Field Guide

Land Invertebrates

Showing 1 - 10 of 50 results
Moth fly resting on a white surface, viewed from above
Moth Flies
Members of subfamily Psychodinae
Moth flies look like tiny, hairy moths. People usually notice them perching next to sinks in the bathroom or kitchen. When disturbed, they usually don't fly very far before landing again, for they are weak fliers.
Citrus flatid planthopper on twig
Citrus Flatid Planthopper
Metcalfa pruinosa
The citrus flatid planthopper has a waxy coating and can look gray or tan. It eats a wide variety of plants.
Photo of a northern crab spider
Northern Crab Spider
Mecaphesa asperata
The northern crab spider has many spiny hairs covering the top surfaces of the carapace, abdomen, and legs, and it has usually has greenish-yellow or yellow-brown markings.
Photo of a swift crab spider, female, from above.
Swift Crab Spider
Mecaphesa celer (formerly Misumenops celer)
The swift crab spider has many spiny hairs covering the top of its body and legs, and it often has a light pinkish-tan cast.
Photo of a green crab spider on a leaf
Green Crab Spider
Misumessus oblongus (formerly Misumenops oblonga)
The green crab spider has spines, and the entire body and legs are pale green to silvery white. Like other crab spiders, its legs extend outward from the sides, and it can walk in any direction.
image of Nut Weevil on wood
Nut Weevils (Acorn Weevils)
Curculio spp.
Nut and acorn weevils, in genus Curculio, have very long, narrow beaks and chunky bodies. Females bore tiny holes into developing acorn, hickory, or other nuts, and deposit their eggs within.
Photo of a spotted orbweaver or barn spider, Neoscona crucifera, with black background
Spotted Orbweavers
Neoscona spp.
Missouri's Neoscona spiders, called spotted orbweavers, can be hard to identify to species. Most have camouflage patterns, and they all make the characteristic, delicate, wheel-shaped webs to catch prey.
image of a Midge
Midges
Nearly 1,100 species in North America
Midges are dainty flies that resemble mosquitoes. They often dance together in the air in huge swarms. Unlike their problematic cousins, they are harmless and do not bite.
several yellow aphids on plant
Aphids
More than 1,300 species in North America north of Mexico
Aphids are common, small, soft-bodied insects that suck plant juices. To see them well, you probably need a hand lens, but the damage they do to plants can be all too obvious!
image of a Leafhopper on leaf
Leafhoppers
More than 3,000 species in North America north of Mexico
The leafhoppers are a large and diverse family of sap-sucking, hopping insects. You can distinguish them from similar groups of hoppers by the hind legs, which have at least one row of small spines on the hind tibiae (“shins”).
See Also
Photo of a Yellow-Collared Scape Moth
Yellow-Collared Scape Moth
Cisseps fulvicollis
The yellow-collared scape moth is more often “orange-collared.” And whether you think it looks more like a firefly or a wasp, it’s still a moth!
image of Plume Moth on blade of grass
Plume Moths
Nearly 150 species in North America north of Mexico
Slim, delicate plume moths are instantly recognizable by their T-shaped silhouette, long legs, and muted shades of tan and brown. It can be hard to separate the various species.
Photo of an Isabella Tiger Moth
Isabella Tiger Moth (Woolly Bear; Woolly Worm)
Pyrrharctia isabella
Not many people know the adult Isabella tiger moth when they see one, but we’re all acquainted with its caterpillar, the woolly worm, or woolly bear.

About Land Invertebrates in Missouri

Invertebrates are animals without backbones, including earthworms, slugs, snails, and arthropods. Arthropods—invertebrates with “jointed legs” — are a group of invertebrates that includes crayfish, shrimp, millipedes, centipedes, mites, spiders, and insects. There may be as many as 10 million species of insects alive on earth today, and they probably constitute more than 90 percent all animal species.