A large family of beetles with characteristically short wing covers that expose most of the abdomen — the most species-rich beetle family, playing crucial roles as predators, scavengers, and even ant-colony infiltrators.
The largest beetle family
Staphylinidae is the largest family of beetles by species count — over 68,000 described species. They make up roughly a quarter of all known beetle species. Despite this astonishing diversity, rove beetles are among the least-known insects to the general public.
The defining feature is the short elytra (wing covers) — abbreviated to cover only the first few abdominal segments, leaving most of the flexible abdomen exposed. Despite this, they’re fully winged; the large hind wings fold intricately beneath the short covers.
The devil’s coach-horse
The most familiar UK species, Staphylinus olens (the devil’s coach-horse), is a large, all-black rove beetle known for its alarming defensive posture — it raises its tail like a scorpion, opens its large jaws, and releases a pungent secretion from abdominal glands. It can’t sting but the jaw bite is noticeable. It’s a voracious predator of slugs, earthworms, and other invertebrates.
Ant colony infiltrators
Some rove beetles have evolved complex relationships with ant colonies, living inside them and obtaining food from their hosts. These myrmecophile species produce chemicals that mimic ant colony scents, allowing them to move freely through the colony. Some are fed directly by worker ants through trophallaxis (food exchange). This represents one of the most sophisticated known cases of chemical mimicry.
Forensic use
Rove beetles are important in forensic entomology — they arrive at carcasses in predictable succession, following blowflies, and their presence and developmental stage provide independent data for post-mortem interval estimation.
Find more insects by letter
Rove Beetle starts with R and ends with E. Browse other insects along the same letter.
Insects that contain a letter from "Rove Beetle":