Entoma
Perplexing bumble bee, Bombus perplexus, plate

Bees and bumblebees

Bombus perplexus

Perplexing bumble bee

Its colonies are short-lived: workers appear by late May, numbers are already thinning by June or July, and the species grows scarce by September.

WhereWoodland edges with flowering shrubs
Size12 to 21 mm body length
WhenApril to August

The Perplexing bumble bee has golden, egg-yolk yellow hair across the top of the thorax with black hair below the wing bases, and a black and yellow abdomen. Queens are noticeably larger than workers and males.

Queens emerge from hibernation in late March to found new colonies in woodland edges where blackberries and other shrubs are flowering. Workers and queens can sting if handled or if their nest is disturbed.

Traits

Habitat

Woodland

Colour

Black, Yellow, Orange

Active

Day

To people

Mild

Queens and workers can sting if handled or if their nest is disturbed, but they rarely bother people while foraging.

Activity through the year

Often confused with

Common eastern bumble beenot in guide
Bombus vagans

Has pale yellow hair with a black patch between the wings, while the Perplexing bumble bee's hair is a darker, more orange-tinted yellow without that black patch.

Questions

Is the Perplexing bumble bee dangerous to people?

Mild. Queens and workers can sting if handled or if their nest is disturbed, but they rarely bother people while foraging.

When can you see the Perplexing bumble bee?

The Perplexing bumble bee can be seen from April to August, by day.

Plate retouched from a photo by soo_moths, CC0, iNaturalist Licence

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Last updated 2026-09-27. Every entry is checked against published sources.