Bug Wiki
Sticker of Brown soldier bug
Bug card No. 0687 of 4,939

Brown soldier bug

Cermatulus nasalis

The brown soldier bug is a shield bug that hunts other insects. It is brown with a big black triangle on each wing. It stabs its prey with its beak and drinks the juices, like through a straw.

Lives in
Australia and New Zealand
Length
1.1 to 1.2 cm (0.41 to 0.49 in)
Top speed
about 0.2 km/h (0.12 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless to people. Just watch it hunt on the leaves.
What does it eat?
It hunts caterpillars and other insects with soft bodies. Its babies first eat what is on their eggshells and a bit of plant sap.
For real!Photo of Brown soldier bug
Picture by Steve Kerr. CC BY 4.0, via Wikimedia Commons.

How big is it?

How long is it?

Brown soldier bug about 1.2 cm long (0.49 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)
as long as 2 grains of rice in a rowcould run across a dinner table in 18 seconds

How big is Brown soldier bug compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

How fast is it?

cool stuff

Fun facts

1

The mother lays about thirty black eggs in three neat rows on a leaf or a piece of bark.

2

The babies are red with black heads when they hatch.

3

The babies change their skin five times, and every time they get a new pattern of red and black.

4

Only one family of these bugs grows up each year, and they breed in summer.

5

Females are about 1 centimetre long, and the males are a little smaller.

you asked

Most asked questions about Brown soldier bug

?What does the brown soldier bug eat?

Caterpillars and other soft-bodied insects. It sucks out their juices with its beak.

?Is the brown soldier bug dangerous?

No. It hunts insects and is harmless to people.

For bug experts

Scientific name
Cermatulus nasalis
Named by
Westwood, 1837
Group
True bugs and cicadas
Family
Pentatomidae
Classification
Insecta > Hemiptera > Pentatomidae
Lives on
Australia and Oceania
Also known as
Glossy shield bug

Where the facts come from

  1. Cermatulus nasalis (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 Steve Kerr. CC BY 4.0, 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.

Bug Wiki honey jar For grown-ups: Bug Wiki is free, with no ads and no tracking. A small tip helps keep it online.Leave a tip

More from the same group: True bugs and cicadas

Also at home here: Gardens and meadows

Honey jarfor grown-ups