I keep all life forms in one plastic tote with oats... the beetle,mealworm, pupa, eggs and the circle of life repeats over and over.The first time I have enough to take fishing with me I accidentally had some pupa mix in with the mealworms and didn't think anything about it.
That day I was with a friend, and the fishing was slow,until he motioned me over to where he was and said "they're tearing up these little white things" he was using the pupa instead of the mealworms.I tried some on my line and sure enough they got more attention from the fish than the regular mealworm.
I didn't think you could use the pupa because they seemed to be too delicate,but no they cast just fine.Being on the delicate side is to your advantage, because biting down on pupa is almost like biting down on a bare hook.
OK...mealworm vs its pupa... the winner is the pupa.For years now I have fished side by side with my girlfriend (who won't use the pupa because she thinks they look weird) and I always get way more bites than she does.You would think she would switch over to the pupa,but noooo...how stupid is that ? For those out there that raise regular mealworm give the pupa a try... I think you will be surprised.