Programon Concept 4: Cavelouse?

This is some kind of woodlouse-like monster that would probably evolve from Peatle! I can't say I'm entirely satisfied with it... I like woodlice a lot, but this design isn't exactly inspired or anything. It's also bland colour-wise; there's not enough variety, and it comes across as dull and- ...I could criticise my own work all day, yes. o_O
I might improve it later, anyway... if I have any ideas.

I haven't decided on a name, so I've used 'Cavelouse' for now, which isn't exciting or clever or anything!
Other possibilities include:
Mineralouse (silly)
Gravelouse (gravel + louse; looks like 'grave louse' though)
Pebblouse (pebbles are too small for this?)
Slatore (slater + ore; bad in so many ways)
Things involving words like 'isopod' or cave/mine/defence/'tank'... Or something so clever that I have yet to think of it!

Anyway, it'd probably be an Insectoid/Earth Transient form!

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EDIT: I've included a completely different possibility for its design! o_O
Its head is more like its prevolution's, and its colours are more vibrant... I'm unsure whether that adds visual interest, or just looks clownish. Either way, clearly this design needs work!