Entoma
Common froghopper, Cercopis vulnerata, plate

Froghoppers

Cercopis vulnerata

Common froghopper

Unlike most froghoppers, whose foamy young cling to stems in plain sight, this species spends its early life hidden underground on plant roots before ever showing its red and black colours.

WhereGrassland, hedgerows, woodland edges, parks
Size8 to 10 mm long
WhenApril to August

It has a glossy black body broken up by bold red patches: a triangular mark near the base of each wing case, a squarish patch in the middle, and a curved band near the tip, over a compact, shield-shaped body.

Nymphs develop underground on plant roots inside a protective foam nest that stops them drying out, overwintering there and only surfacing as winged red and black adults the following spring.

Traits

Habitat

Grassland

Colour

Red, Black

Active

Day

To people

Harmless; feeds only on plant sap and does not bite or sting

Activity through the year

Often confused with

Blood-red froghoppernot in guide
Cercopis sanguinolenta

The blood-red froghopper has black legs just like the common froghopper, but its red markings are smaller and its rear red band is only slightly curved rather than forming the common froghopper's U shape.

Questions

Is the Common froghopper dangerous to people?

Harmless; feeds only on plant sap and does not bite or sting.

When can you see the Common froghopper?

The Common froghopper can be seen from April to August, by day.

Plate retouched from a photo by Patrick Hacker, CC BY 4.0, iNaturalist Licence

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True bugs›Froghoppers›Cercopis

Last updated 2026-09-26. Every entry is checked against published sources.