As menacing as that creature looks (up close), the tiny ‘Pseudoscorpion’ is a totally harmless worm bin inhabitant. In fact they can be beneficial, feeding actively on various other tiny organisms we often think of as pests.
I’ve only encountered a handful of these invertebrates over the years – not sure whether it’s because they are somewhat rare, or because they are so small (generally only a few millimetres). Likely a combination of the two.
They seem to be more common in mature systems, especially those located outside. This particular specimen was found in some finished castings I recently harvest from the bottom of my bin outdoor worm bin (more about that in another post).
Anyway – just thought it would be fun to share that picture!
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