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alder flea beetle
aphid management updated
apple and thorn skeletonizer
apple ermine moth
ash whitefly updated
azalea bark scale
azalea lace bug
azalea sawfly new
bark lice
Barypeithes root weevil
Beneficial nematodes
biocontrol of root weevils
birch aphid updated
black bean aphid new
black cherry aphids new
black stem borer
bluegum psyllid
borers
branch and twig borer
brown marmorated stink bug

bronze birch borer
boxwood leafminer
boxwood psyllid
bulb flies
cabbage whitefly new
carnation tortrix new
carpet beetle (images)
Calligraph californica
caterpillars

Ceanothus stem gall moth
cereal leaf beetle
cherry ermine moth
chilli thrips
cinnabar moth
clay colored weevil
cottony camellia scale
cutworm
craneflies
cypress tip moth
updated
dogwood sawfly
Douglas fir sawfly
Douglas fir twig weevil
dustywings
earwigs
elm leafminer
European pine shoot moth
European wool carder bee
emerald ash borer
Fall webworm
flatheaded cedar borer
ground beetle gallery
hollyhock weevil
honeylocust plant bug
honeylocust pod gall midge
Heliothis phloxiphaga
holly bud moth
huckleberry root aphids
ground mealybug
Japanese beetle new
lacebugs
lacewings
lady beetle gallery updated
leaf weevil
light brown apple moth
Macrosiphum rhamni new
maple aphids
maple tip moth
maple midge
March flies
mountain ash sawfly
Myzocallis sp. on red oak new
Narcissus bulb fly updated
natural enemies gallery
spruce twig aphid
oak ambrosia beetle
oak slug
oak twig gall wasp new
obscure root weevil
Pacific flatheaded borer
peach tree borer
peach twig borer
pear blight beetle updated
pear psylla
pear leaf-curling midge
pear sawfly
pine needle scale
pine and cone spittlebug
poplar and willow borer
Psyllopsis fraxinicola updated
rose curculio weevil
rose midge
roseslug
rove beetle gallery
sawflies updated
scale
sequoia pitch moth
soldier beetle gallery
snakefly gallery
speckled green fruitworm
meadow spittlebug updated
spotted asparagus beetle new
tent caterpillars
thrips
viburnum leaf beetle
violet gall midge
western poplar clearwing
western spotted cucumber beetle
white pine weevil
whiteflies
woolly ash aphid
woolly beech aphid updated

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European wool carder bee

European wool carder bee, Anthidium manicatum, is an exotic bee fairly recently detected in the western United States. Where it has established, it can often be found around lambs ear, Stachys byzantina, which has fine woolly hairs on the leaves which the female bees collect to line their nests. The male bees are very territorial and aggressively defend their favorite plants from other bees by bumping into the other bees. They have five spines on their top of their last abdomenal segment used in this battle with other bees (Gibbs and Sheffield, 2009). They do defend their territory from other males of the same species but are far more likely to defend against other insect species, as many as 70 times an hour (Wirtz et al. 1988). They can inflict sufficient injury to maim or kill honeybees. In addition to lambs ear, the bees may be found on catmint and Salvia sp.

The long-term impact of this introduced bee has yet to be determined. There is concern that introductions of exotic bees may increase the risk of new bee diseases to the US. They may also outcompete native bees or prefentially pollinate exotic flowers over native plants. The bees were first detected in New York in 1963 and were detected in California in 2007, and have since been found in Washington (2011) and Oregon (I have images of these bees from June 2009 in the Portland Metro area)

Resources

Kathy Keatly Garvey. European wool carder bee. The California Back Yard Orchard. University of California. Great information and beautiful images of these bees can be found at this website.

Gibbs, J. and C.S. Sheffield. 2009. Rapid Range Expansion of the Wool-Carder Bee, Anthidium manicatum (Linnaeus) (Hymenoptera: Megachilidae), in North America. Journal of the Kansas Entomological Society. 82(1), 2009, pp. 21–29. <21 June 2017)

Payne, A. 2011. Nest site selection in the European wool-carder bee, Anthidium manicatum, with methods for an emerging
model species
. Apidoligie (2011) 42:181-191.

Wirtz, P., Zabados, M., Pethiq, H., and J. Plant. 1988. An extreme case of interspecific territoriality: Male Anthidium manicatum (hymenoptera, megachilidae) wound and kill intruders. Ethology, Vol 78(2), Jun 1988, 159-167 [abstract]. <21 June 2017>

 

Original publication: 8/17/2013
Last update: 6/21/2017

Author: R.L. Rosetta, Extension Nursery Integrated Pest Management, Department of Horticulture, Oregon State University

European wool carder bee closeup
European wool carder bee

European wool carder bee

European wool carder bee on lambs ear
European wool carder bee

Website editor:
Robin Rosetta

Page last modified 6/21/17

 

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