—_— _— ~~ = oe 
Insects of Shade Trees and Their Control. "5 
Habits —The winter is passed in the adult stage hidden in crevices 
on the bark of the host tree. As growth starts in the spring the 
over-wintered individuals move over to the foliage and, after feeding 
for a week or two and mating, the females lay groups of eggs on the 
underside of the leaf. These hatch in about two weeks into tiny 
bugs, which differ from the adults only in lacking wings, and 
promptly begin feeding. They cast their skin or molt as they grow, 
doing so five times before maturity is reached. Two or more genera- 
tions a year are produced, depending on the length and condition of 
the season, and varying 
therefore with the lati- 
tude and climate of the 
locality. 
Remedy.—When the 
lace-bug is excessively 
abundant and other con- 
ditions permit, it has been 
found possible to achieve 
satisfactory control by 
spraying the insects with 
soap solution (p. 14). 
BOXELDER PLANT-BUG.” 
How injurious. — Al- 
though it feeds on plants 
only, and primarily on 
boxelder, this bug (fig. 
54, e) is known mainly as F¥1a. 54.—The boxelder plant-bug : a, Eggs enlarged, 
i P natural size above; b, c, d, different stages of 
a fall house pest owing to immature bugs; e, adult. All enlarged; natural 
the fact that. Tae ava Me sizes indicated by hair lines. (a—d, Marlatt; e, 
3 ‘ Howard.) 
fested tree is near enough, 
masses of the bugs in search of winter quarters are apt to invade 
dwellings and become a general nuisance there, besides alarming the 
unwitting householders. It first came to notice some 40 years ago in 
the far West, but has since spread pretty generally over the States 
west of the Mississippi River, and has recently been reported in 
States east of that river. 
How recognized—In late summer large numbers of bright red, 
wingless or red bordered, darker winged bugs may be seen sucking 
the sap from the leaves and tender growth of boxelder or, in the fall, 
masses of them wandering up and down the trunk of the tree and 
crawling up brick walls and into houses, cellars, and all sorts of 
cracks and crevices in search of hibernation quarters. 
47 Leptocoris trevittatus Say. 
