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Photo#287723
Hemp Russet Mite - Aculops cannabicola
Copyright © 2009 Karl Hillig

Hemp Russet Mite - Aculops cannabicola
Bloomington, Monroe County, Indiana, USA
Size: 0.2 mm
These microscopic four-legged mites infested Cannabis plants in a secure greenhouse at Indiana University. This picture shows them on a leaf petiole that was about 2 mm wide.

Images of this individual: tag all
Hemp Russet Mite - Aculops cannabicola Hemp Russet Mites - Aculops cannabicola
Contributed by Karl Hillig on 13 June, 2009 - 9:53am
Last updated 19 February, 2010 - 8:06am

Moved
Moved from Aculops.
… Harsi S. Parker, 13 June, 2009 - 2:31pm

More info...
Hi Karl! Fascinating photos of these mites. I was curious about how confident you are in your ID? If you could cite some references or other info which helped you confirm the identity of these mites that would be helpful. For instance, how might one separate this species from other similar mites which might also infest hemp plants?

Personally, I do not have the training or knowledge to evaluate or critique your ID. The reason I am asking for more clarification is that I would like to create a new species page in the guide if you are confident in your own ID. Thanks, and also...
Welcome to BugGuide!
… Harsi S. Parker, 13 June, 2009 - 1:04pm

 
Hemp Russet Mite
The mites were identified for me by John McPartland, a leading authority on pests and diseases of Cannabis.

McPartland, J.M., R.C. Clarke, and D.P. Watson. 2000. Hemp Diseases and Pests. CABI Publishing, Wallingford, UK.

McPartland, John M. and Karl W. Hillig. 2003. The Hemp Russet Mite. Journal of Industrial Hemp 8(2): 107-112.

The second reference includes a photomicrograph of one of the mites.
… Karl Hillig, 13 June, 2009 - 1:38pm

 
Perfect!
This is just the information I was hoping to receive -- Thanks, Karl! I will go ahead and create a new page in the guide and move your images there. In the future, if you submit images to the guide and are certain of their identity but there is currently no guide page for them, you should go ahead and submit a topic to the Requests for Additional Guide Pages section of the Forums.
… Harsi S. Parker, 13 June, 2009 - 1:48pm

 
Thanks, Harsi
This is a great site!
… Karl Hillig, 13 June, 2009 - 2:38pm

 
Agree, 100%!
This site is an amazing resource. Thanks again for submitting these valuable images!
… Harsi S. Parker, 13 June, 2009 - 3:04pm

 
hemp mites
Could one of you be so kind as to suggest control/ irradication methods? perhaps post info on my FB page?
… Mitch, 30 September, 2010 - 2:48pm

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