Entoma
Two-lined spittlebug, Prosapia bicincta, plate

Froghoppers

Prosapia bicincta

Two-lined spittlebug

Nymphs wrap themselves in a mass of self-made foam bubbles, hiding in plain sight while they feed on grass stems underneath.

WhereLawns, turfgrass and pastures
Size8 to 11 mm body length
WhenApril to October

The Two-lined spittlebug is a small, wedge-shaped insect about 8 to 11 mm long, black overall with two parallel orange to red lines across the closed forewings and a bright reddish abdomen hidden beneath them.

Wingless nymphs live inside a mass of white foam they produce themselves while feeding on grass and other low plants, and heavy infestations turn patches of turfgrass yellow, then brown or purplish. Adults are most active in warm weather and are common on centipede grass lawns.

Traits

Habitat

Towns

Colour

Black, Orange, Red

Active

Day

To people

A turfgrass pest; not a risk to people.

Activity through the year

Often confused with

Meadow spittlebugOpen entry ›
Philaenus spumarius

Is smaller at about 5 to 7 mm and mottled brown, black and white, without the Two-lined spittlebug's solid black wings and orange stripes.

Questions

Is the Two-lined spittlebug dangerous to people?

A turfgrass pest; not a risk to people.

When can you see the Two-lined spittlebug?

The Two-lined spittlebug can be seen from April to October, by day.

Plate retouched from a photo by Sam Kieschnick, CC BY 4.0, iNaturalist Licence

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True bugs›Froghoppers›Prosapia

Last updated 2026-09-27. Every entry is checked against published sources.