-- Cicadas (locusts) attack oaks as well as other species and are widely
distributed in the East. Young, transplanted trees, and branches of
large trees may be severely damaged by the egg-laying punctures of adult
Insect (figure 38a). -- Adults are heavy bodied, and 1.6 inches
(40 mm) long. Their wings are transparent with prominent veins. The
female is completely black on top, while the male has four or five orange-brown
Injury (figure 38b). -- Females puncture the twig in straight rows
to lay eggs and often damage twigs so severely that their terminal portions
die. Large numbers of molted skins of the nymphs may be found attached
to trees trunks.
-- The adult female cuts the bark of twigs and lays 24 to 28 eggs. Newly
hatched nymphs drop to the ground, burrow into the soil, and feed on
the roots for 13 to 17 years.
-- Protect small trees with netting. Properly timed insecticidal treatment
may be necessary.