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Tuesday, September 28, 2010

The Brown Marmorated Stink Bug

The brown marmorated stink bug (Halyomorpha Halys) wasn’t ever seen in North America until recently. It was most likely first introduced in Pennsylvania. This true bug in the family Pentatomidae is known as an agricultural pest in China, Taiwan, Korea, and Japan. Recently, it has been known to be a pest to various farm crops in the Mid-Atlantic region. This insect often becomes a nuisance both indoors and out when it is attracted to the warmth of a house in fall or winter in search for an overwintering site.
   The adults are about 17 mm or 5/8 in. long. The underside is usually pale or tan with gray markings. The upper and lower portions of the body are shades of brown and the stink glands are located between the first and second leg, on the underside of the thorax.  There are five nymphal stages, ranging in size from the first instar at 2.5 mm to the fifth instar at 12 mm. The abdomen of the nymphs change from yellowish red to off-white with reddish spot and the eyes are deep red. The species usually has a birth rate of one generation per year, two to three if the spring and summer conditions allow it. Adults appear in the spring time, during late April to mid-May.
   These insects aren’t known to cause harm to humans, although their strong stink and noisy buzzing is slightly annoying. The best method to keep stink bugs out of buildings is mechanical exclusion. Sealing the cracks between doors, windows, siding, utility pipes, behind chimneys, and other openings will keep stink bugs from squeezing into the building. Vacuuming or squishing stink  bugs will kill them, but make sure to clean out the area where the stink bugs were killed as it can create quite a stink.

1 comment:

  1. wow, very nice description of a family of stink bugs, in our place we use paper to remove these insect because if we accidentally crashed it . it leaves a nasty scent and that irrirates my nose.




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