Field Guide

Walkingsticks are long, slender insects that are perfectly camouflaged to look like brown or green twigs. Most species are tropical, but some types are found in Missouri.

Be careful when approaching northern two-striped walkingsticks: They can squirt an acrid fluid at you. Musk mare, devil’s riding horse, and prairie alligator are all names for this remarkable stick insect.

Silverfish are known worldwide, since they commonly live in our homes. There are a number of species in this family of insects, including the common silverfish and the firebrat.

The brown recluse is a spider whose venomous bite may be medically significant to humans, though a bite is almost never fatal. Brown recluses are most commonly encountered in houses, where they occupy little-used drawers, closets, and other small hiding spaces.

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 Texas brown tarantula is our state's largest spider. The hairy body and legs are uniformly dark chocolate brown, with reddish hairs on the carapace. Look for it on dry, rocky glades in the southern half of the state.

In late summer and fall, woodland hikers can count on walking into the arrowhead spider's web. These webs are delicate circles that help the spider snare tiny flying insects.

The funnel-shaped web of grass spiders is more often noticed than the spider itself. It is sheetlike, usually positioned horizontally, with a funnel leading downward to a shelter (a rock crevice or dense vegetation) where the spider hides, waiting for prey.