Starfly Egg
Starfly Egg is a legendary throwable item.
Can be used to spawn a bug called 
starfly, a big beautiful butterfly made from stardust.
These “eggs” are really just highly incubated versions of creatures, used by altas during research, often for simulation purposes, which is why they tend to be friendly to their owner.
Ingame
Species descriptions:
- Alta: It feels pretty sturdy to the touch, and leaves some stardust glitter on you when it leaves.
Usage
Crafting
Can be used to craft:
Sources
Can be obtained via 
Spawnable Item Pack or 
Technical Information
- In-game ID:
ct_starfly_egg - Power:
3.5 - Rarity:
Legendary - Tags:
legendary,monster_egg,spawner,throwable - File:
/items/active/alta/spawners/bugs/ct_starfly_egg.activeitem