Dubia shedding question

[MrWhite]

I'm new to dubia roaches. a couple of times I've found what I thought was a dead sub-adult roach. When I picked it up, it was a completely hollow exo-skeleton so I though it was just a shedding. I kind of poked around and didn't find any white roaches. The question is:

how long does the roach stay white after a shed and does the shed look like a complete roach body(I thought maybe they shed in pieces), just hollow?

thanks

 

[Mt3]

Yes, when roaches molt they leave behind a "shell," which is most noticeable with adults because it looks like a hollowed out roach. After molting they immediately begin to turn brown again, though the process takes several hours.