ID on bug found in millipede cage?

[lownrg]

Hey all, can anyone identify what this might be? I found it in my Narceus gordanus cage. About the size of a grain of rice, if not smaller. It appears to have a black head. There are some springtails and fungus gnats here and there, however, it doesn't look like the fungus gnat larvae on google. I apologize if the picture isn't clear enough, my phone couldn't handle how small it was.

 

[Jaknat]

Im not an expert but it could be a baby spring tail i have attached a picture of a full grown one see what you think?

 

[WildSpider]

Im not an expert but it could be a baby spring tail i have attached a picture of a full grown one see what you think?

@Jaknat Looks like a springtail .

 

[BenLeeKing]

Does it have legs? what is its movement pattern? I think it could be some sort of beetle larvae?

 

[lownrg]

Does it have legs? what is its movement pattern? I think it could be some sort of beetle larvae?

The way it moved reminded me of a mealworm. I imagine it had legs because of the way it moved. It had a black head towards the thicker end of its body.