Bug FAQLatticed Heath
Chiasmia clathrata · Order: Lepidoptera · Family: Geometridae
The Latticed Heath moth has a wingspan of about 20 to 25 mm and its wings are yellowish-white with a brown net-like pattern. In Britain it flies from May to September, producing one or two generations each year and overwinters as a pupa.
Source: Wikipedia
How to recognize it
The adult’s wings are a pale yellow-white background crossed by a lattice of brown lines. The final-instar caterpillar is pale green with a strong white line along each side and thin white dorsal lines.
Source: Wikipedia
Size
Adults have a wingspan of roughly 20 to 25 mm.
Source: Wikipedia
Where it lives
They live in open places such as grasslands, moorlands and waste ground.
Source: Wikipedia
What it eats
Caterpillars feed on bedstraws and a variety of legumes including clovers, trefoils, lucerne and meadow vetchling.
Source: Wikipedia
Life cycle
The species spends the winter in the pupal stage.
Source: Wikipedia
When you see it
Adults can be seen any time between May and September in the British Isles.
Source: Wikipedia
Where it comes from
The species occurs across Europe, the Near East, North Africa and extends east through Russia, Siberia, the Amur region, Iran, Kazakhstan, China, Korea and Japan.
Source: Wikipedia
More photos
Questions people ask
When can I expect to see Latticed Heath moths?
Adults are active from May to September, with one or two generations per year in the British Isles.
Source: Wikipedia
What do the caterpillars look like?
The final-instar larvae are pale green with a prominent white line on each side and thin white lines along the back.
Source: Wikipedia
What plants do the caterpillars eat?
They feed on bedstraws and several legumes such as clovers, trefoils, lucerne and meadow vetchling.
Source: Wikipedia
Same family (Geometridae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Latticed_heath
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.