Contents: By Damage and Image
In progress
Contents: Alphabetical

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

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

Ceanothus stem gall moth
cereal leaf beetle
cherry ermine moth
chilli thrips
cinnabar moth
clay colored weevil
cottony camellia scale

crane flies
cypress tip moth

dogwood sawfly
Douglas fir sawfly
Douglas fir twig weevil
elm leafminer
European pine sawfly new
European pine shoot moth
European wool carder bee
emerald ash borer
Fall webworm
fir coneworm new
flatheaded cedar borer
ground beetle gallery
Hemerocallis gall midge new
hollyhock weevil
honeylocust plant bug
honeylocust pod gall midge
Heliothis phloxiphaga
holly bud moth
huckleberry root aphids
ground mealybug
Japanese beetle
lady beetle gallery
leaf weevil
light brown apple moth
Linden aphid new
lupine aphid new
Macrosiphum rhamni new
maple aphids
maple tip moth
maple midge
March flies
mountain ash sawfly
Myzocallis sp. on red oak new
Narcissus bulb fly
natural enemies gallery
oak ambrosia beetle
oak slug
oak twig gall wasp
obscure root weevil
Pacific flatheaded borer
peach tree borer
peach twig borer
pear blight beetle
pear psylla
pear leaf-curling midge
pear sawfly
pine needle scale
pine and cone spittlebug
poplar and willow borer
Psyllopsis fraxinicola
rose curculio weevil
rose midge
rove beetle gallery
rose stem girdler
sequoia pitch moth
soldier beetle gallery
snapdragon plume moth new
snakefly gallery
speckled green fruitworm
meadow spittlebug
spotted asparagus beetle
spruce twig aphid
tent caterpillars
viburnum leaf beetle
violet gall midge
western poplar clearwing
western spotted cucumber beetle
white pine weevil
woolly alder aphid new
woolly ash aphid
woolly beech aphid

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Rose stem girdler

Rose stem girdler, Agrilus cuprescens Ménétriés, is a key pest of caneberries and roses and can be quite damaging. It is thought to have been established in the United States sometime in the 1870's. It was first noted on rose and blackberry foliage in Olympia, Washington June 4, 2014 and confirmed as rose stem girdler. A few days after, on June 11, 2014, an image of an adult rose girdler was submitted to BugGuide from Davenport in eastern Washington (Westcott. et al., 2015). Rose stem girdler was also caught in a trap in southern Washington near Castle Rock in 2014 and in the Portland area in 2015 (there was an earlier detection, 1994, in Oregon east of the Cascades). Damage from the borer was first confirmed in the Willamette Valley in caneberries at the North Willamette Research and Extension Center in August of 2017. We have reports of damage as far south as Woodburn, OR as of the spring of 2018.

Potential for this borer to become a key pest in caneberry production exists. The beetle has been in Utah since 1955 and is considered a common pest of caneberries and wild roses (Alston, 2015). In Hungary, this pest became a dominent raspberry production pest with regular infestations in well maintained farms. Sources for these infestations were abandoned, not-pruned blocks with high weed coverage (Veszelka and Fajcsi, 2001).

Hosts include plants in the genera, Rubus spp., and Rosa spp. There were prior reports of damage on Ribes spp. but those reports appear to be based on mistaken identity with a similar Agrilus species (Westcott. et al., 2015).

There is one generation per year. The beetles overwinters in the pith of the canes as fourth generation larvae. Pupation occurs as temperatures average 55 degrees F. Adults emerge from the canes in May through June in Utah (Alston 2015) [Samples of infested canes are currently being monitored in rearing cages at the North Willamette Research and Extension Center in Aurora, Oregon, to assess adult emergence during spring of 2015].

Adult beetles are copper-coloured and narrow, tapering toward the end of their abdomen. They are most active (feeding, mating, and egg laying) in the morning, prefering to rest on foliage during the evening. The adults must feed prior to egg laying. Eggs require four-to-fourteen days to hatch depending on temperature. The larvae emerge through the base of the eggs and chew through to the cambiem of the stems.

