Scarabaeidae

Scarab beetles come in many types.

Most are brown or black. Some have bright colors. Many beetles live at night.

Some beetles live in the day. They use their legs to dig in the dirt. Some use small plates on their heads to smell. They fan these plates out like leaves. This helps them find food. Baby beetles are called grubs. They are white or pale yellow. They live under the ground.

Long ago, people in Egypt thought they were sacred.

Scarab beetles belong to a big family. There are over 35,000 kinds of these beetles.

Most scarabs are brown or black. Some have bright, shiny colors. Many of these beetles are nocturnal. This means they are active at night. Other kinds live during the day.

Many scarabs have special parts on their heads. These parts are called lamellae. They are thin plates. The beetle keeps them in a tight ball. When it smells food, it fans them out like leaves. This helps the beetle find scents.

Some beetles have large horns. Males use them to fight. They fight for mates or food. Other beetles have legs made for digging.

Baby scarabs are called grubs. They are pale yellow or white. They live under the ground or under trash.

Some scarabs are scavengers. They eat dung or dead plants. Others eat living plants. In Ancient Egypt, people thought the dung beetle was sacred. They even made charms that looked like them.

Scarab beetles belong to a huge family called Scarabaeidae. This family includes more than 35,000 different species found all over the world.

Most of these beetles have stout bodies. They are often brown or black in color. However, many species that are active during the day have bright metallic colors. Some beetles even have shells that act as circular polarizers. This was the first time scientists found circular polarization in nature. These beetles play a very important role in both tropical and temperate places.

Many scarabs have a special way of smelling things. Their antennae have parts called lamellae, which are thin plates.

Usually, the beetle keeps these plates pressed together in a tight ball. When the beetle follows a scent, it fans the lamellae out like leaves. This helps the beetle sense odors in the air. Some beetles also have legs that are built for digging. Other species, like some males, have large horns on their heads or their pronotum. They use these horns to fight for resources or mates.

Scientists have studied these beetles for a long time. The way we group these beetles has changed quite a bit. Some groups that were once subfamilies are now considered full families. These include groups like Geotrupidae and Hybosoridae. We also know about ancient beetles from fossils. The largest fossil scarabaeid was named Oryctoantiquus borealis. It lived during the Eocene period in Oregon, USA.

There are many different kinds of scarabs to know. Some are called dung beetles, June beetles, or rhinoceros beetles. You might also hear of Hercules beetles or Goliath beetles.

Their young are called grubs. These grubs are pale yellow or white and shaped like the letter C. Most grubs live underground or under debris away from the sun. While many adults are nocturnal, some groups like leaf chafers are active during the day. Some scarabs are scavengers that eat dung or decaying plants. Others, like the Japanese beetle, eat living plants.

Scarab beetles have been important to humans for a very long time. In Ancient Egypt, the dung beetle was seen as a sacred animal.

People there even made amulets that looked like these beetles. These charms were traded all across the Mediterranean world. It is interesting to see how a small insect can be so important to history. Whether they are recycling old plants or being used as art, scarabs are truly special. They connect the natural world to the stories of ancient people.

The family Scarabaeidae contains a massive group of insects known as scarab beetles. There are over 35,000 different species currently defined within this family worldwide.

These beetles play vital roles in both temperate and tropical environments. They act as scavengers that recycle organic matter back into the earth. Some species also function as plant-eaters that impact various types of vegetation. Because they are so diverse, scientists have spent a long time studying their classification. This study helps us understand how these many species relate to one another.

Many scarabs possess unique physical tools to help them survive. Their antennae often appear to have knobs at the ends. However, these antennae are actually lamellate, meaning they consist of several segments that extend into thin plates called lamellae.

A beetle typically keeps these plates compressed into a tight ball. When the insect needs to follow a specific scent, it fans the lamellae out like leaves. This action increases the surface area to better sense odors in the air. Additionally, many species are fossorial, which means their legs are specially adapted for digging into soil.

Scarab beetles exhibit a wide variety of shapes, sizes, and behaviors. Most adults have stout bodies and are colored brown or black. Species that are diurnally active, or active during the day, often show bright metallic colors. Some members of the family even possess shells with structural colors. These shells act as left-handed circular polarizers. This was the first example of circular polarization ever discovered in nature. Some males also grow large horns on their head or their pronotum, which is the plate covering the thorax. They use these horns to fight for resources or mates.

Life begins for a scarab as a larva, which is commonly called a grub.

These grubs are usually pale yellow or white in color. They also have a distinct C-shape. Most grubs live in dark places like underground or under debris. This protects them from being exposed to direct sunlight. While many adult beetles are nocturnal and active at night, some groups are different. For example, the flower chafers, known as Cetoniinae, are active during the day. Many leaf chafers, or Rutelinae, also prefer daylight hours.

Classification of the Scarabaeidae has changed significantly as scientists learn more. Several groups that were once considered subfamilies have been elevated to the rank of full families. These include Bolboceratidae, Geotrupidae, Glaresidae, Glaphyridae, Hybosoridae, Ochodaeidae, and Pleocomidae. Other groups have been moved to lower ranks within the hierarchy. We can also learn about the history of these insects through the fossil record. The largest fossil scarabaeid ever found was Oryctoantiquus borealis. This species lived during the Eocene epoch in Oregon, USA.

There are many famous examples of beetles within this large family. You may recognize the dung beetle, which is known for recycling waste. Other well-known types include June beetles and various rose chafers found in North America, Europe, and Australia. Some of the most impressive insects are the rhinoceros beetles, Hercules beetles, and Goliath beetles.

While many are helpful scavengers, others can be pests. The Japanese beetle is a notable example of a species that eats plants and can damage crops.

Scarabs have also held a deep place in human history and culture. In Ancient Egypt, the dung beetle known as Scarabaeus sacer was considered sacred.

Because they were so highly regarded, people created amulets representing these beetles. These small carvings were not just kept locally. They were traded extensively throughout the entire Mediterranean world. This shows how a biological organism can influence human art and trade systems across vast distances.