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Sticker of Golden semi-slug
Bug card No. 1945 of 4,939

Golden semi-slug

Mysticarion porrectus
Eats: PlantsSnails, slugs and wormsForests and woodsNo legsNot an insect, but a bug cousin

The golden semi-slug is half snail and half slug. It has a shell, but the shell is so small that it cannot hide inside it. The shell is thin and see-through, so you can spot its brightly coloured insides shining through.

Fun fact: this one is not an insect at all, it has no legs! But kids find it on every bug hunt, so it lives in Bug Wiki too.
Lives in
Only eastern Australia, in cool rainforests high in the mountains
Top speed
about 0.02 km/h (0.01 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless. Wash your hands after holding one, like after touching any wild animal.
What does it eat?
It scrapes thin films of algae and mould off the surface of living leaves, like licking a plate clean.
For real!Photo of Golden semi-slug
Picture by Poyt448. CC0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

It likes to rest lying on its side on a leaf, with the tip of its tail curled back.

2

The tip of its tail works like a suction cup, so it sticks to whatever brushes past.

3

It can hitchhike by accident on animals, people and even cars that rub against the leaves.

4

Its little shell sits on its back like a saddle and mainly protects its insides.

5

It lives along the mountains of eastern Australia, from New South Wales up towards Brisbane.

you asked

Most asked questions about Golden semi-slug

?Is the golden semi-slug a snail or a slug?

A bit of both. It has a shell, but the shell is too small to hide in, so it is called a semi-slug.

?What does the golden semi-slug eat?

It scrapes algae and mould off the surface of leaves.

For bug experts

Scientific name
Mysticarion porrectus
Group
Snails, slugs and worms
Family
Helicarionidae
Classification
Gastropoda > Stylommatophora > Helicarionidae
Lives on
Australia and Oceania

Where the facts come from

  1. Mysticarion porrectus (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 Poyt448. CC0, 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: Snails, slugs and worms

Also at home here: Forests and woods

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