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Sticker of Rusty patched bumblebee
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Rusty patched bumblebee

Bombus affinis

The rusty patched bumblebee is a big, fluffy black and yellow bee. The workers have a rusty orange patch on their back, which gave it its name. Sadly it has become very rare, and people are working hard to protect it.

Lives in
Eastern and midwestern United States and southern Canada, in fields, wetlands, farmland and woods
Length
1 to 1.6 cm (0.39 to 0.63 in)
Top speed
about 15 km/h (9.3 mph)
Flying, estimate
Can it hurt you?
Can bite or sting
What does it eat?
It drinks nectar and collects pollen from many kinds of flowers, like milkweed.
For real!Photo of Rusty patched bumblebee
Picture by USGS Bee Inventory and Monitoring Lab from Beltsville, Maryland, USA. Public domain, via Wikimedia Commons.

How big is it?

How long is it?

Rusty patched bumblebee about 1.6 cm long (0.63 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)
as long as 2.5 grains of rice in a rowcould fly across a whole football pitch in 25 secondsmoves 260 times its own body length every second

How big is Rusty patched bumblebee compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

In 2017 it became the first bee in the mainland United States to be put on the list of endangered animals.

2

It often builds its nest underground in an old mouse or rat hole. Once a nest was even found inside an old armchair left outside.

3

The queen is the biggest, up to 22 millimetres long.

4

Its tongue is shorter than that of any other bumblebee.

5

It can cope with colder weather than most other bumblebees.

you asked

Most asked questions about Rusty patched bumblebee

?Why is the rusty patched bumblebee endangered?

It has disappeared from most of the places where it used to live. It needs flowers, nest sites and winter hideouts close together, which makes it easy to lose.

?How big is the rusty patched bumblebee?

Workers are 10 to 16 millimetres long and queens about 2 centimetres.

For bug experts

Scientific name
Bombus affinis
Group
Bees and bumblebees
Family
Apidae
Classification
Insecta > Hymenoptera > Apidae
Lives on
North America
Also known as
Rusty patched bumble bee

Where the facts come from

  1. Bombus affinis (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 USGS Bee Inventory and Monitoring Lab from Beltsville, Maryland, USA. Public domain, Wikimedia Commons. The round sticker of this bug is cut from the same 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.

More from the same group: Bees and bumblebees

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