The larvae are narrow, flattened, and segmented with an enlarged prothorax which covers most of its tiny black head capsule. The larvae continue to feed in the cambien with a spiraling tunnel that often girdles the stem causing the shoot to flag or wilt. Additional symptoms are a swollen node where the spiral tunnel is located. The bark may be discolored, more woody, or cracking in this area. These stems tend to break easily. The third and fourth instar larvae move into the pith of the plants and remain there until they pupate and emerge as adults. Damage can occur on both primary and secondary canes of caneberries.

Vétek et al. (2008) looked at natural enemies of the rose stem girdler. There has been research on biological control in Europe. A parasitoid wasp, Tetrastichus agrili Clwt., caused 57.6% mortality of rose stem girdler larvae in a Hungarian raspberry plantation (Reichart 1968). Additional Tetrastichus spp. have been discovered in Bulgaria. One, a larval parasite, caused 43-92% mortality in the rose stem girdler larvae while another species was an egg parasite.

Management focuses on good plant health (proper fertilization and irrigation), sanitation (removal and destruction of infested canes), and insecticide application times to kill the emerging adults prior to egg laying. Váňová et al. (2008) have looked at within cane distribution of the borer and might be helpful to design infested cane removal strategies. Adult beetle emergence may overlap flowering periods so use appropriate pollinator protection strategies. (More information on management in caneberries is available from Alston et al. (2015) and the Pacific Northwest Insect Management Handbook (2018).



Alston, D. 2015. Rose stem girdler [Agrilus cuprescens]. [pdf]. Utah State University Extension. Ent. 178-15. January 2017.

Davis, D. W., and N. N. Raghuvir. 1964. The biology of the rose stem girdler, Agrilus rubicola communis, on raspberries in Utah (Coleoptera:Buprestidae). Annals of the Entomological Society of America 57 (2): 154-159.

Cane fruit: rose stem girdler. Pacific Northwest Insect Management Handbook. 2018 Edition. <18 April 2018>

Váňová, M., P. Tóth, and J. Lukáš. 2008. Patterns in the within-cane distribution of the gall-like swellings caused by Agrilus cuprescens (Coleoptera: Buprestidae) and the rate of raspberry infestation. [pdf]Integrated Plant Protection in Soft Fruits. IOBC/wprs Bulletin 39, 2008. pp. 77-84. <24 April 2018>

Veszelka, MS. and M Fajcsi. 2001. Changes of the dominance of arthropod pest species in Hungarian raspberry plantations. [pdf]. In Proceedings of the IOBC Working group “Integrated Plant Protection in Orchards” Subgroup “Soft Fruits”. Dundee, Scotland. 18-21 September 2001. <24 April 2018>

Vétek, G. , C. Thuróczy, and B. Pénzes. 2008. Notes on the parasitoids of the raspberry cane midge, Resseliella theobaldi (Barnes, 1927) (Diptera: Cecidomyiidae) and the rose stem girdler, Agrilus cuprescens (Ménétriés, 1832) (Coleoptera: Buprestidae). [pdf].Integrated Plant Protection in Soft Fruits. IOBC/wprs Bulletin 39, 2008. pp. 51-64. <24 April 2018>.

Richard L. Westcott, Chris Looney and Megan Asche. 2015. Agrilus cuprescens (Ménétries) (Coleoptera: Buprestidae), the Rose Stem Girdler, Discovered in the State of Washington, with
Comments on Host Plant Associations
. The Coleopterists Bulletin, 69(2):275-279. <18 April 2018>

Created <18 April 2018>

Current update 24 April 2018

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


Rose stem girdler larva
rose stem girdler larva

Rose stem girdler larva, collected in August, with penny for scalerose stem girdler and penny for scale

Rose stem girdler in Columbia Star blackberry
rose stem girdler in Columbia Star

Rose stem girdler larva in raspberry cane.
rose stem girdler larva in raspberry cane

Rose stem girdler damage on Columbia Star blackberry
rose stem girdler damage on Columbia Star blackberry

Rose stem girdler damage on raspberry canes. Note swollen, woody, and cracked bark.

rose stem girdler damage

Rose stem girdler damage - note swollen rings on stem and breakage
rose stem borer damage

Rose stem girdler adult
rose stem girdler adult

Website editor:
Robin Rosetta

Page last modified 4/24/18


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