Coneflower Rosette Mite (Family Eriophyidae) on Echinacea sp.

The green tufted growth on the disc of this coneflower is caused by a tiny eriophyid mite. These mites cause flower head distortion by feeding at the base of the flowers. Eriophyid mites are unique in that they only have 2 pairs of legs (most mites have 4 pairs), and they are so tiny that you would need 40x magnification to see them clearly (most mites can be seen with a 10x hand lens).

The mite has yet to be taxonomically categorized, so it has no scientific name. But, it's generally referred to as the Coneflower Rosette Mite based on the damage that it causes to coneflowers.

comments (6)

Ferdy Christant

Lion

I'm stunned...how did you possibly know this? Posted 5 years ago
1. Christine Young
  
  Lion
  
  I knew the basics of the mites just by learning them over time, and the rest of the info google told me. Posted 5 years ago

jvsarratt

Green Fly

Hello, these are wonderful images! My colleagues and I are describing this eriophyoid mite and so far little is known about the distribution. I’m curious, have you seen it in other locations besides Woodbury and Sharon, CT? Thank you! Posted 3 years ago
1. Christine Young
  
  Lion
  
  Thank you! I have not noticed them in other locations, but will keep an eye out for them next year and can let you know. Also, I could take samples to send you, if that would be useful. Posted 3 years ago, modified 3 years ago
2. 1. jvsarratt
    
    Green Fly
    
    Thanks so much for responding. So far your sightings are the most northeastern observations I’ve found - if it’s OK with you I might mention it in the paper and cite you as “pers. comm.” Yes if you do see more I’d love a sample - you could email me at jvsarratt_at_gmail_com and I’ll send the mailing address. Thank you! And happy holidays/new year :) Posted 3 years ago
  2. 1. Christine Young
      
      Lion
      
      No problem :). Of course -- feel free to mention it in your paper. Also, you can use my photos for whatever purpose, if they are helpful to you. I can send them through email if you have a use for them. And, I will make a note to look for these mites next year, will collect samples, and contact you if I find them again.
      
      For further communication, my email is cmy610@aol.com Posted 3 years ago, modified 3 years ago

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