Grasshopper Insect: Facts, Life Cycle, Habitat, and Scientific Name

The grasshopper is a plant-eating jumping insect of the order Orthoptera, easily recognized by its long hind legs, chewing mouthparts, and the chirping song produced by the males. In our region the green and grey grasshoppers are the most familiar. These insects live for a single year: the adults die in autumn, and in spring a new generation hatches from eggs that overwintered in the soil.

Grasshoppers grow slowly. By early June they reach a length of about half a centimetre, and the first faint chirping is usually heard toward the end of June. Only after the sound-producing apparatus has fully formed do the males begin to give their concerts. The famous French entomologist Jean-Henri Fabre remarked that there are no true singers among insects, but there are many fine musicians.

Classification and taxonomy of grasshoppers

Grasshoppers belong to the order Orthoptera, which splits into two large suborders distinguished mainly by antenna length: Caelifera, the short-horned grasshoppers, and Ensifera, the long-horned grasshoppers, crickets and katydids. The insects most people picture as "grasshoppers" — the short-horned, ground-dwelling jumpers — sit within the superfamily Acridoidea and the family Acrididae, the largest grasshopper family with thousands of described species. A second notable family, Romaleidae, contains the heavier-bodied lubber grasshoppers.

Grasshoppers are among the oldest living insect groups, with a fossil record reaching back more than 250 million years to the early Triassic, well before flowering plants and most modern insects appeared. This long evolutionary history helps explain their enormous diversity and near-global distribution today.

How grasshoppers differ from crickets, katydids and locusts

The quickest way to separate a grasshopper from a cricket or katydid is to look at the antennae and listen to how the song is made. True grasshoppers (Caelifera) have short antennae, usually shorter than the body, while katydids of the family Tettigoniidae — such as the great green bush-cricket Tettigonia viridissima or the meadow katydid Orchelimum vulgare — have long, thread-like antennae and belong to the suborder Ensifera. Grasshoppers also tend to be active by day, whereas many crickets and katydids sing at night.

Locusts are not a separate family but certain grasshopper species that change behaviour and form under crowded conditions. When population density rises, species in the genera Locusta and Schistocerca shift from a solitary phase into a gregarious phase, altering colour, body shape and behaviour, and gather into migrating swarms. The notorious desert locust, Schistocerca gregaria gregaria, is the classic example. In short, every locust is a grasshopper, but most grasshoppers never become locusts.

Description of the grasshopper

A grasshopper's body is built for jumping, chewing plants and detecting its surroundings, divided into the three insect regions of head, thorax and abdomen. Looking closely you can see long thin antennae on the head, large compound eyes on either side, and a mouth armed with powerful jaws used to grip and chew. The insect has three pairs of legs, and the large hind legs are the engines of its famous leap.

Body structure and sense organs

The grasshopper's senses are distributed across its body in ways that surprise people who expect everything to be on the head. The large compound eyes give a wide field of view, three simple eyes (ocelli) detect light intensity, and the antennae carry organs of touch and smell. Most striking of all, the hearing organs are not on the head but on the front of the abdomen — a pair of membrane-covered tympana that let the grasshopper detect the songs of its own kind and the approach of predators.

It is sometimes said that grasshoppers and their relatives "listen with their legs," and for the long-horned katydids this is literally true: in many Ensifera the hearing organs sit on the front legs, in the tibia. In the short-horned grasshoppers the tympana lie at the base of the abdomen instead. Either way, the auditory organs are remote from the head, an arrangement well suited to insects whose communication relies heavily on sound.

Colour variation and camouflage

Grasshopper colouring is mostly an adaptation for hiding from predators, dominated by greens and browns that match grass, soil and dry vegetation. Many species can vary their colour to suit the background, blending so well that they are almost invisible until they move. Some, such as the Carolina grasshopper and the longhorn band-wing grasshopper, conceal brightly banded hind wings beneath drab forewings; a sudden flash of colour in flight can startle a predator, which then loses the insect when it lands and the colour vanishes again.

Flying ability and escape from predators

Grasshoppers combine a powerful jump with flight to escape danger fast. As the insect launches, the wings open and it can glide or fly a short distance before landing. The two pairs of wings have different roles: the narrow, leathery forewings (the tegmina, or in everyday terms the wing-cases) protect the body and house the sound apparatus, while the broad, fan-like hind wings provide lift. This jump-then-fly combination, paired with cryptic colouring, makes a startled grasshopper hard for birds, lizards and small mammals to catch.

