Field Guide

Land Invertebrates

Showing 21 - 30 of 51 results
image of Bee Fly on leaf
Bee Flies
About 800 species in North America
Resembling bees, or sometimes big, fuzzy mosquitoes, bee flies are a family of true flies and are not bees at all. Lacking the ability to sting, their bee mimicry helps them avoid many would-be predators.
Robber fly, genus Efferia, male, perched on a white-painted post
Robber Flies
More than 1,000 species in North America
Robber flies are aerial predators of a variety of insects. They often perch in conspicuous locations and make short flights chasing prey.
image of a Carolina Grasshopper
Short-Horned Grasshoppers
About 620 species in North America
The short-horned grasshopper family includes many familiar jumpers. They are named for their antennae, which are relatively short compared to those in the "long-horned" or katydid group.
Photo of a male Banded Pennant dragonfly
Dragonflies
Species in the suborder Anisoptera
Like damselflies, dragonflies have long bodies, two pairs of long, membranous, finely veined wings, and predaceous aquatic larvae. Dragonflies typically hold their wings stretched outward, horizontally.
Narceus Millipede crawling across gravel
Millipedes
More than 900 species in North America north of Mexico
Millipedes, which have two pairs of legs per body segment, are harmless detritus-eaters, move slowly, and curl up defensively when harassed.
Asian longhorned beetle male, specimen
Asian Longhorned Beetle
Anoplophora glabripennis
An unwanted arrival from Asia that's now living in parts of the United States, the Asian longhorned beetle could destroy millions of acres of American hardwoods. Report any sightings immediately.
Image of a female Argiope garden spider.
Black-and-Yellow Garden Spider
Argiope aurantia
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.
banded or white backed garden spider in web
Banded Garden Spider
Argiope trifasciata
The banded, or white-backed garden spider is slightly smaller than the black-and-yellow garden spider and has a pointier hind end. The abdomen is patterned with many thin silver and yellow transverse lines and thicker black, spotty lines.
image of Xystodesmid Millipede crawling on a forest floor
Xystodesmid Millipedes
8 tribes, with about 23 genera, in North America north of Mexico
Millipedes in family Xystodesmidae often have bright colors that serve as a warning to potential predators that they may secrete foul or toxic substances.
Long-legged wasp grasping a wolf spider while clinging to house siding
Entypus Spider Wasps
Entypus aratus, E. unifasciatus, E. fulvicornis, and others
Spider wasps in genus Entypus are bluish black and usually have some amount of amber color on their dark, smoky wings. Some species have bright yellow antennae.
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.