[header] How to identify a brazilian wandering spider [title] Watch out for 6-inch (15 cm) long spiders with leg span. [step] Adult brazilian wandering spiders have a body that's about 2 inches (5 cm) large. Their leg span, which may be easier to recognize, is about 6 inches (15 cm) in length. 
Exercise caution any time you see a spider that's this large. [title] Expect spiders to be brown and hairy.