Rearing Leucanella viridescens viridor

Hello everyone. I am trying to rear Leucanella viridescens viridor and got a big batch of eggs. Their hatch rate was good i think. Around 90-95%. When they hatched i sprayed them with some mist. Offered american and chinese wisteria, prunus lusitanica and Rubus. I always clean the leaves with a wet paper towel and let them dry before i offer them the leaves. They took 2 days to pick american wisteria and once they did they started eating like crazy all together. Been keeping them between 22-25°C and always with humidity around 70-75%. Took out the leaves of Rubus and prunus and left them with wisteria. 2 days later they started dying one after another, at least 5 or 6 per day... took a photo of the rearing container i am using... i open it at least 3 times a day to let fresh air flow in... still taking a bunch dead everyday... please someone with experience on this species try an tell me what i'm doing wrong... also, today i added the prunus and rubus again...the dead larvae i take out are either on the leaves completely shrunk and dark or on the floor with sort of normal appearance but definitely dead