Cicadas are winged insects that produce a large boon song that can be heard throughout the summer and inhabit all continents except Antarctica. Cicadas appear every year from late June to August. Periodical cicadas, found only in parts of North America, appear from late April to early May with a cycle of 13 or 17 years, depending on the species.
What does a cicada look like?
There are about 3,400 species of cicadas, seven of which are periodic cicadas (three 17-year cicadas and four 13-year cicadas). According to Scientific American.. All cicadas have large bulging eyes. These are usually black or green in the annual cicadas and usually bright red in the periodical cicadas (although in rare cases, the eyes of the periodical cicadas can be white, blue, yellow, or multicolored. According to Semimania).
The annual cicada body can be plain or patterned in shades of black, brown and green, averaging about 1.75 inches (44 mm) long. According to North Carolina State University With a lorry. The body of the periodic cicada is black, a little smaller than the first grade cicada, and is about 0.75-1.25 inches (19-32 mm) long. The wings of the cicada are striped and transparent, and in some species the dark veins near the tips of the wings are “W” shaped. They can’t chew because they have no puncture wounds and no mouth to chew. Adult females have sharp ovipositors, stylus-like organs for spawning, and males have a ribbed eardrum (an exoskeleton structure with alternating hard, flexible membranes) in the first abdominal segment. I am. When the male expands and contracts the timbau rapidly, the vibration creates a semi-specific summer song.
Classification of cicadas
Kingdom: Animal kingdom
As larvae, or larvae, cicadas are white and similar Ants Or termites. They grow underground by molting through several larval stages called instars. During the last instar, the larvae emerge from their burrows. This above-ground nymph stage lacks wings with a light brown exoskeleton and large forelimbs and is used to anchor to trees, plants, or tall grass in preparation for final molting.
When the adult escapes from the larva’s exoskeleton, the body becomes soft and white, but in the next few hours the wings spread and the adult’s exoskeleton hardens and darkens. During this transition, the body is still soft, but it is known as an adult. According to the University of Connecticut (UConn) At Stanford. It takes about 4-6 days for the exoskeleton to completely harden.
How do cicadas breed?
The loud humming sound of the cicada is a call for mating. Male cicadas vibrate the timbau and sing together in a chorus, which attracts both males and females to gather and mate together. After mating, the male dies and the female begins to lay about 20 eggs at a time, which is inserted into the slit of the tree branch in the ovipositor.
Eggs hatch within 6-10 weeks, nymphs fall from the branches to the ground, dig holes in the soil and suck nutrients from the roots of the plant.
What is the habit of cicadas?
Cicadas spend most of their lives underground as larvae, then on the ground, in trees near where they usually appear, during a short adult stage (lasting about 2-6 weeks). According to the University of Michigan Zoological Museum..
In the case of the annual cicada, the underground stage lasts 2-5 years. According to Texas A & M University At College Station. However, in the case of periodic cicadas, it takes 13 or 17 years for the nymph to see the sunlight again. Regular cicada larvae usually appear when the soil temperature reaches about 64 degrees Fahrenheit (18 degrees Celsius) at a depth of 12 to 18 inches (31 to 46 centimeters).
With the appearance of periodic cicadas, all nymphs in a particular location can appear at about the same time, taking weeks or even 1.5 million insects per acre. A group of periodic cicadas that appear in the same cycle is called a chick. The chicks are categorized by Roman numerals representing each group, and once there were 30 recognized chicks in the northeastern United States. However, over time, scientists have integrated some chicks, and others have disappeared due to habitat fragmentation and human development. Today, there are 12 active chicks of 17-year-old cicadas and 3 13-year-old chicks, UConn Report..
Brood XAlso known as Great Eastern Broad, it is the most widely distributed regular cicada herd that emerges from Illinois to New York, north of Michigan, and south of Georgia. Their last appearance is in 2021 and will not be seen again until 2038, says Cicada Mania.
What do cicadas eat?
Cicadas are true insects (Hemiptera). In other words, it sucks in the mouth, which is shaped like a sharp straw, and is used to puncture plants and suck up the liquid inside. According to the Missouri Conservation Department.. According to UConn, nymphs consume root water and adults drink branch water.
Cicadas, sometimes mistakenly called locusts, are not part of the grasshopper’s order and do not eat agricultural plants like grasshoppers. According to The Ohio State University School of Food, Agriculture and Environmental Sciences (OSU). However, female cicadas can damage young or newly planted tree branches when spawning in sharp ovipositors, which can impair their ability to bear nuts, OSU said. increase.
Are cicadas endangered?
According to the International Union for Conservation of Nature (IUCN), there are no endangered cicada species, but there are some that are at risk.Periodical cicadas are listed on the organization’s Red List of Vulnerable Species Periodical cicada, Magicicada septendecim When Magicicada septendecula According to IUCN, the habitats of these populations are severely fragmented and the number of mature individuals has declined over decades, making them low-risk and near-threat.
Other cicada facts
A male cicada chorus can reach a volume of 80-100 decibels. Nature..
Cicada feathers are waterproof and antibacterial, According to Scientific American..
When cicada larvae leave their burrows, they may create chimneys or mud turrets above the exit. According to Semimania..
Cicada seeds have a variety of songs and you can hear some of them on the website Insect Song: A Guide to the Voices of Crickets, Grasshoppers and Cicadas..
This article was originally written by Live Science contributor Alina Bradford and has since been updated.
Cicadas: Facts about insects in the noisy season
Source link Cicadas: Facts about insects in the noisy season
The post Cicadas: Facts about insects in the noisy season appeared first on Eminetra.