Philaenus spumarius is sometimes known as a Froghopper, Spittlebug, Meadow Spittlebug or Cuckoo Spit.
It has a widespread distribution, and you can find them in forests, fields, parks, meadows and gardens.
The young insects (nymphs) consume plant sap, and they'll secrete a foamy liquid while feeding to conceal themselves (cuckoo spit).
Adult hoppers lay eggs in plant stems late in summer, which overwinters and hatches the following spring.
Important monitoring attempts surrounding this species are underway in order to pre-emptively combat the spread of dangerous plant disease. It is caused by the bacterium Xylella fastidiosa, which spittlebugs can transmit from plant to plant whilst feeding. It's not yet been found in the UK, however people across the country are being asked to report sightings of spittlebugs to help map the distribution of this species.