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STINK
BUGS
Many stink
bugs and shield bugs are considered agricultural pest insects,
because they can create large populations, which feed on crops
(damaging production), and they are resistant to many
pesticides. They are a threat to cotton, corn, soybeans,
native and ornamental trees, shrubs, vines, weeds, and many
cultivated crops. They have a gland that gives off a foul odor
when bothered. However, some genera of Pentatomidae are
considered highly beneficial: the anchor bug, which can be
distinguished by the red-orange anchor shape on the adult, is
one example. It is a predator of other insects, especially to
certain beetles and other pest insects.
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GREEN,
BROWN & SOUTHERN GREEN
Adult
- All adult stink bugs are shield-shaped. Green
and southern green stink bugs are bright green and
measure 14.0 to 19.0 mm long. The major body regions of
the green stink bug are bordered by a narrow,
orange-yellow line. Brown stink bugs are dull
brownish-yellow in color and 12.0 to 15.0 mm long. Color
plate.
Egg
- When first laid, the barrel-shaped eggs of the
green stink bug are yellow to green, later turning pink
to gray. Eggs of the green stink bug measure 1.4 x 1.2
mm. The white, kettle-shaped eggs of the brown stink bug
are slightly smaller than those of the green stink bug.
The creamy, cylindrical eggs of the southern green stink
bug measure 1.0 by 0.75 mm and develop a pinkish hue
before hatching.
Nymph
- The nymphs of all three species are smaller
than adults, but similar in shape. Green stink bug
nymphs are predominantly black when small, but as they
mature, they become green with orange and black
markings. Nymphs of the brown and southern green species
are light green. Southern green stink bug nymphs,
however, have two series of white spots along their
backs. Color
plate.
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A-1 Federal for an appointment
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