Beetles are like the MVP of species (minimum viable, not most valuable). Some superstructure (which can often double as armor) plus food storage. Even crabs are extravagant next to a beetle: crab takes that recipe and adds on attack capabilities, which are sometimes wasteful (crabs attacking humans are wasting their time for example).
Life: beetles, plus extra features which must be justified.
Life: beetles, plus extra features which must be justified.