Sonoran Blue Rearing Project
When the Sonoran Blue larvae reach their last instar I put black paper napkins in the bottom of their cage. They will seek a dark place to pupate underneath the paper. This paper helps quite a lot. Without the dark paper the mature larvae will sometimes wander about the cage aimlessly looking for a suitable hiding place to begin the next stage of their metamorphosis. This photo is magnified about 4x.
These pupae will not eclose until next spring. In order for them to properly develop I must refrigerate them for a month in January to simulate diapause (hibernation) and bring them out to room temperature again.