Brown Marmorated Stink Bug - Samurai Wasp Parasitoid Identification
Brown marmorated stink bug (BMSB) is an invasive insect that first invaded Utah in
2012. It has since caused urban nuisance problems and poses a serious threat to various
commercial fruit and vegetable crops. In June 2019, the samurai wasp was discovered
in Salt Lake City. This exotic parasitoid wasp is the most promising agent for biological
control of BMSB and is uniquely evolved to lay its eggs inside of BMSB eggs. This
handout describes how to determine if BMSB eggs have been parasitized by the samurai
Parasitoids of Brown Marmorated Stink Bug
The brown marmorated stink bug (BMSB) is an invasive pest that damages fruit, vegetable,
and nut crops in the U.S. Parasitoid wasps that sting and kill BMSB eggs are the most
promising biological control method. This fact sheet describes some of the parasitoid
wasps that have been found in Utah, as well as Trissolcus japonicus, a very effective parasitoid wasp that is native to BMSB’s home range and has been
found in the U.S., but has not yet been detected in Utah.
Aphid Natural Enemies and Biological Control
Aphids are prey to many predatory insects, spiders, and parasitoids. Healthy predatory
populations keep aphid populations low, which can reduce or eliminate the need for
Beneficial and Pest Insects of Utah Alfalfa
Beneficial, or predatory, insects play an important role in suppressing pests in alfalfa.
This publication is an introductory guide to the most abundant arthropods (insects
and spiders) found in Utah alfalfa.
Beneficial Insects: Beetles
Many beetles are beneficial insects, either predatory on other insects or eating plants
considered weeds. For certain widespread insect and weed problems, beetles are intentionally
released to biological control.
Beneficial Insects: Big-Eyed Bugs
Big-eyed bugs are generalist predators that consume a wide variety of small prey including
insect eggs, mites, aphids, and small caterpillars. These beneficial bugs can be found
in landscapes, gardens, and many vegetable and field crops.
Beneficial Insects: Damsel Bugs
Damsel bugs are generalist predators that consume a wide variety of prey including
insect eggs, caterpillars, mites, and aphids. These beneficial bugs can be found in
landscapes, gardens, and many field crops.
Beneficial Insects: Lacewings and Antlions
Lacewings and antlions are considered beneficial because the larvae eat a wide variety
of soft-bodied insects. Adult lacewings feed on nectar, pollen, and aphid honeydew.
Brown lacewing and antlion adults are also predatory on other insects.
Beneficial Insects: Mantids
Mantids are predatory insects common in gardens and flower beds. Buying mantid egg
cases can provide some pest control, but often nymphs and adults are cannibalistic
and indiscriminate carnivores.
Beneficial Insects: Minute Pirate Bugs
Minute pirate bugs are generalist predators of spider mites, aphids, thrips, psyllids,
white flies, insect eggs, and small caterpillars.
Beneficial Insects: Syrphid Flies
Syrphid are beneficial predators of small soft-bodied pests like aphids, thrips, and
scale insects. Adults may feed on pollen and nectar, pollinating plants in the process.
Beneficial Insects: True Bugs
True bugs are fluid feeding insects that suck out juices from plants and animals.
Nymphs and adults feed on the same prey, especially soft-bodied insects like aphids
Beneficial Predatory Mites
Predatory mites feed on all life stages of many small arthropods and target pest spider
mites. Most predatory mite species do best in humid conditions and controlled environments
such as greenhouses and high tunnels.
Blue Orchard Bee
Blue orchard bees are solitary (do not live in a hive) and nest in pre-existing cavities.
Blue orchard bees prefer fruit trees from the family Rosaceae, including apple, cherry,
Gardening and Landscaping Practices for Nesting Native Bees
About 1,000 species of native bees reside in Utah; few of them are social. Some wild
bees excel at pollinating Utah's tree fruits, raspberries, squashes, melons and cucumbers.
Most of these native bees nest solitarily underground.
Gardening for Native Bees in Utah and Beyond
900 species of native bees reside in Utah. Some wild bees are superb pollinators of
Utah's tree fruits, raspberries, squashes, melons and cucumbers. Few of our native
bees have much venom or any inclination to sting.
Greenhouse Biocontrol in Utah
This 98-page publication showcases common greenhouse pests and beneficials that can be purchased to manage them. It includes descriptions and images of the beneficials, how they are shipped and stored, recommendations for release rates, and how to manage the greenhouse to ensure that the beneficials reproduce.Download
Reducing Pesticide Poisoning of Bees
Choose insecticides that are non hazardous to bees whenever possible. The more hazardous
insecticide active ingredients include many of the organophosphates and the carbamates,
and some of the synthetic pyrethroids and neonicotinoids.