Well,my lonely larva is still hanging on,and reached 90 days!
My previous record was 99.
Pleopods look fully developed.If it was a peppermint,I would say it was last stage,close to settling.
But amboinensis should grow up to 20 mm and 120 days so I expect new stages and/or marking time.This is a view of the pleopods:
Each pleopod has two branches:exopodite and endopodite.See a close look:
Endop.are well developed,with setae (hairs)all around.But exop.are less developed,shorter (about 60%) and especially narrower.
Will see what comes next,provided this larva survives!