The white micrathena has 2 short pairs of tubercles and a white abdomen with a few distinct black blotches on the upper side. In an odd way, it looks like it's wearing a turban, which is what its scientific name, mitrata, refers to. This is one of three Missouri species of micrathenas, also called spiny orbweavers.
Like the vast majority of Missouri’s spiders, white micrathenas are a welcome help to gardeners. Micrathenas, with their closely spaced webs, are especially good at capturing mosquitoes, gnats, and other small flying insects.
Learn more about Missouri’s spiny orbweavers on their group page.
Length: to about ½ inch (excluding legs).