to 8 mm. in diameter, dark brown 
Toumeyella, in part 
3. On pines: 
Hard pines at base of needles on new growth during 
summer; mature female oval, woolly, wax covering 
1 cm. or more, white woolly covering 
Pseudophilippia 
Scotch, jack, lodgepole, and other hard pines on twigs 
and branches; mature females oval, 5 to 7 mm., 
reddish-brown, dorsal surface very convex and 
pitted: or irregular) = Toumeyella, in part 
Hard pines on new shoots and under bark scales, ma- 
ture female long oval, 2 to 4 mm., dark brown to 
black, produces long, flat white egg sac under bark 
scales of branches and trunk; immature instars 
causes small pit galls in epidermis of new growth, 
new growth dying in July, August, and September 
Matsucoccus 
Pine leaves, various species; mature female pear- 
shaped, 114 to 3 mm., dirty white to dirty gray 
Phenacaspis 
Pine, various species, and Douglas-fir leaves; mature 
female oval, 1 to 2 mm., dark gray, concentric nip- 
ple orange... SNe abet SA ears ae Aspidiotus, in part 
On other conifers: 
Arborvitae twigs; mature female round to oval, 
3 to 4 mm., reddish or reddish-brown, some- 
times mottled; dorsal surface very convex 
Lecanium, in part 
Hemlock leaves and twigs; mature female oblong, 
1 to 2 mm., dark gray to black with lighter 
border ......... _..... Aspidiotus, in part 
Juniper leaves and twigs; mature female nearly 
circular, about 2 mm. in diameter, light gray 
to white, central or concentric nipple yellow 
Diaspis 
Spruce, various species at base of buds on new 
growth; mature female round, 3 to 4 mm. in 
diameter, light brown, dorsal surface very 
CONVEX. - eee late ue! SP lysOnenmes 
4, Body of adult female covered by a “scale” made up of 
secreted matter, plus the cast eee of the two larval 
stages = iach ety oe mea 
Body of adult female otherwise: naked, covered with 
waxy or woolly secretion, enclosed in a secreted shell, 
never covered by a scale as described above 
5. Scale of adult female elongated, narrowed anteriorly with 
the larval cast-skins terminal, broadened posteriorly 
Seale of adult female circular to oval with exuviae cen- 
tral or subcentral . Aspidiotus, in part 
6. Scale of adult female white or dirty white 
Chionaspsis, in part 
Seale of adult female dark, usually dark brown 
Lepidosaphes 
94 
