Stephen Dalton / Cuckoo spit with Froghopper nymph ( Cercopoidea) visible. UK

James Dunbar / Froghopper nymph (Philaenus spumarius) in foam, 'Bristol, Captive.

MYN / Tim Hunt / Recently emerged Frog hopper (Philaenus spumarius) nymph, Barnt Green, Worcestershire, England, UK, June.

Alex Hyde / Cuckoo-spit, a protective foam secreted by the nymph of the Common froghopper (Philaenus spumarius). Devon, UK. June.

Alex Hyde / Common Froghopper (Philaenus spumarius), Peak District National Park, Derbyshire, UK. June.

MYN / Tim Hunt / Recently emerged frog hopper (probably Philaenus spumarius) nymph, Barnt Green, Worcestershire, UK, June. Meetyourneighbours.net project

Andy Sands / Alder Spittlebug (Aphrophora alni) on Oak leaf, UK, captive, July

Andy Sands / Alder Spittlebug (Aphrophora alni) on Oak leaf, UK, captive, July

Nigel Cattlin / Cuckoo spit from Green / Meadow froghopper, (Philaneus spumarius) on lavender stems, Berkshire, June

Guy Edwardes / Alder spittlebug (Aphrophora alni) resting on nettle stem, Rhodope Mountains, Bulgaria. June.

Guy Edwardes / Alder spittlebug (Aphrophora alni) resting on nettle stem, Rhodope Mountains, Bulgaria. June.

Alex Hyde / Froghopper (Philaenus sp.) larva in cuckoospit, Nottinghamshire, UK. May.

Emanuele Biggi / Meadow spittlebug (Philaenus spumarius) nymph hiding in the bubbles it makes to stay safe and humid on a grass stem, Genova, Italy, May.

Nigel Cattlin / Cuckoo spit on a Stinging nettle leaf with a green Froghopper nymph (Philaenus spumarius) on stinging nettle leaf, Devon, June

Nigel Cattlin / Cuckoo spit on on a Rosemary bush caused by a Froghopper nymph (Philaenus spumarius), Devon, June

Nigel Cattlin / Cuckoo spit, frothy bubbles, exuded by common froghopper (Philaenus spumarius) nymph on rosemary plant, Berkshire, England, UK, June.

Nigel Cattlin / Cuckoo spit, frothy bubbles, exuded by common froghopper (Philaenus spumarius) nymph on rosemary plant, Berkshire, England, UK, June.

Nigel Cattlin / Cuckoo spit, frothy bubbles, exuded by common froghopper (Philaenus spumarius) nymph on rosemary plant, Berkshire, England, UK, June.

Nigel Cattlin / Cuckoo spit, frothy bubbles, exuded by common froghopper (Philaenus spumarius) nymph on rosemary plant, Berkshire, England, UK, June.