Field Guide

A wolf spider doesn't spin webs to catch its prey — it runs it down like a wolf! Spiders in this family have long legs and are usually gray, brown, black, or tan with dark brown or black body markings (especially stripes).

The bold jumper, or white-spotted jumping spider, is fuzzy, makes jerky movements, jumps surprisingly long distances, and doesn't build webs. It usually has a black body with white, orange, or reddish spots on the abdomen.

The black-and-yellow garden spider is large but harmless. It sets up large, circular webs in gardens and grasslands. Lucky gardeners can host this remarkable pest exterminator all season long.

Daddy longlegs, or harvestmen, are familiar Missouri animals. They are not spiders, but opilionids. Unlike spiders, they have a fused body form and lack silk and venom glands.

The filmy dome spider is one of the most abundant woodland spiders in Missouri. Although the spider is tiny, its snare web, which looks like an upside-down silk bowl, is conspicuous throughout the year.

The color pattern can vary, but the ten-spined, chunky abdomen sets the female spined micrathena apart from all other spiders.

Striped bark scorpions are pale yellowish brown, usually with two lengthwise dark stripes on the abdomen. It is the only species of scorpion in Missouri. It occurs in glades and other dry, warm, rocky areas, and sometimes in buildings and shelters and under piles of wood, brush, or garbage.

Pillbugs, roly-polies, woodlice, and sowbugs — the terrestrial members of order Isopoda are familiar to anyone who has overturned a rock. But what do you really know about them?