Are cockroaches insects? Why? What counts as an insect?

Insects come in many different forms and are the most numerous animal group on Earth. They are found in almost every corner of the world. There are more than 1 million known insect species, but there are still many species to be discovered. Are cockroaches insects? Why? Let's find out.

Contents of this article

1. Is cockroach an insect? Why?

2. What is considered an insect

3. How many legs do insects have?

Are cockroaches insects? Why?

Yes. The body structure of cockroaches is divided into three parts: head, thorax and abdomen, with two pairs of wings and six legs. Secondly, they have super strong reproductive capacity and vitality. There are about 6,000 species of cockroaches in the world. In addition, cockroaches are arthropods among invertebrates. The entire life cycle includes three stages: egg, larva and adult. It can be seen that cockroaches have the characteristics of insects, so they belong to insects.

Different types of cockroaches also have certain differences in appearance and living habits.

Cockroaches like to live in warm, humid, crevices and food-rich environments.

Cockroaches are omnivorous insects and particularly like to eat fragrant, sweet and oily flour-based foods, such as bread, rice and pastries.

What is an insect?

The basic characteristics of insects can be summarized as: "The body is usually divided into three sections: head, thorax, and abdomen, with two pairs of wings and six legs. A pair of antennae grows on the head, the skeleton is wrapped around the outside of the body, and the shape changes throughout life." That is to say, the insect body is usually divided into three sections, the thorax has four wings and six legs, and it has an exoskeleton, and insects usually have changes in shape.

Insects undergo a series of internal and external changes in their growth and development before they can transform into adults. This change in body shape is called metamorphosis.

The adult thorax of most insects has two pairs of wings, such as locusts, butterflies, bees, etc. Some species of insects have evolved to have only one pair of wings, such as mosquitoes and flies.

Spiders that spin webs and scorpions that sting people have only two parts: the head and thorax and the abdomen, and they have eight legs. These are not insects. Centipedes and millipedes have more legs, so they are certainly not insects.

How many legs do insects have?

Insects usually have six legs in their adult stage. One of the biological definitions of insects is that they have six legs. Insects belong to the phylum Arthropoda, subphylum Hexapoda, class Insecta. Strictly speaking, common insects in life, such as spiders and centipedes, are not considered insects.

Insects come in many different forms and are the most numerous animal group on Earth. They are widely distributed in almost every corner of the world. There are more than 1 million known species of insects, but there are still many species to be discovered. In daily life, the most common insects are locusts, butterflies, bees, dragonflies, flies, cockroaches, etc.

The most typical feature of insects is that their bodies are composed of a series of segments, which are mainly divided into three parts: head, thorax and abdomen. In the adult stage, they generally have two pairs of wings and six legs. The wings and legs are located on the thorax, and there is a pair of antennae on the head. From the larval stage to the adult stage, the growth form varies and the growth method is also different.