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

Simon Colmer / Common froghopper (Philaenus spumarius) nymph secreting protective liquid known as cuckoo-spit. England, UK

PREMAPHOTOS / Common froghopper adult {Philaenus spumarius} newly emerged from nymphal skin and about to leave froth, 'cuckoo spit', covering UK

Simon Colmer / Cuckoo spit, produced by Common froghopper nymph (Philaenus spumarius) for protection, UK.

Philippe Clement / Froghopper {Philaenus spumarius} next to white froth 'cuckoo spit' La Brenne, France.

Kim Taylor / Froghopper (Philaenus spumarius) froth nest (cuckoo spit) made by nymph on grass, UK

Kim Taylor / Froghopper emerging from 'cuckoo spit' on buttercup stem. England. {Philaenus sp}

Mark Moffett / Meadow Froghopper (Philaenus spumarius) young queen entering hole she's chiseled inside Cecropia tree, carrying food grown by the tree, Peru