Roach colony problem

[lee128]

Hi again
I been breed a dubia colony for a while now with no problem but lately I been finding these weird bug they look like jumbo maggots to me does anyone known what they are?

 

[Entomologist210]

Sorry, but without having it under my dissecting scope it would be difficult to determine. Some sort of vermiform larva, but it could also be a worm. How sealed is your colony? Have you noticed any adult flies around it?

 

[lee128]

Thanks I have see some blue bottles fly around the tub. There tub has aluimam mosquito netting I recently updated it, before the tub was always wet for the moisture

 

[Entomologist210]

It may be the the blow flies laid eggs onto the screening and the hatching larvae were able to make it down to the substrate.