Lena Torres
Cicadas are insects known for their loud mating calls, which can reach up to 100 decibels, comparable to the volume of a revving motorcycle engine. They are found all over the world, with the majority in tropical climates. Cicadas typically spend most of their lives underground, emerging after 13 or 17 years to reproduce before dying. In New England, specifically Massachusetts, cicadas are expected to emerge in late May or early June, creating a loud swarm of insects. While they are harmless, their noise can be considered a nuisance. This natural phenomenon is set to occur in 2025, with the bulk of the swarm expected in Rhode Island and Cape Cod.
| Characteristics | Values |
|---|---|
| Cicada species in New England | XI |
| Cicada emergence triggers | Soil temperature of 64 degrees Fahrenheit at a depth of 12-18 inches |
| Number of cicadas per acre | 1.5 million |
| Cicada call characteristics | Chorus, three stages of courtship calls, female wing flicks |
| Cicada call volume | 80-100 decibels |
| Cicada mating call | Male cicadas make loud shrill sounds to attract females |
| Cicada mating call volume | Exceeds 100 decibels |
| Cicada mating call timing | Summer and early fall months |
| Cicada mating call frequency | Every 13 or 17 years |
| Cicada sound comparison | Garbage disposal, lawn mower, or jackhammer |
| Factors influencing cicada numbers | Number of trees, local chemical use, human development, number of impervious surfaces |
| Cicada vulnerability | Highest right after shedding their shells |
| Cicada lifespan | Less than two months |
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What You'll Learn
Cicadas in New England reach up to 100 decibels
Cicadas in New England can reach up to 100 decibels, which is as loud as a jackhammer. This noise is produced by male cicadas as mating calls, and it can be obnoxious and unpleasant to human ears. However, it is an important way for cicadas to find each other and reproduce within a short time frame.
The loud sound is created by the rapid buckling and unbuckling of drum-like structures called tymbals, which are located where the wing meets the body. This process results in a clicking sound that, when repeated rapidly, is perceived by humans as a constant hum. While the mating call is the loudest, there are also quieter courtship songs produced by males after a female has been drawn to the calling song.
Cicadas spend most of their lives underground, emerging after 13 or 17 years to reproduce and die within a few days. The emergence is triggered when the soil reaches a temperature of about 64 degrees Fahrenheit at a depth of 12-18 inches. In ideal conditions, up to 1.5 million cicadas can appear in any given acre, although this number varies depending on factors such as the number of trees and human development in the area.
The periodical cicada, specifically the genus Magicicada, is the exception to the annual life cycle, with broods emerging en masse every 13 or 17 years. This synchronized emergence provides a better chance of finding a mate and producing offspring before they are eaten by predators or die naturally. In 2024, a rare swarm of cicadas occurred in New England, with the last recorded instance being in 1803.
The loud noises produced by male cicadas can be disruptive to humans, but it is a natural and important part of the cicada life cycle. These insects play a crucial role in various ecosystems, providing food for many species of animals. While their loud mating calls may be a nuisance, it is a testament to their resilience and ability to adapt and survive.
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Cicadas are loudest during mating calls
Cicadas are insects that spend most of their lives underground, feeding on tree root sap. They only emerge once the soil reaches a certain temperature, usually in May or June. During this time, they flock to the highest part of the trees to mate.
Male cicadas produce loud buzzing or clicking sounds to attract females for mating. These sounds are produced through specialized structures called tymbals, which are located on their abdomens. The tymbals are thin, ribbed membranes that are connected to their muscles. When the muscles contract, the tymbals buckle inward, creating a clicking sound. This process is repeated rapidly, resulting in a continuous buzzing or clicking sound. The loudness of these calls, which can reach up to 100-120 decibels, helps male cicadas reach potential mates over long distances and deter rival males.
The intensity and frequency of the noise can vary depending on the species, temperature, and time of day. Cicadas are typically most vocal during the hottest parts of the day, as the warmth enables them to be more active. They are also known to sing at dusk or at night, depending on the species.
The synchronization of noise during mass emergences, which occur every 13 or 17 years, enhances mating success and serves as a defense mechanism against predators. Millions of cicadas emerge and sing at once, overwhelming predators and ensuring enough survive to mate and lay eggs.
While the loud noises of cicadas are primarily mating calls, they also use their noise for territorial communication and survival. The sound can be disturbing to humans, especially those with autism, hyperacusis, or former ear injuries. To reduce discomfort, individuals can wear hearing protection or stay indoors.
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They emerge after 13 or 17 years underground
Cicadas are fascinating insects that spend most of their lives underground. The seven periodical cicada species in eastern North America are known for their remarkably long life cycles of 13 or 17 years. During this time, the nymphs remain underground, feeding on plant root juices and undergoing five instar stages of development.
The periodical cicadas' emergence is triggered by soil temperature. When the soil reaches about 64 degrees Fahrenheit at a depth of 12-18 inches, the nymphs construct tunnels to the surface and prepare to shed their shells. In late April to early June, mature nymphs emerge above ground, shedding their shells and developing wings.
