How Big Is a Small Spider

Spiders range in body length from 0.5 to about 90 mm (0.02–3.5 inches).

What is the size of the smallest spider?

Patu digua is a very small species of spider. The male holotype and female paratype were collected from Rio Digua, near Queremal, Valle del Cauca in Colombia. By some accounts it is the smallest spider in the world, as males reach a body size of only about 0.37 mm – roughly one fifth the size of the head of a pin.

Are small spiders dangerous?

Most common house spiders pose little threat to humans. While they may bite if they feel threatened, most bites are typically either harmless or cause only minor irritation.