They discovered a rare fossilized specimen of a spider that imitates ants. This ant-mimicking spider, called Myrmarachne colombiana, was found preserved— fossilized in copal resin from Medellin ...

Myrmecophiles are arthropods that live in or near ant nests and are considered true symbionts. The literature and natural history information about spider myrmecomorphs and myrmecophiles are reviewed.

just like ants, which birds steer clear of to avoid nasty bites. Over the course of their lives, these spider copycats mimic two ant species, taking on the appearance of a bigger ant as they mature.