The emergence of periodical cicadas is a synchronized event, with huge populations of insects appearing simultaneously. This mass emergence serves as an adaptation strategy called predator satiation, where the sheer number of cicadas overwhelms predators, ensuring some individuals survive to reproduce. The prime-number life cycles of 13 and 17 years are thought to further enhance predator avoidance by reducing the chances of aligning with shorter reproductive cycles of predators.
After emerging, male cicadas aggregate in chorus centres, producing loud mating calls to attract females. The females arrive a few days later, and the mated pairs locate trees or shrubs to lay their eggs. The adult cicadas' above-ground lifespan is brief, lasting only about four to six weeks. Once their reproductive mission is complete, they die, and their bodies contribute to enriching the soil.
The newly hatched cicada nymphs then return to the ground, marking the beginning of another 13 or 17-year cycle underground. This cyclical pattern is a testament to the remarkable life strategy of periodical cicadas, as they patiently wait underground for over a decade before emerging to fulfil their adult roles in a matter of weeks.
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The noise can be a nuisance
Cicadas are a superfamily of insects, with over 3,000 species described worldwide. The majority of these are annual cicadas, but a few North American species, known as periodical cicadas, emerge en masse every 13 or 17 years. Cicadas are known for their exceptionally loud songs, produced by the rapid buckling and unbuckling of drum-like tymbals. The mating calls of male cicadas can reach up to 100 decibels, which is as loud as a revving motorcycle engine. In some cases, the noise can be loud enough to cause permanent hearing loss in humans at close range.
While cicadas are found in various habitats around the world, certain regions, including New England, experience periodic cicada emergences that can result in a significant increase in noise levels. In 2024, a swarm of trillions of cicadas emerged in the Midwest, and while New England did not experience the same magnitude of swarm, the region is expected to be significantly affected in 2025. The noise created by these insects can be a nuisance to people living or travelling through areas with high cicada populations.
The loud chirping and buzzing of cicadas can be constant and unrelenting, lasting from before dawn until late at night. This can disrupt sleep and create a general nuisance for those who want a moment of peace and quiet. The noise may also make it difficult to hear other sounds, such as conversations or natural sounds like birdsong. For individuals who are sensitive to noise or have auditory sensitivities, the loud and constant nature of cicada songs can be particularly challenging.
Additionally, the noise created by cicadas can impact certain activities that require concentration or quiet environments. This may include activities such as working from home, studying, meditation, or outdoor events. The loud songs of cicadas can make it difficult to focus or conduct activities that require a certain level of acoustic clarity. For example, musicians or audio professionals may find their work disrupted by the constant background noise of cicadas.
While the noise of cicadas can be a nuisance, it is important to recognize that this sound is a natural part of the ecosystem. Cicadas have their own unique songs, and their emergence and mating rituals are a fascinating aspect of the natural world. Additionally, cicadas are harmless insects that play a role in the food chain and contribute to the biodiversity of their habitats. However, for those who find the noise particularly bothersome, there are some strategies that can help mitigate the impact. These may include wearing earplugs or noise-cancelling headphones, staying indoors with the windows closed, or planning outdoor activities during periods when cicada activity is typically lower.
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They are the loudest insect in the world
Cicadas are a superfamily of insects, with over 3,000 species found all over the world. They are characterised by prominent eyes set wide apart, short antennae, and membranous front wings. They are perhaps best known for their extremely loud songs, which can reach volumes of up to 120 dB, making them the loudest of all insect-produced sounds.
The songs of male cicadas are produced by the rapid buckling and unbuckling of drum-like organs called tymbals. The purpose of these songs is to attract mates, with male cicadas producing their songs in groups, resulting in a very loud orchestra of noise. The songs of different cicada species are unique, and they can be identified by their distinct sounds. In addition to mating songs, some species of cicadas also have courtship songs, which are generally quieter, and produced after a female has been drawn to the calling song.
The loudest cicada species is the African cicada, which can produce a noise of up to 107 decibels. This is louder than a power mower at full volume! The loudest insect in the world, however, is the peacock butterfly, which produces a click that measures 110 decibels.
In North America, periodical cicada species emerge en masse every 13 or 17 years, depending on the species. In ideal habitat conditions, as many as 1.5 million cicadas can appear in any given acre. The emergence of these huge populations of insects gives them the best chance of successfully finding a mate and producing young before they die or are eaten by predators.
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Frequently asked questions
Cicadas are extremely loud, with their songs reaching up to 100 decibels, which is as loud as a motorcycle revving its engine. They are considered to be the loudest insect in the world.
Cicadas produce their loud songs through the rapid buckling and unbuckling of drum-like tymbals. The sound is the mating call of male cicadas, which can be heard from varying heights on trees.
Cicadas are found worldwide, in any habitat that has deciduous trees, with the majority being in the tropics. In the US, they are found in several states, including Massachusetts, New York, and Ohio.
Cicadas typically emerge every 13 or 17 years, depending on the species. They spend the majority of their lives underground and emerge to reproduce before dying within a few days.
