OF April_May 2020 e

A female samurai wasp Trissolcus japonicus parasitizing eggs of the
brown marmorated stink bug (photo courtesy of W. Wong.)
An adult brown marmorated stink bug (photo courtesy of W. Wong.)
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they stink if disturbed or squashed.
Stink bugs spray a noxious odor from
their abdomen as a defense mechanism.
They live for 6-8 months. Females can
lay up to 400 eggs during their lifetime.
Other OSU Research Discoveries:
• BMSB show a disconnect between
feeding and responding to pheromone
traps.
• Early season response to traps is
poor.
• Warning: Bringing pheromones
into the orchard can cause damage
in the trap vicinity. Aggregation
pheromone attracts all the insects.
Keep them out along the border.
• Traps are useful for detection, but
they don’t take the place of scouting.
• Exploiting pheromones to
attract-and-kill, or for mass-kill
sites needs more research.
Control is Elusive for BMSB
Insecticides which are effective for
BMSB are nearly all broad spectrum
and restricted use, Wiman said.
Tests have been done with baited
sheets of netting treated with pyrethroid.
There have also been experiments
done using light as a way to
attract BMSB to such a kill site. The
problem? Getting the BMSB to land on
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12 Organic Farmer April/May 2020