Pests and Diseases forum: Please help with bug identification!

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Aug 29, 2016 8:11 AM CST
So I recently got some cuttings from a cactus and it seems to be doing good, however, I have spotted some small bugs crawl around on the plant and in the soil. I'm not sure if they're a threat to the plant or just simply live in the soil, so I thought identifying the bugs would be the best action.

Thumb of 2016-08-29/tallerknen/0771ed

Thumb of 2016-08-29/tallerknen/9d81e8

The bug is a silvery green color, and they're pretty small.

Thumb of 2016-08-29/tallerknen/366692

I haven't noticed any weird markings or discolorations on the plant, but of course that doesn't say much about the condition of the root system. I also noticed some fur-like texture on one of the new roots along with something that looked like cobweb in the soil.

Thumb of 2016-08-29/tallerknen/dc1516

Do any of you know what kind of bug it may be, and should I take action?
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
Aug 29, 2016 11:19 AM CST
Welcome! to NGA.

In the first two pictures it is hard to see detail, it looks like it could be a mite or some other kind of arachnid. Is it possible for you to count the number of pairs of legs? The third picture could be a fungus gnat adult. It would be easier to identify if we could see the pattern of veins on the wings, which may be hard for you to do depending on your camera. In the last picture the hairs on the root could be normal root hairs. See these images for examples:

Aug 29, 2016 1:01 PM CST
Thank You!

I took a closer look at the ones I caught and I think you're right. I can't see the pattern of the wings either but the shape of the body is identical to the fungus gnat's.
Thank you for your help! Big Grin

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