"Apis Petra secretes a highly acidic saliva which it uses to mulch out great warrens through bedrock. Curiously, however, they leave manufactured stone untouched - a relief to the homeowners of the Archipelago."
These are the different Traits that the Rocky Bee can spawn with.
When a trait has multiple values one is picked randomly when the bee is created.
Lifespan Short, Normal
Productivity Slow, Normal
The Apiarist's Almanac gives the following hint:
A noxious species that melts rock to build hives deep within stone formations...
When asking Dr Beenjamin BhD for a hint he says the following:
Rocky bees? Are you deliberately wasting my time? You're as dense as the rocks they live in!
- This is the only bee that produces a naturally available resource from as it's special produce.