What nutritious insects exist to farm that require the least attention? What nutritious insects exist to farm that require the least attention? I'm looking to automate simply, in a self regulating way. Edit: To add detail, I imagine the insects would live densely in a large tank and be isolated from the outside. They would be able to breed and would co-exist with a plant that is also able to propagate, that could if needs be even be an air plant, that is eaten by the insects, dead insects either return to nourish the plant, or leave through a funnel, water also evaporates and falls as rain inside the tank. The idea is to produce food without human effort. This could be in the form of a very cheap to use coin operated vending machine. The insects could be compressed and dry fried into a block to be dispensed, maybe like a bar, the machine could be solar powered.

The leaf cutter ant _Atta laevigata_ is a popular delicacy in Colombia where it is known as _hormiga culona_ (big-ass ant). The ants are usually salted and fried and play a similar culinary role (I am told) as pop corn (image source):

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I can't testify as to how hard it is to cultivate them, but one difficulty will be chosing the edible ones. Apparently, only the queens are edible.