All 4 of the other juveniles molted in sync

 

EDIT 10/10: no longer 100% sure all of them molted simultaneously, counted one recently and it still had same number of segments?

Caught the entire batch molting at the same time! I'm very relieved. In the past few weeks I'd been biting my nails because I was worried they'd be so cowardly that they'd get malnutrition and die half an inch underneath the proverbial milk and honey. Remember how that's seemingly almost what'd been happening with those Nyctoporis grubs?

The adult seems to be significantly less epigean now (but still surfaces near-daily for considerable periods because of its voracious appetite). Whereas it tended to completely surface in the past it now prefers to feed on the undersides of leaves with only its anterior end above ground (tenebrionid larva style). The highly surface-active behavior it displayed previously appears to be initially from inadequate nutrition and then (once I had figured out how to rot leaves properly) from several weeks of intensive compensatory feeding.

I guess this means the ones loose at the Arboretum are, like, somewhat constantly starving. Such is life?