Invertebrates
Lily Beetle
Lilioceris lilii · also called scarlet lily beetle
On a garden lily in May, a lily beetle’s scarlet back glows against the green leaves, but at a touch it drops from the plant and vanishes, landing black side up in the soil.
Overview
The lily beetle, Lilioceris lilii, is a Not Evaluated beetle of gardens, meadows, and woodland edges across Europe and Asia, now also found in North America. Its scarlet colour, squeak, and droppings-covered grubs make it one of the most distinctive and most unwelcome beetles in lily beds.
A beetle with a hiding trick
By dropping to the ground and landing on its black underside, the lily beetle turns from a bright red target into a dark speck that is hard to find.
Status
Not Evaluated globally, though widespread and increasing in gardens.
Lily Beetle: common questions
Why does the lily beetle squeak?
It makes a squeaking noise by rubbing part of its abdomen against its wing cases, a warning when it is disturbed.
Why do lily beetle grubs look like droppings?
They cover themselves in a slimy layer of their own black droppings, which hides them and deters predators.
What do lily beetles eat?
Both adults and grubs feed on the leaves and flowers of lilies and fritillaries.
Where is the lily beetle found?
It lives in gardens, meadows, and woodland edges across Europe and Asia, and has spread to North America.