One of the 24 beetles on WAnimals

Insects · Coleoptera · Staphylinidae

Devil's Coach-horse

Ocypus olens

Not Evaluated

It has not yet been assessed against the IUCN criteria. See full glossary

The devil's coach-horse is a beetle belonging to the family Staphylinidae. It was originally included in the genus Staphylinus in 1764; some authors and biologists still use that classification.

Size

2 cm – 3.2 cm

Diet

Carnivore

Feeds mainly on other animals.

Activity

Nocturnal

Active mainly at night.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Sighting difficulty

Unknown

Fun facts

  • When threatened it curls its abdomen upwards like a scorpion, opens its jaws and releases a foul-smelling secretion from two anal glands.
  • Its tiny elytra conceal wings folded in an extraordinarily complex way, which it unfurls to fly and then packs away again beneath them.
  • It is an ally in vegetable plots and gardens for its appetite for slugs and pest larvae, though its bite can be painful if it is handled.
  • When threatened it strikes an unmistakable pose: it raises its abdomen over its head like a scorpion and opens its jaws wide. Hence its English name of devil's coach-horse and its reputation as a bearer of curses in British folklore.
  • The display is only half a bluff: it has no sting, but it bites hard and gives off a repulsive smell from glands at the tip of its abdomen, which is what its name, olens, means.
  • Its elytra are extremely short and leave almost the whole abdomen exposed, a hallmark of the rove beetles. Beneath those elytra it carries large wings folded in a highly complex way, which it unfurls to fly.
  • It is a voracious predator of slugs, worms and insects, and in vegetable plots and gardens it is highly beneficial.
  • Its larva is just as predatory and lives in the soil.

Life cycle & biology

Skeleton type
Invertebrate - chitin exoskeleton (insect)
Habitat & environment
Gardens, crops, roadsides and leaf litter of Europe

Sources consulted: https://es.wikipedia.org/wiki/Ocypus_olens

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