lavae looking things

[samzz]

hey i cleaned my tank today and saw THOUSANDS of pupae or lavae looking things at the bottom of the gecko tank under the newspaper yes i mean THOUSANDS !! i check the other tanks beside him and all was clean except his tank?! any idea what was it?! i feed him mealworms and superworms as i mention in other posts and could it be the lavae or pupae from the tiny flys (that might be fruit flys) that came from the worms?will it affect him? or it might be the parasite from the gecko?! i cleaned it and the gecko look healthy? any idea? im worried