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Orthoptera

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Orthoptera is a diverse order of insects found all over the world. This group includes well-known creatures like grasshoppers, locusts, and crickets. It also contains relatives such as katydids, bush crickets, and wētā.

Variegated grasshopper (Zonocerus variegatus)
Variegated grasshopper (Zonocerus variegatus)

Scientists have identified more than 20,000 different species within this order. The name Orthoptera comes from Greek words meaning "straight wing."

Bladder Grasshopper (Bullacris intermedia) (30068047440)
Bladder Grasshopper (Bullacris intermedia) (30068047440)

Most members have cylindrical bodies and strong hindlegs designed for jumping. They also possess mandibulate mouthparts used for biting and chewing.

These insects communicate through a process called stridulation. This is the act of producing sound by rubbing body parts together. They may rub their wings against each other or rub their legs against their wings. These body parts contain rows of corrugated bumps that help create the noise.

Ceuthophiluscricket
Ceuthophiluscricket

To hear these sounds, they use a specialized organ called a tympanum, which acts as an ear. In crickets, mole crickets, and katydids, the tympanum is located on the front tibia. In grasshoppers and locusts, the ear is found on the first abdominal segment. These insects rely on vibrations to locate other individuals of their species.

Orthopterans are divided into two main suborders: Caelifera and Ensifera. The Caelifera suborder includes grasshoppers, locusts, and their close relatives. This group contains several superfamilies, such as Acridoidea, which includes locusts, and Pyrgomorphoidea, which includes gaudy grasshoppers.

Monkey hopper (14795010039)
Monkey hopper (14795010039)

The Ensifera suborder consists of crickets and their relatives. This group includes families like Grylloidea, which contains true crickets, and Tettigoniidae, which contains katydids. Each suborder is considered monophyletic, meaning they share a common evolutionary ancestor.

These insects undergo a life cycle known as incomplete metamorphosis, or paurometabolous development. This means they do not have a pupa stage like butterflies. Instead, they hatch from eggs laid in the ground or on plants as nymphs.

SGR laying
SGR laying

These young nymphs are often called "hoppers" and resemble miniature adults. However, they lack wings and often have much different coloration than adults. The nymphs must undergo successive moults, which is the process of shedding their skin to grow. They continue moulting until they reach the final stage of a mature adult with fully developed wings. This growth period can last from a few weeks to several months depending on weather and food.

Some species of Orthoptera can be significant pests to humans. Locusts are particularly famous for their ability to form massive swarms. A single swarm can contain up to 80 million individuals and cover 460 square miles.

A locust can eat up to its own body weight in a single day. Historically, these swarms have been known to wipe out entire fields of crops in one day. Grasshoppers can also cause agricultural damage, especially during droughts when they switch from eating weeds to eating crops.

Interestingly, many orthopterans are a regular part of the human diet. About 13% of all insects are edible, and humans regularly consume 80 species of grasshoppers.

Tetrix subulata 2
Tetrix subulata 2

In Thailand, house crickets are farmed extensively, with about 20,000 farmers working in 53 provinces as of 2012. In Ancient Greece, the writer Diodorus Siculus even referred to people from Ethiopia as "Acridophagi," meaning "eaters of locusts." In Judaism, certain locusts are considered kosher. The book of Leviticus provides an exception for specific hopping insects that have knees extending above their feet.

Beyond food, these insects are being studied for their potential in green technology. Scientists are interested in the guts of grasshoppers as a source for biofuel. They have the ability to break down cellulose and lignin. This process is useful because it does not produce greenhouse gases. This makes them a promising subject for research into alternative energy sources.

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🖼️ Images & Media (12)
File:Arachnocephalus vestitus01.jpg
Arachnocephalus vestitus01.jpg
File:Ceuthophiluscricket.jpg
Ceuthophiluscricket.jpg
File:Пальцепалый кузнечик.jpg
Пальцепалый кузнечик.jpg
File:Cricket September 2010-1.jpg
Cricket September 2010-1.jpg
File:Pygmy mole cricket (8071068977) cropped.jpg
Pygmy mole cricket (8071068977) cropped.jpg
File:Tetrix subulata 2.JPG
Tetrix subulata 2.JPG
File:Monkey hopper (14795010039).jpg
Monkey hopper (14795010039).jpg
File:Bladder Grasshopper (Bullacris intermedia) (30068047440).jpg
Bladder Grasshopper (Bullacris...
File:Variegated grasshopper (Zonocerus variegatus).jpg
Variegated grasshopper (Zonocerus variegatus).jpg
File:SGR laying.jpg
SGR laying.jpg
File:Garden locust (Acanthacris ruficornis).jpg
Garden locust (Acanthacris ruficornis).jpg
File:Peruvian Stick Bug.jpg
Peruvian Stick Bug.jpg
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