Species classes: Insects

The Great diving beetle is a large and voracious predator of ponds and slow-moving waterways. Blackish-green in colour, it can be spotted coming to the surface to replenish the air supply it stores beneath its wing cases.

When threatened, the Green tortoise beetle acts just like a tortoise, pulling its feet and antennae in and hunkering down, gripping the leaf it is on as tightly as possible. Look for it on White Dead-nettle in gardens and hedgerows.

The common name of the Bloody-nosed beetle derives from its unusual defence mechanism: when threatened, it secretes a distasteful blood-red liquid from its mouth. This flightless beetle can be found on grassland and heathland, and along hedgerows.

A clever mimic, the wasp beetle is black-and-yellow and moves in a jerky, flight-like fashion - fooling predators into thinking it is actually a more harmful common wasp. Look for it in hedgerows and woods in summer.

The metallic-green Musk beetle lives up to its name: it releases a musky-smelling secretion when it defends itself. It is a longhorn beetle, so has lengthy antennae. Look for it near wetlands in summer.

Famed for its tapping in the middle of the night, supposedly heralding tragedy, the Deathwatch beetle is a serious wood-boring pest. In houses, their tunnelling can cause major damage.

The 22-spot ladybird is one of three yellow ladybirds in the UK. Look for it in grassland, woodland and gardens. Ladybirds are beneficial insects, managing garden pests - encourage them by putting up a bug box.

The 14-spot ladybird is one of three yellow ladybirds in the UK. Look for it in grassland, woodland and gardens. Ladybirds are beneficial insects, managing garden pests - encourage them by putting up a bug box.

A non-native species originating from Asia, the harlequin ladybird is prevalent in towns and gardens.

The orange ladybird is pale orange with up to 16 cream spots on its wing cases. It feeds on mildew on trees like sycamore and ash, and hibernates in the leaf litter. It often turns up in moth traps.