An incredible amount of grasshopper species live in Colorado!

Trying to list them all would be impossible. 🙂

So below, you will find the most common and abundant insects found in the order Orthoptera. This includes not only grasshoppers but also crickets and katydids.

11 Grasshoppers in Colorado:

#1. Two-striped Grasshopper

Melanoplus bivittatus

Adults are typically 1.2 to 2 inches (3 to 5 cm) long.
They are usually green or tan, with two pale yellow stripes running along the top of their bodies from above their eyes to the hind tips of their wings.
They have green or buff hind tibia with black spines.

These grasshoppers are well adapted to various habitats in Colorado!

They can call so many areas home because of their diet. Two-striped Grasshoppers aren’t picky and will feed on grasses, herbaceous or woody plants, seed pods, flowers, and crops.

When food is scarce, Two-striped Grasshoppers scavenge on dead plants and animals. They also occasionally resort to cannibalism!

These grasshoppers can be a lot of fun to find and catch. However, many insect lovers have found out the hard way that Two-striped Grasshoppers are quick to bite when handled. 🙂

#2. Green-striped Grasshopper

Chortophaga viridifasciata

Adults are bright, grassy green with some pinkish brown on the legs and head.
They range in length from 1-1.5 in (23-38 mm)
Their wings are long and slender and usually a dull brown color.

Look for Green-striped Grasshoppers in moist areas of Colorado.

These insects are easiest to find in early summer when the adult females lay eggs. As the summer progresses, the grasshoppers move through the five stages of their life cycle. Because Green-striped Grasshoppers survive over winter and emerge as adults, they’re usually the first to appear in backyards!

You’re almost guaranteed to find these critters if you have a large yard or garden. They love to eat grass and other succulent plants, including many garden favorites!

#3. Carolina Grasshopper

Dissosteira carolina

Adults grow from 1.2-2.3 in (32–58 mm) in length.
Their coloring is a light brown to tan or gray, which allows them to hide in their environment.
They have large wings that flap dramatically in flight, and people often confuse them with butterflies.

Carolina Grasshoppers are found all over Colorado.

Their range includes many climates, and their diet varies depending on their habitat. For example, in pastureland or open fields, they primarily eat grasses. However, these grasshoppers will consume weeds and other less desirable plants in less fertile areas.

These grasshoppers are diurnal, meaning they are primarily active during the day and rest at night. However, don’t be surprised to find one near a light source in the late evening. They’re very attracted to lights! They live mostly on the ground and rarely climb or fly into trees.

#4. Differential Grasshopper

Melanoplus differentialis

Adults are usually shiny and yellow-brown.
They have brownish-yellow or brownish-red antennae and brown eyes with light spots.
Their upper hind legs are yellow with a black herringbone pattern, and their lower hind legs are yellow with black spines.

You may remember Differential Grasshoppers from hot summer days spent playing outside. They are one of the classic summer grasshoppers.

The best places to find these grasshoppers in Colorado are grasslands, but they will also inhabit vacant lots, open woodlands, roadsides, and croplands.

Their broad appetite helps them adapt to different areas. These grasshoppers feed on grasses, fruit trees, and crops.

If you’ve ever tried to catch one, you’ve probably noticed that Differential Grasshoppers are talented fliers. They can travel 10 to 100 yards in a single flight!

#5. Red-legged Grasshopper

Melanoplus femurrubrum

Adults typically range from 0.67 to 1.2 inches (1.7 to 3 cm) long.
Their color varies from reddish-brown to yellow, dark brown, green, or olive green. Their bright red or yellowish hindlegs feature a black herringbone pattern.
Their wings typically extend beyond the tip of their abdomen.

You may have spotted these grasshoppers in Colorado flying away as you walk through open habitats like yards, croplands, open floodplains, vacant lots, meadows, and prairies. When startled, they can fly distances of 40 feet (12.2 m)!

These grasshoppers have to be quick to stay alive. They’re an important food source for wildlife like turkeys and quail.

Red-legged Grasshoppers feed on various grasses and other plants, including goldenrod, dandelion, clover, and vetch. But interestingly, when food is scarce, Red-legged Grasshoppers develop longer wings, allowing them to fly to new areas searching for food.

#6. Fork-tailed Bush Katydid

Scudderia furcata

Adults usually range from 1.5 to 1.75 inches (3.8 to 4.4 cm) long.
They are leafy-green with long green antennae but may have pinkish, brownish, or rusty tinges, especially in autumn.
Females have a brownish or purplish ovipositor, a sword-like appendage at the tip of their abdomen.

