|Froghoppers are a type of
insect. Their young stages (nymphs) live inside a mass of froth. This froth can often be
seen on a great variety of plants in early summer.
It is commonly known as 'Cuckoo spit', although it actually has nothing to do with cuckoos.
The foam is produced by the nymph, which blows air through a fluid exuded from the anus.
Viewed under a microscope (left), the nymph could be seen blowing bubbles from its rear-end!
The froth protects the nymphs from drying out and may also help to deter predators.
|The insects are
known as froghoppers because the adults can have a somewhat frog-like appearance, as well
as a great ability to jump.
They are a kind of bug, feeding on plant sap. They belong to the family Cercopidae.