Libellulidae

These are many kinds of dragonflies.

They live almost everywhere in the world. Some have bright colors. Others have stripes on their wings. Some can stay very level while they fly. This is how they got their name. Baby dragonflies are also special. They have a mask on their face. This mask helps them. There are over 1000 types of these insects. You might see them near you soon!

Libellulidae is the largest family of dragonflies. There are over 1000 species in this group. You can find them almost everywhere in the world. Some are called darters or meadowhawks. These live in most places except Australia.

Many of these insects are very pretty. Some have bright colors. Others have stripes on their wings. The name Libellulidae comes from a Latin word. It means "a carpenter's level." This is because they can stay level while hovering.

Baby dragonflies are also unique. They have stout bodies. Their lower lip is a mask. This mask covers the lower part of their face.

We can find fossils of these insects too. One fossil is called Palaeolibellula. It was found in Kazakhstan. This shows they have been around for a long time. Other fossils come from France and Italy. These tell us about their history. Some types, like Libellula angelina, are now endangered. We must help protect them.

Libellulidae is the largest family of dragonflies in the world. You might know them as chasers, darters, skimmers, or perchers. This huge group has over 1,000 different species. They live almost everywhere on Earth. You can find them in many different lands. Some live in the tropical parts of the world. Others live in the southern United States. These dragonflies are very common to see.

These insects have a very special way of moving. Their name comes from a Latin word called libella. This word means a carpenter's level. A carpenter's level is a tool used to stay flat. These dragonflies can stay level while they are hovering. Many species have very bright colors. Some even have stripes on their wings. The genus Libellula has many of these colorful types.

We can learn about their past through fossils. The oldest record is a fossil called Palaeolibellula. It was found in Kazakhstan. Scientists believe it is a stem-member of this family. This means it is an early relative. Many other fossils have been found in Europe. These fossils come from places like France and Italy. They show how these insects lived long ago.

There are many different groups within this family. The genus Sympetrum includes the darters. They live almost everywhere except for Australia. In North America, people call them meadowhawks. The genus Plathemis includes the whitetails. Some species in the genus Celithemis live in the southern United States. The genus Libellula has a special insect called Libellula angelina. This dragonfly is one of the few endangered ones in Japan.

Even the baby dragonflies are interesting to study. They are called larvae. These larvae have stout or thick bodies. They have a special part called a labium. This is their lower lip. The labium works like a mask. It covers the lower part of their face. This helps them as they grow. You can see these parts in fossil records too.

Libellulidae is the largest family of dragonflies on Earth. These insects are often called chasers, darters, skimmers, or perchers. They are incredibly common because they have a nearly worldwide distribution. Even if you exclude certain subfamilies, the group contains over 1,000 different species. This vast diversity makes them one of the most successful insect families. They play important roles in many different ecosystems around the globe.

The name Libellulidae comes from the Latin word "libella." This word means a carpenter's level. A carpenter's level is a tool used to ensure a surface is flat and even. This name was chosen because of the insect's unique ability to stay level while hovering. This hovering skill is a key characteristic of many members in this family. It allows them to navigate their environments with great precision.

To understand their life cycle, we must look at their larval stage. The larvae, or young dragonflies, have very stout and thick bodies. They possess a specialized anatomical feature called a labium. The labium is a structure that functions as the insect's lower lip. In Libellulidae, this labium is developed into a mask. This mask covers the lower part of the larva's face. This specialized anatomy is a defining trait of the family.

Scientists categorize these dragonflies into many different genera. The genus Sympetrum includes insects known as darters or meadowhawks in North America. These darters are found throughout most of the world, except for Australia. The genus Libellula is mostly found in the New World. Some members of this genus have brightly colored bodies or banded wings. One specific species, Libellula angelina, is an endangered odonate found in Japan.

Other groups show even more variety in color and appearance. The genus Plathemis includes a group known as the whitetails. In the southern United States, the genus Celithemis contains several brightly marked species. Some tropical species in the genera Trithemis and Zenithoptera are considered especially beautiful. Other common genera that belong to this large family include Tramea and Pantala. Each genus represents a different branch of this massive insect family.

We can learn about the history of Libellulidae through the fossil record. The earliest known record is the fossil genus †Palaeolibellula. This fossil was found in the Turonian period of Kazakhstan. Scientists believe it represents a stem-member of the family. This means it is an ancestral relative from a very early time. Many other fossil genera have been discovered in Europe. These include †Caussanelia and †Jeanlegrandia, which date back to the Late Oligocene of France.

Fossil evidence spans many different geological time periods and locations. For example, fossils like †Lithemis and †Oligocaemia were found in the mid-late Miocene of Croatia. In Italy, researchers found the fossil genus †Oryctodiplax from the Late Miocene. Other fossils have been identified in Germany, such as †Parabrachydiplax from the Middle Miocene. There are even older records like †Molertrum from the earliest Eocene of Denmark. These fossils help scientists map the long evolutionary journey of the Libellulidae family.