Types Of Insects (All You Need To Know)

Do you know What Are The Types Of Insects? Insects are the most varied category of organisms, meaning that there are more species than any other group; it has long been acknowledged and documented. There are an estimated 900,000 different species of live insects around the globe. This illustration roughly represents 80% of all species.

Only current and previous studies may be used to estimate the number of bug species still alive today. Most experts concur that there are more insect species than insect species that have already been given scientific names. Conservative estimates place this number at 2. However, estimates range up to 30 million. The entomo fauna found in tropical forest canopies worldwide has drawn much interest in the past ten years.

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The number of living insect species is 30 million, according to research by Terry Erwin of the Smithsonian Institution’s Department of Entomology in the canopy of Latin American forests. Additionally, among all terrestrial creatures, insects likely have the highest biomass. At any given time, there are likely 10 quintillion (10,000,000,000,000,000,000) different insects.

Types Of Insects

In general, there are two categories of hexapods insects. Entognatha, which includes springtails, proturans, and diplomats, are ancient wingless insects with mouthparts located inside the head (ento- meaning “inside” and -Agatha alluding to “jaw”).

Ectognatha (“outside jaw”), which includes contemporary or “real” insects, have mouthparts that remain outside the skull and acquire wings at various stages. Ectognathous insects, which can be seen most commonly, come in a variety of orders, but the following stand out:

  • Praying mantises, or Mantodea
  • Stick insects and leaf insects are Phasmatodea.
  • Coleoptera is beetles.
  • Cockroaches are Blattodea.
  • Hymenoptera includes ants, bees, and wasps.
  • Orthoptera includes grasshoppers and crickets.
  • Stoneflies are Plecoptera.
  • Moths and butterflies are Lepidoptera.
  • Diptera includes mosquitoes and flies.

Numerous factors contributed to the enormous diversity of insect species and individuals, such as their lengthy geological history, ability to fly, small size that allows survival in a wide range of habitats, capacity to store sperm for delayed fertilization, and general environmental adaptability.

The incredible fertility and reproductive power of insects have typically resulted in the abundance of individuals found in nature. A termite queen in East Africa has been observed to lay 43,000 eggs each day, or one every two seconds.

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The housefly is a typical example used to illustrate the population potential of insects; it is estimated that 190 quintillion people would result from the progeny of one couple of this bug if they all lived throughout a five-month season.

According to recent statistics, there are more than 200 million insects on Earth for everyone! According to a recent New York Times report, there are 300 pounds of insects for every pound of people on Earth.

Characteristics Of Insects

The head, thorax, and abdomen are the three distinct body segments that define an insect. The joints of the exoskeleton plates and the legs can also display subsegments or variants within these three main segments. Additionally, body shapes differ significantly among insects belonging to the same order. Except for the aptery gotes group, which are primitive insects that do not grow wings, most insects have wings when they are adults.

Insects mature through a process of post-embryonic transformations known as metamorphosis. Insects are categorized as “ametabolous” when juveniles do not differ anatomically from adults. “hemimetabolous” (complete metamorphosis)

When the organisms go through the egg, larva, pupa, and adult phases. Or “holometabolous” (incomplete metamorphosis) when they go through the egg, nymph, and adult phases. A well-known illustration of a holometabolous insect is the butterfly.

The Insect Body

What outward characteristics best describe an insect? It is a topic that is exceedingly challenging to answer. This is due to the abundance of exceptions in the class Insecta. Creating a standard body design for most insects is difficult. However, most insects share a few prevalent traits.

Insect Features

  • The head, thorax, and abdomen are an insect’s three primary body components.
  • Since an exterior shell protects its delicate internal organs (exoskeleton), insects do not have an internal skeleton.
  • Aside from some immature species, like caterpillars, which have prolegs, no insect has more than three pairs of legs. You can think of these as your literal legs.
  • Most insects’ mouths’ upper and lower jaws (maxillae and mandibles) are made to bite. This structure comes in various forms, including tubular sucking mouthparts in many moths and butterflies, stabbing sucking mouthparts in many bugs and other blood-sucking insects, and simply no functioning mouthparts in certain adult insects.
  • The head of insects houses one set of antennae.
  • One or two sets of wings are typical for insects but others, like lice, fleas, bristletails, and silverfish, have no wings.

When combined, these characteristics can aid in separating insects from other arthropods.

Insect Evolution

An ancient class of creatures is insects. By the Carboniferous period (360–285 million years ago), the earliest insects had likely already appeared before the Devonian period (400–360 million years ago).

The development of flying proved an efficient approach, as insects attained their widest variety during the Permian epoch (285–245 million years ago). No other group of arthropods has developed flight. The fundamental physical makeup of many of the contemporary orders of insects had evolved by the Permian.

The Jurassic period contains fossils of the more recently evolved Hymenoptera (ants, bees, wasps, and sawflies) and Lepidoptera (butterflies and moths) (210 – 145 million years ago). The Mantodea (prayer mantids) first emerged in fossilized amber during the Eocene period (60 – 35 million years ago).

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To Conclude

There are roughly 91,000 species described in the United States. However, the number of undescribed insect species in the US is over 73,000. Coleoptera (beetles), Diptera (flies), Hymenoptera (ants, bees, and wasps), Lepidoptera (moths and butterflies), and Coleoptera (beetles) have the highest numbers of identified species in the United States, respectively (23,700, 19,600, 17,500, and 11,500).

The quantity of distinct insects in a specific location has been the subject of several insightful studies. There were around 124 million animals per acre in North Carolina. Of these, 90 million were mites, 28 million were springtails, and 4.5 million were various insects, according to soil samples taken to a depth of 5 inches.

According to a comparable study conducted in Pennsylvania, there were 425 million animals per acre, including 11 million different arthropods, 209 million mites, and 119 million springtails. Even particular bug species have been discovered to be exceedingly abundant; estimates for wireworms range from 3 to 25 million per acre (larvae of click beetles).

There are a lot of Types of insects in their kingdom. It was estimated that a Jamaican ant nest included 630,000 individuals. Three million termites were discovered in a nest in South America. There are estimates that locust swarms can contain one billion individuals.

Frequently Asked Questions

What are insects? Give two examples.

An insect is a tiny six-legged animal. Insects typically have wings. Insects include ants, flies, butterflies, and beetles.

What are the three classes of insects?

They make up the majority of the arthropod phylum. Insects have a three-part body (head, thorax, and abdomen), three pairs of jointed legs, complex eyes, and one pair of antennae, in addition to a chitinous exoskeleton.

What are the seven primary characteristics of insects?

Insects are classified as arthropods, which means they have joined appendages. They also have a segmented body, a ventral nervous system, a digestive system, an open circulatory system, and sophisticated sense receptors.

What are the seven orders of insects?

·         Collembola.
·         Coleoptera.
·         Dermaptera.
·         Diptera.
·         Ephemeroptera.
·         Hemiptera.
·         Homoptera.
·         Hymenoptera.

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