Bumblebee (Bombus terrestris): Sting, Diet, Habitat, and Reproduction

The common bumblebee (Bombus terrestris) is one of Europe’s most familiar bumblebee species. It’s easy to recognize by its bold horizontal yellow-and-black bands and a pale, whitish patch toward the end of the abdomen. Although it can sting, it usually won’t unless threatened. Like other bumblebees, it feeds on pollen and nectar from many types of flowers, and its colony life cycle—especially reproduction—is remarkably similar to that of bees and ants. Below you’ll find an improved, clear English overview of its key traits, behavior, diet, reproduction, and conservation context.

Table of Contents

• Characteristics

• Where the Common Bumblebee Lives

• Behavior and Social Structure

• Diet and Pollination

• Reproduction and Colony Cycle

• Threats and Conservation

• Interesting Facts

Characteristics

• Distinctive look: Compared with many other bumblebees, Bombus terrestris is often identified by a whitish patch on the abdomen.

• Size: Workers typically measure about 1.5–2 cm long, while the queen can reach roughly 2–3 cm.

• Overwintering queen: In most climates, the queen is the only colony member that survives winter. She emerges in spring to start a new nest.

• Tongue length: The queen’s tongue can be up to ~10 mm long; workers and males generally have slightly shorter tongues.

• Wings: The wings are thin, transparent, and slightly translucent.

• Body shape vs. honeybees: Bumblebees have a more robust body and denser hair than honeybees, helping them carry pollen and regulate temperature.

Can the Common Bumblebee Sting?

Yes—bumblebees can sting using their stinger and inject venom. However, stinging is uncommon and usually occurs only when the insect is handled, trapped, or the nest is disturbed. For most people, a sting causes temporary pain, redness, and swelling. A small percentage of individuals may develop an allergic reaction, which can be serious and requires medical attention.

Where the Common Bumblebee Lives

This species is native to parts of Africa, central and southern Europe, Afghanistan, and the Canary Islands. Over time, it has expanded beyond its original range. In some regions—such as parts of Japan—it is considered an introduced (non-native) invasive species because it can outcompete local bumblebees or hybridize with them.

Today, it can be found in a wide range of environments, including:

• Woodlands and forest edges

• Parks and gardens

• Riverbanks and hedgerows

• Meadows and grasslands

• Urban and suburban areas (even close to, or within, cities)

Behavior and Social Structure

The common bumblebee is a classic example of a eusocial insect, meaning it lives in a highly organized colony with clear roles and a division of labor—similar to honeybees and ants.

Colony roles

• Queen: The colony founder and primary egg-layer.

• Workers: Females that do most foraging, nest construction, brood care, and defense. In some phases of the colony, certain workers may be fertile.

• Males (drones): Produced mainly for mating, typically later in the season.

This structured “caste system” helps ensure that food collection, nest maintenance, and the care of developing young continue efficiently throughout the active season.

Diet and Pollination

The common bumblebee feeds mainly on pollen and nectar from many kinds of flowering plants. It is also known for specialized foraging techniques that make it an important pollinator in both wild ecosystems and agriculture.

Buzz pollination (vibratory pollination)

For certain plants—such as tomato, eggplant, and potato—pollen can be difficult to access. Bombus terrestris can grip the flower and vibrate its flight muscles to shake pollen loose. This technique is commonly called buzz pollination.

When pollen is hard to access

If it can’t obtain pollen effectively through vibration, it may use an alternate method: it can make a small opening near the base of the flower to reach resources more easily. (In many contexts this behavior is discussed as “nectar robbing,” depending on the flower and what is being accessed.)

Reproduction and Colony Cycle

The reproductive cycle of the common bumblebee is one of the most striking examples of seasonal social life in insects.

1) Winter: colony dies back, queen survives

As winter approaches, most colony members die. The queen overwinters, typically in a sheltered spot, and becomes the seed for the next generation.

2) Spring: the queen starts a new nest

After hibernation, the queen emerges and searches for a nest site. Common nest locations include:

• Small holes in the ground

• Abandoned burrows made by rodents

3) Early nesting: food stores and first workers

At first, the queen forages alone, collecting pollen and nectar and building up a reserve of food. She lays the first eggs, which develop into infertile worker females. These early workers take over many tasks—brood care, nest expansion, and foraging—allowing the queen to focus increasingly on egg-laying.

4) Later season: new queens and males

As the colony grows, it begins producing:

• Fertile females that can become new queens (often better fed than regular workers)

• Males, which are typically produced closer to the end of the season

How males are produced

Males can hatch from unfertilized eggs, a reproductive system also seen in many other bees and social insects.

5) End of cycle: succession

When the original queen ages and the season ends, newly produced queens mate and then seek places to overwinter. The cycle restarts the following spring when those queens emerge to found new colonies.

Threats and Conservation

In much of its native range, the common bumblebee is not currently considered endangered. However, it can still face pressures similar to those affecting many pollinators:

• Habitat loss and fewer flower-rich spaces

• Pesticide exposure

• Pollution and broader environmental change

At the same time, in places where Bombus terrestris has been introduced, it can become a conservation problem by competing with local bumblebees or contributing to population declines of native species.

Interesting Facts

• Built-in “heating system”: By vibrating their flight muscles, they can generate heat when it’s cold.

• Play behavior: Some studies suggest bumblebees may repeatedly interact with objects (like colored balls) in ways researchers interpret as play-like behavior.

• Males from unfertilized eggs: A notable feature of their reproductive biology.

• Queens are often monogamous: They typically mate with one male.

• Greenhouse helpers: They’re widely used as pollinators in greenhouse agriculture.

• Morning peak activity: Pollen-collecting activity is often strongest in the early morning (commonly around 7–8 a.m.).

Further Reading

If you’re exploring similar topics, you may also enjoy learning about how to tell bees, wasps, and bumblebees apart—especially by body shape, hair density, flight patterns, and nesting behavior.

Bibliography

• Ings, T. C. (2006). Bombus terrestris: Humble Pollinator or Assiduous Invader? University of London.

• Goulson, D. (2022). Una historia con aguijón: Mis aventuras con los abejorros. Capitán Swing Libros.