Why won’t the bsf turn into flys?

[Ghostbirb]

So I swear I’ve had these bsfl for over a month now and they have cocooned, but I’ve only had like 3 emerge over a period of weeks. Anyone know why they wont cone out of their cocoons?
It’s getting ridiculous at this point.

 

[Gloriawood]

Idk but my last batch didn’t hatch and these don’t seem to be either!

 

[lurker9090]

have same problem, after 3 months i gave up on that batch haha

 

[SteveH]

For me they seem to do better after I started using a CHE on/near them to bump up their temps to around 80

 

[amf45005]

I’ve had terrible luck as well, I’ve only had ONE turn into a fly!

 

[Beppo]

I also get mine to hatch by increasing temp for them. (I had first noticed them hatching a lot in the summer so that was my hint)

 

[SteveH]

I also get mine to hatch by increasing temp for them. (I had first noticed them hatching a lot in the summer so that was my hint)

Same here

 

[MissSkittles]

Same here. I prefer feeding them off as flying treats, but after what must have been a couple of months, nada. So I ordered 500 more and stuck them all together. Finally I was getting some flies after a few weeks…not 500 though. Now it’s back to nothing but lots of bsfl squirming around after a couple of weeks.

 

[Ghostbirb]

is there anyway to keep them from pupating for a few weeks? Or is inevitable and impossible to stop? Lol

 

[Lindasjackson]

I used to get mine from rainbow mealworms and they always hatched into flies and Eustis loved the larvae but recently I started getting them from dubia.com and they don’t even pupate. They just dry up and die within a few days and Eustis wont eat them!

 

[Ghostbirb]

Slightly unrelated but my bsfl have been turning into flys pretty steadily (yay) but I looked at them today and they are CLIMBING their WALLS. Seems I got some Spider-Man larvae on my hands

 

[GrannyK]

Slightly unrelated but my bsfl have been turning into flys pretty steadily (yay) but I looked at them today and they are CLIMBING their WALLS. Seems I got some Spider-Man larvae on my hands View attachment 355049

That is one thing I have a hard time with.. I don’t know why BSFL.