Small black bugs in the medium

[plantlady]

Thanks for your input! I am familiar with shore flies and their larvae and can safely say that these pests are not related to shore flies since they resemble tiny small beetles and their abdomens are rounded like aphids or beetles. I did however find some shore fly larvae in a humidty tray with plants growing in spaghnum! The distingushing feature in between these minute insects is that my bugs have a visible distinction between their head and rounded abdomen.

They do appear to be attracted to the color yellow as I have noticed tiny dots appearing on my traps. In comparison to fungus gnats, these insects are perhaps 1/10 or 1/16 of the size of a fungus gnat. I would post a photo but I don't believe my camera would provide much detail as the insects are extremely small.

My medium is clay aggregate, there is no evidence of algae, diatoms, or other growth on my rocks. The spahgnum is another story.

I believe these bugs came with some phragmipediums that were growing in a greehouse with many other types of plants. I repotted my phrags which were in a firbark medium to the clay aggregate and probably transferred the insects to the clay aggregate.

I found some pictures online of flea beatles and I can say that these tiny little bugs are not flea beatles. However they may be the smallest beatle in the world. Nanosella Fungi