.... of the Stink Bugs
We get them all year long, but now that the nights are getting cooler we are swamped with the damned things.
We call them "twitter bugs" because of the sound they make when the fly into you.
You never want to swat one hard when they land on your arm or clothes because they just explode.
They just ooze a yellow liquid that smells soooo bad!
Bug spays don't work either. The only thing we find that gets rid of them is a good old fashion fly swatter. But you have to be careful that you don't hit them hard enough for them to squish.
Even Charlie and the girls won't eat them!
Source:
http://ento.psu.edu/extension/factsheets/brown-marmorated-stink-bug
Brown Marmorated Stink Bug
Halyomorpha halys
The brown marmorated stink bug (BMSB), an insect not
previously seen on our continent, was apparently accidentally introduced
into eastern Pennsylvania. It was first collected in September of 1998
in Allentown, but probably arrived several years earlier.
As of January 2015,
Halyomorpha halys has been recorded in the following 49 counties, although it is probable that they are in all counties:
Adams, Allegheny, Armstrong, Beaver, Bedford, Berks, Blair, Bucks,
Butler, Cambria, Carbon, Centre, Chester, Clarion, Clinton, Columbia,
Cumberland, Dauphin, Delaware, Elk, Erie, Franklin, Huntington, Indiana,
Jefferson, Juniata, Lackawanna, Lancaster, Lebanon, Lehigh, Luzerne,
Lycoming, Mercer, Mifflin, Monroe, Montgomery, Northampton,
Northumberland, Perry, Philadelphia, Pike, Schuylkill, Snyder, Somerset,
Union, Washington, Westmoreland, Wyoming and York
It is also recorded from many other states such as:
California, Connecticut, Delaware, Indiana, Kentucky, Maryland,
Massachusetts, Michigan, New Hampshire, New Jersey, New York, North
Carolina, Ohio, Oregon, Rhode Island, Tennessee, Virginia, Washington,
and West Virginia
Sightings have also been reported in the following states however
this is not to imply that there are reproducing populations in those
states:
Alabama, Arizona, Florida, Georgia, Idaho, Illinois, Iowa, Kansas,
Maine, Minnesota, Mississippi, Missouri, Nebraska, New Mexico, South
Carolina, Texas, Utah, Vermont, and Wisconsin
This true bug in the insect family Pentatomidae is known as an
agricultural pest in its native range of China, Japan, Korea and Taiwan.
Recently, the BMSB has become a serious pests of fruit, vegetables and
farm crops in the Mid-Atlantic region and it is probable that it will
become a pest of these commodities in other areas in the United States.
BMSB becomes a nuisance pest both indoors and out when it is
attracted to the outside of houses on warm fall days in search of
protected, overwintering sites. BMSB occasionally reappears during
warmer sunny periods throughout the winter, and again as it emerges in
the spring.
Description
Adults are approximately 17 mm long (25 mm = one inch) and are shades
of brown on both the upper and lower body surfaces (Fig. 1). They are
the typical “shield” shape of other stink bugs, almost as wide as they
are long. To distinguish them from other stink bugs, look for lighter
bands on the antennae and darker bands on the membranous, overlapping
part at the rear of the front pair of wings. They have patches of
coppery or bluish-metallic colored puntures (small rounded depressions)
on the head and pronotum. The name “stink bug” refers to the scent
glands located on the dorsal surface of the abdomen and the underside of
the thorax.
The eggs are elliptical (1.6 x 1.3 mm), light yellow to yellow-red
with minute spines forming fine lines. They are attached, side-by-side,
to the underside of leaves in masses of 20 to 30 eggs.
There are five nymphal instars (immature stages). They range in size
from the first instar at 2.4 mm to the fifth instar that is 12 mm in
length. The eyes are a deep red. The abdomen is a yellowish red in the
first instar and progresses to off-white with reddish spots in the fifth
instar. Protuberances are found before each of the abdominal scent
glands on the dorsal surface. The legs, head and thorax are black.
Spines are located on the femur, before each eye, and several on the
lateral margins of the thorax (Fig. 2).
Figure 1. Adult brown marmorated stink bug.
Figure 2. BMSB nymphs on Trumpet Creeper
Life History
This species probably has a single generation per year in
Pennsylvania depending on the temperatures. Warm spring and summer
conditions could permit the development of two or three generations.
However, in parts of sub-tropical China, records indicate from four to
possibly six generations per year. Adults will emerge sometime in the
spring of the year (late April to mid-May), and mate and deposit eggs
from May through August. The eggs hatch into small black and red nymphs
that go through five molts. Adults begin to search for overwintering
sites starting in September through the first half of October.
Damage
In its native range, it feeds on a wide variety of host plants.
Fruits attacked include apples, peaches, figs, mulberries, citrus fruits
and persimmons. This true bug has also been reported on many ornamental
plants, weeds, soybeans and beans for human consumption. Feeding on
tree fruits such as apple results in a characteristic distortion
referred to as “cat facing,” that renders the fruit unmarketable as a
fresh product.
Apple Damage
This insect is becoming an important agricultural pest in
Pennsylvania. In 2010, it produced severe losses in some apple and peach
orchards by damaging peaches and apples. It also has been found
feeding on blackberry, sweet corn,
field corn and soybeans. In neighboring states it has been observed damaging tomatoes, lima beans and green peppers.
Peach and Sweet Corn Damage
These insects can produce allergic reactions (rhinitis and/or
conjunctivitis) in some individuals who are sensitive to the bugs’ odor
(an aeroallergen). These chemicals are produced by dorsal scent glands.
Individuals sensitive to the odors of cockroaches and lady beetles are
also affected by the BMSB. Additionally, if the insects are crushed or
smashed against exposed skin they have been reported to produce
dermatitis at the point of contact. This is particularly important
regarding agricultural workers picking fruits and vegetables.
The stink bug will not reproduce inside structures or cause damages.
If many of them are squashed or pulled into a vacuum cleaner, their
smell can be quite apparent.
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YUCKY!