Ron's intense fear of spiders is a recurring theme in Harry Potter and throws back to an incident from his past.
Harry Potter: Acromantulas, Explained
JK Rowling shares terrifying photo of huge spider!
Why Harry Potter Franchise Failed Ron Weasley
Why Rupert Grint 'Had a Full-On Panic Attack' on the Set of 1 'Harry Potter' Movie
Harry Potter Stories and Tales on Tumblr: Imagine
Harry Potter: Why Ron Weasley Is Afraid Of Spiders? - IMDb
Rupert Grint Is Scared Of Spiders
Harry Potter: Ron Weasley's 15 Best Quotes
Harry Potter: The Funniest Ron Weasley Moments