Rove beetle

Rove beetles are a large family of beetles known as Staphylinidae. What makes them special is their short wing covers, called elytra, which leave most of their belly parts showing. There are over 66,000 kinds of rove beetles, making them one of the biggest groups of beetles and one of the largest families of living things.

These beetles first showed up a very long time ago, during a time called the Middle Jurassic, based on fossils that scientists have found. They are found in many different places and have many different shapes and sizes, making them very interesting to study.

One famous kind of rove beetle is called the devil's coach-horse beetle. The group of rove beetles was first given its name in 1802 by a scientist named Pierre André Latreille.

Anatomy

Rove beetles come in many sizes, usually between 2 to 8 mm long, but some can be as small as less than 1 mm or as large as 35 mm. They often have long, slender bodies, and their colors can vary widely from yellow and red to brown, black, or even shiny blue and green. These beetles have antennas with 11 parts and a flexible, long belly that sometimes looks like an earwig.

One special feature of rove beetles is their short wing covers, which force them to fold their wings tightly when not in use. Despite this, they are still good fliers. Some rove beetles, like those in the groups Antimerus and Phanolinus, have a shiny, metallic look.

A few rove beetles, especially in the group Paederinae, produce a strong substance in their blood that can irritate a person’s skin if it comes into contact. This substance is very powerful, even stronger than some animal venoms.

Ecology

Rove beetles live in almost every place where other beetles are found. They eat many things, except the parts of plants that are still alive, though scientists recently found one type that eats plants. Most rove beetles hunt and eat other small insects and creatures, often living in places where leaves and plants have broken down. You can also find them under rocks and near water.

Some rove beetles live near the ocean and can survive when the tide comes in, though these are a small part of all rove beetles. Others live inside ant and termite homes, while a few help mammals by eating fleas and other bugs that bother the animals. Because rove beetles can sense changes in their environment, they can help scientists know when something is wrong with the habitat.

Systematics

Scientists are still working on how to group the 63,650 known rove beetle species. Some think they should be split into 10 families, but most agree on a system with 32 subfamilies, around 167 groups called tribes, and about 3,200 types called genera. Each year, around 400 new species are discovered, and many more wait to be found in tropical areas.