As of Current there are 23 species and 8 families (branches) as default (core), but if other mods are added that add certain resources like lead then more species are available (addon). In total there are 18 addon bees and 1 branch.

There is also several added bee traits

Core Bees

Branches

Rocky

Rocky

produces: rocky combs

is the only bee found in hives (Rocky hives). There hives can be found in the overworld where there is large areas of exposed rock like what is found on extreme hills. There hives spawn with iron and coal ore around them even if it is higher than the maximum level iron normal spawns at.

Hardened

produces: rocky combs

created from: Rocky and Cultivated

Obsidian

produces: rocky combs and obsidian

created from: Hardened and Steadfast

Lapis

produces: rocky combs and lapis

created from: Obsidian and Imperial

Earth

Dirty

produces: Dirty combs

created from: Rocky and any default forestry hive bee

Clay

produces: Dirty combs and clay

created from: Dirty and Marshy

Sandy

produces: Dirty combs, sand, red sand

created from: Dirty and Modest

Crystal

Redstone

produces: Crystal combs and redstone

created from:Obsidian and Steadfast

Quartz

produces: Crystal combs and quartz

created from: Lapis and Sinister

Emerald

produces: Crystal combs and emerald fragments

created from: Redstone and Imperial

They must have an Emerald block or Emerald ore under their hive to produce emerald fragments.

Diamond

produces: Crystal combs and diamond fragments

created from: Emerald and Lapis

They must have a Diamond block or Diamond ore under their hive to produce Diamond fragments.

Apatite

produces: Crystal combs and Apatite

created from: Lapis and Redstone

Metal

Metallic

produces: Metallic combs

created from: Obsidian and Fiendish

Iron

produces: Metallic combs and iron dust

created from: Metallic and Industrious

Gold

produces: Metallic combs and gold dust

created from: Metallic and Imperial

Copper

produces: Metallic combs and copper dust

created from: Metallic and Industrious

Tin

produces: Metallic combs and tin dust

created from: Metallic and Industrious

Apocalyptic

Apocalyptic

produces: simmering combs, gunpowder, blaze powder and ghast tear

created from: Demonic and Austere in a nether biome

They must have TNT under the hive to produce gunpowder, blaze powder and ghast tears

Aquatic

Prismarine

produces: honey comb, primarine shards and crystals

created from: Clay and marshy in a ocean biome

Slimey

Slimey

produces: Slimey comb

created from:Rocky and Boggy

Wither

Withering

produces: Withering comb and wither skulls

created from: Apocalyptic and Demonic in a nether biome

They must have a Wither Skull on top of their hive to produce wither skulls.

Wither

produces: Withering comb and nether star fragments

created from: Withering and Ender in a nether biome

They must have a Wither Skull on top of their hive to produce nether star fragments.

Tropical (Forestry branch)

Stringy

produces: String comb, Silky comb and string

created from:Diligent and Tropical

Addon bees

Branches

Crystal

Certus Quartz

produces: Crystal combs and Certus Quartz Dust

created from: Quartz and Industrious

Ruby

produces: Crystal combs and ruby

created from: Redstone and Imperial

Sapphire

produces: Crystal combs and sapphire

created from: Redstone and Imperial

Sulfur

produces: Crystal combs and Sulfur dust

created from: Redstone and Feindish

Metal

Aluminium

produces: Metallic combs and Aluminium dust

created from: Metallic and Industrious

Lead

produces: Metallic combs and lead dust

created from: Metallic and Obsidian

Silver

produces: Metallic combs and silver dust

created from: Golden and Tin

Cobalt

produces: Metallic combs and Cobalt nuggets

created from: Tin and Demonic

Ardite

produces: Metallic combs and Ardite nuggets

created from: Copper and Demonic

Osmium

produces: Metallic combs and Osmium Dust

created from: Copper and Industrious

Nickel

produces: Metallic combs and Nickel dust

created from: Iron and Industrious

Platinum

produces: Metallic combs and Platinum dust

created from: Golden and Imperial

Iridium

produces: Metallic combs and Iridium dust

created from: Golden and Apocalyptic

Slimey

Blue Slimey

produces: Slimey comb and blue slime ball

created from: Slimey and Prismarine

Purple Slimey

produces: Slimey comb and purple slime ball

created from: Blue Slimey and Redstone

Magma Slimey

produces: Slimey comb and blue magma slime ball (not magma cream)

created from: Slimey and Fiendish

Radioactive

Radioactive

produces: Simmering combs and uranium ore

created from:Lead and Austere

Resonating

produces: Simmering combs and Resonating ore

created from: Radioactive and Redstone

Yellorite

produces: Simmering combs and Yellorite ore

created from: Radioactive and Redstone

Uranic

produces: Simmering combs and crushed uranium ore

created from: Radioactive and Apocalyptic in a nether biome

Ender

Draconic

produces: Mysterious combs and Draconium dust

created from: Austere and Ender in a nether biome