Solitary bees are bees that don't claim hives or nests, do not produce honey nor combs, and whos sole purpose is to be bred to make domestic bees and look cute. They can also be sacrificed to the squisher if you don't want to get rid of your domestic bees.
Bees from this list can be respawned by using honey treats on empty nests or man made ones. The more honey treats used in the nest, the faster a bee will appear if at all.
1
Ashy Mining Bees
Spawns in nests in dirt, sand, and gravel.
Breed with crystalline bees to make iron bees.
Nomad bees have a chance to spawn in their nests.
2
Blue Banded Bees
Spawns in nests in trees.
Breed with redstone bees to make lapis bees.
Neon cuckoo bees have a chance to spawn in their nests.
3
Green Carpenter Bees
Spawns in nests in trees.
Breed with yellow black carpenter bees to make lumber bees.
4
Yellow Black Carpenter Bees
Spawns in nests in trees.
Breed with green carpenter bees to make lumber bees.
5
Chocolate Mining Bees
Spawns in dirt, sand, and gravel nests.
Breed with glowing bees to make redstone bees.
Breed with digger bees to make quarry bees.
6
Digger Bees
Spawns in stone and gravel nests.
Breed with chocolate mining bees to make quarry bees.
7
Leafcutter Bees
Spawns in dirt and reed nests.
Breed with blazing bees to make coal bees.
8
Mason Bees
Spawns in dirt and reed nests.
Breed with crystalline bees to make gold bees.
9
Neon Cuckoo Bees
Found laying their eggs in blue banded bees nests.
10
Nomad Bees
Found laying their eggs in ashy mining bees nests.
Breed with magmatic bees to make blazing bees.
11
Reed Bees
Found in reed nests.
12
Resin Bees
Found in tree nests.
13
Sweaty Bees
Found in snow nests.
Breed with lumber bees to make rancher bees.