How to get silkworm butterfly?

You'll need the level 6 lamp. Get the cocoon from the lamp, which spawns cocoons into empty adjacent spaces over time. There will be a timer on the cocoon, wait til it expires then you can tap it to get a moth.

To get a silk butterfly you need to first create lamps from lightbulbs from the car. Next click the lambs to get silk cocoons. Next let the silk cocoon sit to generate a level 1 silk butterflie.