Life cycle and development of the grasshopper

The grasshopper develops through incomplete metamorphosis, passing from egg to nymph to adult without a pupal stage. Eggs laid in the soil the previous autumn overwinter and hatch in spring. The young nymphs resemble small wingless adults and grow through a series of moults — typically five or six instars — gaining functional wings only at the final moult into adulthood. The whole cycle fits within a single season, which is why the adults die off in autumn after the next generation of eggs is in the ground.

Reproduction and egg-laying

Grasshoppers mate in late summer, after which the females lay their eggs in the soil to overwinter. The female has a sabre-shaped ovipositor at the end of the abdomen, which she uses to deposit clusters of eggs into the ground, often in pods sealed with a frothy secretion that protects them through winter. The number of eggs and the timing of hatching depend heavily on temperature and moisture, so warm, dry springs and summers tend to produce larger, healthier populations.

When and why grasshoppers chirp

Grasshoppers chirp to attract mates and mark territory, and only the males sing. The song is produced in the wing region: the wing-cases overlap, and as the grasshopper draws them together and apart the rasping motion produces the familiar chirping. The most vigorous chirping comes in July and August once hot, dry weather has set in.

The sound apparatus and acoustic communication

Grasshopper song is made by stridulation — rubbing one body part against another to create sound. In short-horned grasshoppers the insect typically draws a row of tiny pegs on the inside of the hind leg across a hardened vein on the forewing, much like running a thumbnail along a comb. Each species produces a characteristic pattern of pulses, which lets females recognize males of their own kind by ear. Because the song carries information about species, fitness and location, it functions as a genuine communication channel rather than mere noise.

Forecasting the weather by the chirping

External conditions strongly influence whether grasshoppers chirp at all. In rainy weather they fall silent, and they often stop even on a clear day before rain arrives, so a sudden hush in the meadow can hint that the weather is about to change. By listening to the insects' song you can forecast the weather in a rough but surprisingly useful way.

Habitat and geographic distribution

Grasshoppers are found on every continent except Antarctica, occupying grasslands, meadows, rangelands, forest edges, wetlands and farm fields. Their global reach reflects their ancient lineage and broad diet, with diversity peaking in warm, grassy and semi-arid regions. Species composition varies sharply from place to place: prairies and rangelands of North America host different communities than the savannas of Africa or the river margins favoured by the aquatic-plant feeder Cornops aquaticum in South America.

Regional examples show how local the picture can be. In Illinois, common species documented by University of Illinois Extension include the differential grasshopper (Melanoplus differentialis), the two-striped grasshopper (Melanoplus bivittatus) and the red-legged grasshopper (Melanoplus femurrubrum). In the rangelands of Utah, work by Utah State University (USU) highlights the migratory grasshopper (Melanoplus sanguinipes) among the species of greatest concern, while the large American bird grasshopper (Schistocerca americana) and the heat-loving Egyptian grasshopper (Anacridium aegyptium) illustrate the diversity found in warmer climates.

Diet and feeding behaviour

Grasshoppers are primarily herbivores, feeding on leaves, stems, flowers and seeds, though many will scavenge and a few take other insects opportunistically. The powerful jaws chew plant tissue, which then passes through a digestive system adapted to break down tough, fibrous vegetation. Because a single grasshopper eats a large share of its body weight in plant matter each day, dense populations can strip vegetation quickly.

Host plants of grasshoppers

Grasshopper host-plant preferences vary by species, with some feeding broadly across many plants and others specializing on grasses or specific crops. Generalist pest species readily attack cultivated cereals, alfalfa, vegetables and garden plants, which is why they matter so much to agriculture, while specialists such as Cornops aquaticum concentrate on particular aquatic or wetland plants. Knowing which host plants a local species prefers helps growers anticipate where damage will appear first.

The grasshopper as an agricultural pest

Grasshoppers are among the most damaging insect pests of crops and rangelands, especially during outbreak years driven by warm, dry weather. Outbreaks are strongly tied to climate: hot, dry summers favour egg survival and nymph development, so several consecutive warm seasons can build populations to damaging levels. Extension specialists such as Erin Hodgson at Iowa State University, along with programs at Colorado State University, North Dakota State University and Auburn University, monitor these dynamics and advise growers each season.

