Problem Evil into Cocoon

Are monsters all big?
I connive on a twig,
Head to heel, head to heel,
Aloof in chenille.
Arrogant worm, is my name,
Ugly worm, they exclaim.
I warp to a hood.
I filter no good.
As horror as whale,
Malignant as eel,
As stinging, as male;
In a sheathe of chenille.

So fester on dews,
On my moss of chartreuse.
And if men come me nigh
Make a fright for near eye.
Arrogant worm, is my name.
Ugly worm, they exdaim.
Next make, next transform
Me more evil than worm.
My stupor I obey;
Erupt will I from this sack,
Monster as huge as day
And black as night is black.