s laid. Young trees or individual branches of 
large trees may be killed by heavy infestations or their growth may be seriously 
reduced. 
Cinara sabinae (Gillette & Palmer), a small yellowish species about 3 mm long 
and covered with a white powdery secretion, feeds on redcedar in the Eastern 
United States. Colonies are usually found on twigs and small branches. Heavily 
infested trees often become unsightly as a result of black mold developing in 
honeydew on the foliage. The related species, C. canadensis Hottes & Bradley and 
C. juniperivora (Wilson), also feed on redcedar. 
Cinara pinea (Mordwilko) is a large reddish-brown species with numerous dark 
specks and a pair of large spots behind the cornicles. It has been recorded feeding 
on young Scotch, red, and Virginia pines. Additional pine-infesting species of 
Cinara include C. atlantica (Wilson) on loblolly, shortleaf, Virginia, slash, long- 
leaf, pond, sand, and spruce pines in the South, and Scotch, pitch and Table 
Mountain pines in the North; C. taedae Tissot on loblolly, Virginia, slash, sand, 
spruce, pond, Table Mountain, and pitch pines; C. watsoni Tissot on loblolly, 
shortleaf, slash, spruce, pond, red, Scotch, Virginia, sand, jack, pitch, and Table 
Mountain pines; C. pinivora (Wilson) on loblolly, slash, Virginia, shortleaf, sand, 
spruce, pond, pitch, red, jack, and Table Mountain pines; and C. pergandei 
(Wilson) on loblolly, Virginia, shortleaf, sand, spruce, pitch, and jack pines. C. 
pergandei is perhaps the most common bark aphid on Virginia pine. Pine-infesting 
aphids that attack the needles include Eulachnus rileyi (Williams), the powdery 
pine needle aphid, on Scotch, red, pitch, Virginia, shortleaf, loblolly, slash, and 
eastern white pines; FE. agilis (Kaltenbach) on red, Scotch, Austrian, and eastern 
white pines; Essigella pini (Wilson), the speckled pine needle aphid, on loblolly, 
slash, and pond pines in Florida (also recorded from Maryland and Pennsylvania); 
Schizolachnus piniradiatae (Davidson), the woolly pine needle aphid, on jack and 
red pines in the Eastern States. 
Several other species of aphids have also been recorded on other conifers. For 
example, Cinara confinis (Koch) has been recorded on fir; C. pilicornis (Hartig) on 
Norway spruce and various firs; C. tujafilina (Del Guercio) on northern white- 
cedar, baldcypress, and other species (heavy infestations have been recorded in 
nurseries in Florida and Delaware); Prociphilus bumelia (Schrank) on balsam fir, as 
well as roots of eastern white pine; and the balsam twig aphid, Mindarus abietinus 
(Koch), on a wide variety of hosts including balsam fir, Fraser fir, Siberian fir, 
subalpine fir, white spruce, and juniper. On fir, damaged needles curl and the bark 
of heavily infested twigs becomes roughened (9/9). 
The boxelder aphid, Periphyllus negundinis (Thomas), feeds on the leaves and 
twigs of boxelder wherever it grows in the United States and Canada. The aphid’s 
body is usually yellowish green with brownish marks on the thorax and abdomen. 
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