What insect looks like a tiny crab?

I saw a tiny bug that looks like a small crab. What could it be?

A couple of options spring to mind that match the description of a small, crab-like bug: crab spiders and pseudoscorpions.  

Crab spiders

Crab spiders are small spiders that resemble crabs. They are small (typically less than half an inch long), flat-bodied, and named for their crab-like shape and sideways movement. Common across the U.S., these spiders are often found on flowers, plants, and shrubs, where they wait in ambush for prey. Unlike web-building spiders, crab spiders rely on camouflage—many can change color to blend in with blossoms or foliage. They’re typically yellow, white, brown, or green, with front legs that extend outward like a crab’s claws. Crab spiders are harmless to humans and actually help control garden pests by feeding on insects.

Pseudoscorpions

Another option for a bug that looks like a crab is the pseudoscorpion, or false scorpion. Smaller than crab spiders, these crab-like bugs are not true scorpions or insects, but tiny arachnids that use their pincers to catch even smaller pests.

A pseudoscorpion looks like a little crab with claws but no tail or stinger. They’re very small—usually only 1/16 to 1/8 of an inch long—with flat, pear-shaped bodies and noticeable pincers. You might find them in your home, garage, or car, especially in dark or dusty corners. They also live outdoors under bark, leaf litter, or stones. Common throughout the U.S., pseudoscorpions are actually helpful—they feed on mites, booklice, and other small pests.

So, if you find a crab-looking bug in your space, there’s no need to panic—it’s probably just nature’s tiny pest control expert at work. But if you’re still unsure and concerned about any bugs in your home, contact our pest control services for expert advice.