Cleridae

Checkered beetles are bright bugs.

They can be red, yellow, or blue. Most have hairy bodies. They also have long shapes.

Many of these bugs hunt other bugs. This helps keep trees safe. They eat tiny bugs that live in bark. Some even eat pollen from flowers.

They live in many lands. You can find them in many places. These bugs are very busy hunters!

Checkered beetles are a big family of beetles.

They live all over the world. Most of these beetles are hunters. They eat other beetles and their young. This helps protect trees from pests. Some beetles even eat pollen from flowers.

These beetles have many special parts. Their bodies are long and often very bright. They can be red, yellow, orange, or blue. Most have tiny hairs on them. Their legs have a special pattern. They have five small parts on each foot. This is called a 5–5–5 tarsal formula.

Life for a checkered beetle has many steps. First, a female lays eggs under tree bark.

Next, the eggs hatch into larvae. These larvae eat a lot to grow. Then, they form a pupa. A pupa is a stage where the bug changes. Finally, a new adult beetle comes out. Warm weather makes this whole way happen faster. Cold weather makes it much slower.

Checkered beetles belong to a large family of insects called Cleridae.

These beetles live all over the world. You can find them in the Americas, Africa, Europe, the Middle East, and Australia. There are about 3,500 different species in the world. Many of these beetles are hunters that eat other insects.

Some species act as scavengers by eating dead animal matter. Others are flower visitors that eat pollen. Because they live in so many places, they have many different ways of living.

Most checkered beetles have long, oval bodies covered in bristly hairs.

They often show off bright colors like red, yellow, orange, or blue. You can identify them by looking closely at their legs. They have a 5–5–5 tarsal formula. This means each of their three leg types has five small foot segments.

Their hard front wings, called elytra, often have tiny pits. Most species also have antennae that are clubbed at the very tip.

The life of a beetle happens in four main steps. First, a female lays between 28 and 42 eggs.

She often hides them under tree bark or under stones. Next, the eggs hatch into larvae. These larvae are hungry hunters that eat a lot to grow. After they finish eating, they form a pupa to change. Finally, an adult beetle emerges from the pupa. Warm weather makes this whole way of life happen faster.

Different species choose different homes. Some live in forests and hunt bark beetles under the bark of trees.

Other species are nest robbers that live in shrubs or trees. These hunters look for the young of bees, wasps, or termites. One type of beetle, called Necrobia rufipes, is very different. It is known as the red-legged ham beetle. It likes to eat dried meats and even found on Egyptian mummies. This beetle is helpful to scientists who study how long an animal has been dead.

Checkered beetles are very important to people and nature. Many species are used for biological control. This is a way to manage pests without using chemicals. For example, some beetles eat bark beetles that hurt the lumber industry. Scientists use scents called pheromones to lead the checkered beetles to the pests. This helps the beetles overwhelm and eat the insects that damage trees. By protecting the forests, these small beetles do a very big job.

Cleridae is a large family of beetles commonly known as checkered beetles.

These insects belong to the superfamily Cleroidea and the suborder Polyphaga. They are found across the entire globe, including the Americas, Africa, Europe, the Middle East, and Australia. With approximately 3,500 known species worldwide, they occupy many different ecological niches. While many are famous for being predators, some species act as scavengers or pollen feeders. Their presence is significant in both natural ecosystems and human industries.

Physically, most checkered beetles have elongated, oval bodies covered in bristly hairs.

Many species display vibrant, ornate patterns in colors like red, yellow, orange, or blue. Their antennae are often clubbed at the tips, though some varieties appear saw-toothed or thread-like. A key anatomical feature is the pronotum, which is the shield-like region behind the head. In many species, the pronotum is nearly cylindrical and narrower than the elytra, which are the hardened front wings. The elytra often contain tiny pits or depressions and never expose more than two tergites, or dorsal plates.

To identify a member of the Cleridae family, scientists look at specific anatomical structures.

One primary indicator is the 5–5–5 tarsal formula. This means that on the front, middle, and hind legs, there are five tarsomeres, or individual foot segments. Additionally, the front coxae, which are the bases of the legs, expose the trochanter, the second segment of the leg. Clerids can also be distinguished from the similar Melyridae family because they lack eversible vesicles. These vesicles are small, balloon-like scent glands found on the abdomen or pronotum of other beetles.

The life cycle of a clerid beetle is holometabolous, meaning it follows four distinct stages: egg, larva, pupa, and adult.

The process begins when a female lays between 28 and 42 eggs. She typically deposits them under tree bark or beneath stones in the soil. After hatching, the larvae emerge as slender, hairy hunters. These larvae are incredibly voracious; some can consume several times their own body weight in a single day. After a period of intense feeding, the larvae enter the pupal stage. Most species create earthen cells made of soil and secreted enzymes to pupate, a stage that can last from six weeks to a full year.

Different species of Cleridae have adapted to very different lifestyles and habitats.

"Flower visitors" live in moist, sunny areas and feed on pollen or insects that visit flowers. "Tree-living species" reside in forests, where they hunt for bark beetles and wood-boring insects under the bark. Another group is known as "nest robbers." These beetles live in trees or shrubbery and hunt the larvae of bees, wasps, or termites. Some species even target grasshopper egg masses. Others, like the genus Necrobia, are scavengers that seek out decaying animal matter.

Certain checkered beetles have a direct impact on human activity and science.

The red-legged ham beetle, *Necrobia rufipes*, is a well-known species in stored product entomology. It can infest dried or smoked meats, hides, and even items like dried figs or silk. In the field of medico-legal entomology, some species are used to help estimate the post-mortem interval, or the time since an animal died. Because *Necrobia rufipes* is attracted to carrion during the later, drier stages of decomposition, its presence provides important clues to forensic investigators.

Because of their intense appetite, many clerids are used in biological control programs.

This is a method of managing pest populations using natural predators. For example, species like *Thanasimus undatulus* are used to protect the lumber industry. These beetles prey on bark beetles, such as the mountain pine beetle, which can kill large numbers of trees. Researchers can even use pheromones—chemical scents used for communication—to attract checkered beetles to specific trees. This allows the clerids to overwhelm and eliminate the pest populations, helping to maintain healthy forest ecosystems.