Urgh!!!
Yep, I recognize that little &$%#@# -- strangely enough, not from my tank, though -- I've never seen any (yet - knocking on wood!!) in our tank.
I remember reading about them on RC quite a while ago. The species name is
>>Phestilla minor<<, and they're definitely a Monti. eater.
Here - I found it, here's the thread on RC I remember reading --
>Capricornis recession< -- I honestly can't remember if anyone found a "solution" for these critters. Hopefully that thread will provide some insight.
I'll keep a close eye, thanks for the heads-up, and good luck!! Keep us posted.