Help me identify this small black insect pest

[Afid]

Looks like springtails, they should be harmless or even beneficial.

[Fuerte Rav]

They look like a tiny black beetle to me. Some arrived in an orchid from a shop and quickly multiplied in that plant pot, the plant eventually gave up but that might have been for other reasons. Unfortunately some had moved to other pots and it's been an ongoing battle to get rid of them. All my orchids are in S/H and the best results come from copious flushings.
A year or two ago someone ID'd them on this forum with pics that matched my pests but I can't for the life of me remember the name. I've searched and searched on here ....

[Grim Tuesday]

Originally Posted by Afid

Looks like springtails, they should be harmless or even beneficial.

I think you're right! Combination of the fact that they were springing out of the media and that they were in the decomposing part of the media, not the leaves.