EUROPEAN EARWIG (Forficula auricularia).
This introduced earwig was
discovered in Rhode Island in 1911 and on the West Coast soon
after; since then it has appeared in widely scattered localities. It is dark
reddish brown, hard, 4/5 inch long, with forceps about one-fourth the
length of the body protruding from the abdomen. These forceps are large
and curved in the male, rather
straight in the female. The front
wings are rather short, and the hind
wings are folded up under them.
The female lays a batch of eggs in
early spring and broods over them
until they hatch (Figure 29), then
watches over her young until the
first molt, after which she lays another batch of eggs.
Young nymphs feed on green
plant shoots, flowers, or vegetables;
older earwigs feed on blossoms, fruits, and vegetables, sometimes other
insects. They work at night and often crawl into houses.
Control. Standard control has been by means of a bait, using 6 pounds
of wheat bran mixed with 1/2 pound sodium fluosilicate and moistened
with 1 pint of fish oil. Lindane is now recommended (4 teaspoons Isotox
Garden Spray per gallon of water), and dieldrin is a recent possibility.
All infested places should be sprayed thoroughly.
GARDEN FLEAHOPPER (Halticus bracteatus)
is the only species of interest
to gardeners. It is a sucking insect in the order Hemiptera, the
true bugs, looking something like a small black aphid but resembling a
flea beetle in its jumping habit. It is 1/10 inch long or less and winters
as an adult in weeds. Many vegetables and ornamentals are attacked,
the leaves getting pale spots caused by the sucking of greenish nymphs.
Control. Two applications of DDT dust give good control. Nicotine
sulfate and soap is fairly effective. Keep weeds destroyed.
Flies are in the order Diptera, which means 2-winged, thus differing
from other insects with 4 wings. The larvae are maggots, and some species
are discussed under that heading. They are soft, white or yellowish,
footless worms without much head, and they pupate in brown capsules
called puparia. Some flies are important beneficial insects, some cause
wormy fruit or bulbs, some are leaf miners.
CARROT RUST FLY. See under Maggots.
CHERRY FRUIT FLY (Rhagoletis cingulata).
This is a white-banded fly
common in northern United States on cherry, pear, and plum.
In conjunction with the black cherry fruit fly (R. fausta) it causes most of
our wormy cherries. The black and yellow flies, somewhat smaller than
houseflies, emerge from brown puparia in the soil in late spring. They
feed on leaves and fruit in a scraping-sucking process and lay eggs in
fruit through small slits. The maggots feeding inside cause misshapen,
undersized cherries. When mature, the maggots leave the fruit and
drop to the ground.