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Sticker of Western tailed-blue
Bug card No. 4697 of 4,939

Western tailed-blue

Everes amyntula
Eats: Nectar and pollenButterfliesForests and woods6 legs

The western tailed-blue is a small blue butterfly with a tiny tail on each back wing. Underneath it is chalky white with black dots and an orange spot near the tail. The males are blue on top and the females are brown with some blue.

Lives in
Western North America, from Alaska to Baja California, and east across Canada to Maine
Wingspan
2.2 to 2.9 cm (0.87 to 1.1 in)
Top speed
about 10 km/h (6.2 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It cannot bite or sting.
What does it eat?
The adults drink flower nectar and also sip from mud and animal droppings. The caterpillars eat pea plants like milkvetch and vetch.
For real!Photo of Western tailed-blue
Picture by Doug Waylett. CC BY 2.0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Western tailed-blue wings about 2.9 cm tip to tip (1.1 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 38 seconds

How big is Western tailed-blue compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It flies in spring and summer, from March to July.

2

Its eggs hatch in only 4 to 5 days.

3

The caterpillar is yellowish to green, with fine white hairs and pink and purple dashes.

4

Males spend the day patrolling between bushes and hillsides looking for females.

you asked

Most asked questions about Western tailed-blue

?What does the western tailed-blue eat?

Adults drink nectar and sip from mud and droppings. Caterpillars eat pea plants.

?Where does the western tailed-blue live?

In western North America, in forest clearings, meadows and prairies.

For bug experts

Scientific name
Everes amyntula
Group
Butterflies
Family
Lycaenidae
Classification
Insecta > Lepidoptera > Lycaenidae
Lives on
North America

Where the facts come from

  1. Western tailed-blue (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 Doug Waylett. CC BY 2.0, 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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More from the same group: Butterflies

Also at home here: Forests and woods

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