Damage to crops and rangelands

Grasshoppers cause economic damage by consuming foliage, defoliating crops and competing with livestock for forage on rangelands. In severe years the losses across western rangelands run into the tens of millions of dollars, and the most dramatic harm comes from swarming locusts. The desert locust, Schistocerca gregaria gregaria, can form swarms covering many square kilometres and containing tens of millions of insects per square kilometre; the Food and Agriculture Organization tracks such swarms because of the threat they pose to food security across Africa, North Africa and parts of Asia, in regions from Egypt and Uganda through to the wider continent.

One North American species shows how serious outbreaks can become — and how they can end. The Rocky Mountain locust, Melanoplus spretus, once formed some of the largest insect swarms ever recorded across North America before going extinct around the turn of the twentieth century, a reminder that grasshopper population dynamics can swing to dramatic extremes.

Methods of grasshopper control

Grasshopper management combines scouting, monitoring and well-timed treatment, choosing between area-wide and spot strategies depending on the scale of the infestation. The U.S. Department of Agriculture, through USDA-APHIS, coordinates cooperative rangeland programs that survey populations and organize area-wide treatments where outbreaks cross many ownerships, while individual growers handle smaller, localized hot spots with spot treatments.

• Scouting and monitoring: count nymphs in spring along field margins and rangeland to gauge density and decide whether treatment is justified.
• Spot versus area-wide treatment: treat isolated infested patches early to halt spread, or coordinate large-scale area-wide programs when outbreaks span wide regions.
• Chemical control: common insecticides used against grasshoppers include carbaryl, malathion and acephate, applied as sprays where populations exceed economic thresholds.
• Bait and dust formulations: carbaryl baits are widely used because they target feeding grasshoppers while sparing many beneficial insects, and dusts offer another delivery option.
• Biological control: natural enemies and pathogens, including the fungus Entomophthora grylli that infects and kills grasshoppers during humid conditions, help suppress populations.

Natural predators and parasites keep most grasshopper populations in check during normal years. Birds, lizards, spiders, rodents and predatory insects all take a heavy toll, while parasitic flies and wasps attack eggs and nymphs, and diseases such as Entomophthora grylli sweep through dense populations in wet weather. This natural pressure is why true outbreaks usually require an unusual run of favourable conditions.

The grasshopper as fishing bait

The grasshopper makes excellent live bait for freshwater fishing, prized because it is abundant, easy to collect and irresistible to surface-feeding fish. The chub bites especially well on a grasshopper, and so does the ruffe. Hooked lightly so it stays lively, a grasshopper drifted along grassy banks in summer can be one of the most effective natural baits available. For more seasonal tips, see our fishing section.

Interesting facts about grasshoppers

Beyond the meadow and the fishing line, grasshoppers carry a surprising amount of cultural, nutritional and ecological significance. The following facts pull together threads from cuisine, science and folklore.

• A traditional food in many cultures: grasshoppers are eaten around the world, from chapulines in Oaxaca, Mexico, to street foods in China, the Philippines and across parts of Africa, where they provide a cheap, plentiful source of protein.
• A sustainable protein source: the Food and Agriculture Organization has highlighted edible insects as an environmentally efficient protein, since farming insects generally needs far less land, water and feed than raising livestock; culinary institutions such as the Institute of Culinary Education have explored insect cooking, and grasshoppers are rich in protein and micronutrients.
• Star specimens in museums and media: grasshoppers and locusts feature in collections and reporting from institutions such as the Royal Ontario Museum, the University of Michigan and National Geographic, reflecting longstanding scientific interest in groups like Acrididae.
• A presence in literature: grasshoppers and their relatives appear in classic writing, including the works of Shakespeare, underscoring how deeply these insects are woven into human culture.
• Listening with the body, not the head: because their hearing organs sit on the abdomen or legs rather than the head, grasshoppers genuinely perceive sound through parts of the body we never associate with ears.

For more on crops, pests and the practical side of cultivation, explore our Agriculture articles, and browse the Nature section for related pieces on the wildlife around us.