Field Guide

Land Invertebrates

Showing 1 - 10 of 43 results
Media
Photo of a female openfield orbweaver spider crouching on a plant stalk
Species Types
Scientific Name
Araneus pratensis
Description
The openfield orbweaver is a common nocturnal orb-weaving spider in Missouri.
Media
Photo of an armored harvestman walking on the ground
Species Types
Scientific Name
Members of suborder Laniatores
Description
Armored harvestmen have spines on their fingerlike mouthparts (pedipalps). Unlike other harvestmen, members of this suborder of so-called daddy longlegs do not usually have long legs.
Media
Photo of a northern crab spider
Species Types
Scientific Name
Mecaphesa asperata
Description
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.
Media
Photo of a swift crab spider, female, from above.
Species Types
Scientific Name
Mecaphesa celer (formerly Misumenops celer)
Description
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.
Media
Photo of a green crab spider on a leaf
Species Types
Scientific Name
Misumessus oblongus (formerly Misumenops oblonga)
Description
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.
Media
Photo of a female arabesque orbweaver spider
Species Types
Scientific Name
Neoscona arabesca
Description
The arabesque orbweaver is a common orb-weaving spider in Missouri. The coloration is quite variable, but the slanting dark marks on the abdomen help to identify it.
Media
Photo of a dotted wolf spider
Species Types
Scientific Name
Rabidosa punctulata
Description
The dotted wolf spider has a solid brown stripe running down the middle of the abdomen, seen from above. Like other wolf spiders, females have strong maternal instincts, carrying their spiderlings around on their back until they can be on their own.
Media
Image of a speckled wolf spider
Species Types
Scientific Name
Tigrosa aspersa
Description
A speckled wolf spider usually seems larger than it actually is. It's one of Missouri's more common species of wolf spiders. Mothers have remarkable maternal instincts and are often seen carrying their young around on their abdomen.
Media
Photo of wolf spider with young
Species Types
Scientific Name
Rabidosa rabida
Description
The rabid wolf spider, despite its scary name, is harmless to people and is absolutely not rabid. It commonly hides in leaf litter and sometimes gets into houses.
Media
Photo of a spotted orbweaver or barn spider, Neoscona crucifera, with black background
Species Types
Scientific Name
Neoscona spp.
Description
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.
See Also
Media
Photo of a Yellow-Collared Scape Moth
Species Types
Scientific Name
Cisseps fulvicollis
Description
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!
Media
image of Plume Moth on blade of grass
Species Types
Scientific Name
Nearly 150 species in North America north of Mexico
Description
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.
Media
Photo of an Isabella Tiger Moth
Species Types
Scientific Name
Pyrrharctia isabella
Description
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.