International Journal of Acarology (2001) 27, 179-187

R. Ochoa, E.F. Erbe, W.P. Wergin, C. Frye and J. Lydon (2001)
The presence of Aceria anthocoptes (Nalepa) (Acari: Eriophyidae) on Cirsium species in the United States
International Journal of Acarology 27 (3), 179-187
Abstract: A rust mite not previously reported in the U.S. was observed on Canada thistle (Cirsium arvense [L.] Scop.) growing in Maryland. Based on examination of specimens under light and low-temperature scanning electron microscopy, the mite was identified as the rust mite, Aceria anthocoptes (Nalepa). The mite was found throughout Maryland, in its bordering states, and in two northcentral states (Minnesota and North Dakota). Other Cirsium species growing near Canada thistle infested with A. anthocoptes did not harbor the mite. We conclude that, although only recently discovered in this geographic region, A. anthocoptes is widely distributed in the mid-eastern U.S. and is host specific to Canada thistle.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Ronald Ochoa, John Lydon

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Cirsium arvense (weed)		U.S.A. (NE)
Aceria anthocoptes (on weeds)	Cirsium arvense (weed)		U.S.A. (mid N)
Aceria anthocoptes (on weeds)	Cirsium arvense (weed)		U.S.A. (NE)