There is an absolute truth to the premise that there are vital nutrients (as well as moisture) lost in feeding dried "anything" to any creature.
Joe, I think you probably have a good heart to not want to "play God" with the life of even the tiniest creature, but the fact of the matter is ALL animals are either predator or prey (or both). Crickets are essentially vermin, and I would much prefer feeding them to a mantid than butterflies, which (like bees) help spread the gift of life through their foraging from flower-to-flower.
The suggestion of feeding flies was also good, as they are nothing but vermin and scavengers themselves. To have an unlimited supply, simply leave a piece of meat in a dish outside and in no time you will have all the flies you ever wanted (or didn't want).
What's funny (actually sad) is that the same people who make sure to feed live animals to as insignificant a creature as a praying mantis, will then go ahead and feed their dogs a bag of dried dog food. Dogs are a hundred times more complex, intelligent creatures than a mere mantis, and yet 99% of dog owners will dump dry, barren, nutritionally-devoid "kibble" in front of their dogs to eat every day ... and yet provide whole animals to their mantids.
As a breeder of dogs for over 20 years, I can't tell you how many dogs I have seen fall apart prematurely precisely because of this same concept ... that raw, whole animals are what the carnivorous predator we call "dogs" were in fact designed to eat, and that by feeding them "dry dogfood" all their lives instead, most owners don't realize that they are slowly poisoning their animals with an unhealthy concoction that will never be able to take the place of feeding raw.
Anyway, good posts. Mantids were designed to eat other raw, whole, living arthropods ... and that's just the way it is.
Jack
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