most insects don't die of old age:
snapped up by a bird or
paralyzed and drained by an eight legged cousin
in captivity they show the signs of time:
ragged butterfly wings,
a fly missing a leg or two,
which out among the leaves would make them just slow enough
just clumsy enough to be caught
tiny machines separated from their nature
metabolic accumulation in their joints and on their wires
rattling, grinding to a halt