Length 5-7 mm. A very common but extremely variable species, with many different colour forms.   Unlike Aphrophora, the pronotum does not have  keel, and the head has fine hairs.  Unlike Neophilaenus the vertex plate ('nose') does not have a median keel.  The outer margin of the forewing is convex (smoothly curved, without a straight section).

The green larva surround themselves in protective froth called 'cuckoo-spit'.  It prevents dehydration and protects the nymph from predators such as ants.  https://www.nhm.ac.uk/discover/cuckoo-spit-and-fascinating-froghoppers-spittlebugs.html

There are <10 spines on hind tarsi (c.f. >10 for Neophilaenus campestris) [reference needed]. 

Neophilaenus and Aphrophora

Good quality photographs, preferably one from directly above and one from the side. 

Usually on vegetation such as bushes in grassy areas.

Adult: June to September.

An extremely common species on a wide range of plants across the UK. (ref.: British Bugs website)

Very common in Leicestershire and Rutland.