These katydids make one of the classic sounds of the night in Colorado.

Fork-tailed Bush Katydids are one of about 250 species of katydids or “bush crickets” found in North America. Unlike true grasshoppers, they spend most of their time in trees and shrubs and rarely descend to the ground.

These bright green insects are nocturnal. They spend their nights feeding on the flowers, foliage, and fruit of the trees and shrubs they call home. Don’t worry, gardeners; they rarely cause significant damage.

Katydids can be incredibly hard to spot because they blend perfectly with the leaves. If you get lucky, you may spot one on a tree trunk or around an outdoor light at night.

If you find a katydid, you should handle them with care. While not aggressive, they can give a good pinch if handled roughly.

#7. Fall Field Cricket

Gryllus pennsylvanicus

Adults are 0.6–1.0 in (15–25 mm) long.
Their coloring is dark brown to black, sometimes with a reddish tint.
They have very long antennae and short wings.

This species is one of the most widespread crickets in Colorado.

Fall Field Crickets are relatively large and easy to spot because of their dark color. As their name suggests, they live in open fields and yards with plenty of grass, their preferred food source. They also eat small invertebrates and insect eggs.

If you’ve heard these crickets chirping on a late summer evening, you know their call can be extremely loud! The males perform their call to attract females so that they can reproduce.

#8. Mormon Cricket

Anabrus simplex

Adults grow up to 3 inches (8 cm) long.
Most individuals are dark brown to black, although some females are bright green.
They have large, stocky bodies and relatively short legs.

Mormon Crickets are one of the largest crickets in Colorado!

Although their common name suggests they are crickets and look similar to grasshoppers, they are actually members of the shield-backed katydid family. You can see this hard outer shell in close-up pictures. Just look for the plate extending from the back of the head to the abdomen.

Although their population is usually rather low, swarms of Mormon Crickets do occur occasionally. These swarms form bands of crickets up to 100 per square meter, posing safety risks. For example, if a band of crickets crosses a highway, drivers can become distracted. Crickets crushed on roadways can even cause slippery conditions similar to ice!

#9. Greater Anglewing

Microcentrum rhombifolium

Adults are 2.0–2.6 in (50–65 mm) long.
They are bright green to yellowish.
Their broad and leaf-like wings come to a sharp peak above their bodies.

You can find Greater Anglewings among shrubs and trees in Colorado, but picking them out can be difficult! These katydids are masters of camouflage, with wings that mimic leaves and coloring that helps them blend right in.

Adults are active in late summer through fall. Listen for their call, which is a series of clicks in an even pattern, repeated 10-20 times in a row.

#10. Crackling Forest Grasshopper

Trimerotropis verruculata

Adults are 1-1.5 in (28-38 mm) long.
Their coloring is a dull grayish-brown with light gray markings. It resembles granite.
They have stout, compact bodies and very short legs.

Crackling Forest Grasshoppers are found in mountainous forests in Colorado.

Their common name comes from the cracking noise they make in flight.

Their coloring is particularly useful as camouflage against their normal habitat, which includes rocky slopes, mountain ledges, and open mountain forests. They primarily eat grasses and forbs.

#11. Pallid-winged Grasshopper

Trimerotropis pallidipennis

Adults may grow to 1.5 inches (3.8 cm) long.
Adults are variable in color but are primarily gray or gray-brown with dark bands on their forewings and yellowish hind tibiae.
Their hind wings are long, narrow, and pale yellow with greenish or bluish at the base and a narrow dark band.

These drably colored grasshoppers typically live in deserts or dry areas in Colorado.

They like areas with sparse vegetation and bare ground, such as roadsides, vacant lots, and fields. Their coloring helps them blend in with the ground.

Some of the Pallid-winged Grasshopper’s behavior is dependent on the temperature. They tend to spend time foraging when temperatures are 75–90 °F (24–32 °C) and breed when they are 86–104 °F (30–40 °C).

Occasionally, Pallid-winged Grasshoppers will have localized population booms that can cause severe damage to vegetation and crops. These outbreaks may last a year or two.

Rainfall is a major factor in the survival of Pallid-winged Grasshopper eggs. The large outbreaks of these grasshoppers are associated with above-average rainfall levels in the previous fall, winter, and early spring.

Did you like learning about the grasshoppers that live in Colorado?

Check out these ID guides that focus specifically on different insects and arachnids in Colorado.

Do you need additional help identifying grasshoppers in Colorado?

If so, check out this excellent ID guide!

National Audubon Society Field Guide to Insects of North America

11 Grasshopper Species found in Colorado!