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Sticker of Sussex emerald
Bug card No. 4244 of 4,939

Sussex emerald

Thalera fimbrialis
Name means: “Thalera comes from a Greek word for blooming and fresh, after its spring green wings. Fimbrialis means fringe, after the red chequered fringe on its wings”
Eats: PlantsMothsGardens and meadows6 legs

The Sussex emerald is a moth with soft green wings crossed by white lines. The edges of its wings have a fringe that is white and reddish brown, like a chequered border. As it gets older, the green can fade to yellowish.

Lives in
Europe and across Asia to the Amur River in China. In Britain only on shingle at Dungeness and Rye
Wingspan
2.5 to 3 cm (0.98 to 1.2 in)
Top speed
about 12 km/h (7.5 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It cannot bite or sting.
What does it eat?
Its caterpillars eat many different plants. In Britain they mostly eat wild carrot.
For real!Photo of Sussex emerald
Picture by Siga. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Sussex emerald wings about 3 cm tip to tip (1.2 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)
wings as wide as 5 grains of rice in a rowcould fly across a whole football pitch in 32 seconds

How big is Sussex emerald compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

In Britain it is very rare and only breeds at Dungeness in Kent and at one place in Rye, East Sussex.

2

When its caterpillar sheds its old skin, it eats it up.

3

The caterpillar's head has a deep split down the middle, and two little spikes stick up above it.

4

The caterpillar spends the winter half grown.

5

The moths fly from June to August, depending on where they live.

you asked

Most asked questions about Sussex emerald

?Where does the Sussex emerald live?

Across Europe and Asia. In Britain it is very rare and lives only on shingle at Dungeness and Rye.

?What does the Sussex emerald caterpillar eat?

Many different plants. In Britain it mostly eats wild carrot.

For bug experts

Scientific name
Thalera fimbrialis
Named by
Scopoli, 1763
Group
Moths
Family
Geometridae
Classification
Insecta > Lepidoptera > Geometridae
Lives on
Europe, Asia

Where the facts come from

  1. Thalera fimbrialis (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
  2. Picture by Siga. CC BY-SA 3.0, Wikimedia Commons. The sticker of this bug is drawn from this picture.

If we got something wrong, sorry, we are bug fans, not a science journal. Tell us at [email protected] and we will fix it.

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