Welcome to the fascinating world of Pyrobombus bees, a diverse and captivating genus of pollinators that play a crucial role in our ecosystems. These bees are known for their brilliant colors, intricate social structures, and essential role in pollination. Let’s delve into the enchanting world of Pyrobombus and discover what makes them so special.

  • Nesting: Preferred nesting sites: underground in abandoned rodent burrows, old bird nests, and other pre-existing cavities. Nesting material: dry grass, moss, and animal fur. Colony size: typically 50-400 individuals. Nest construction: constructed by the queen, who lays eggs and provisions the nest with pollen and nectar. Seasonality: nests are established in spring and can last until late summer.
  • Pollen Carrying Method:
  • Foraging: Pyrobombus species typically exhibit polylectic foraging habits, meaning they collect pollen from a wide variety of flowering plants.
  • Size:
  • Average Length: mm
  • Body Type: Apiform
  • Coloring:
  • Pattern:
  • Sociality:
  • Wings:
  • Eyes:
  • Mandibles:
  • Sting:
  • Tarsal Claws:
  • Abdomen:
  • Antennae: Short
  • Hair:
  • Colorado Native: true
Additional Notes: – Predominantly distributed in the Northern Hemisphere – Known for their robust, furry bodies – Important pollinators in diverse ecosystems – Can inhabit high-altitude and cold environments – Exhibit a variety of color patterns – Bees of this genus often form colonies – Possess the ability to thermoregulate effectively

Identification Tips: – Robust body with dense, long fur – Predominantly black hair on the thorax – Distinct, often bright bands of yellow or orange on the abdomen – Relatively short, even length wings – Large, triangular-shaped face – Enlarged corbicula (pollen sacs) on the hind legs


The genus name Pyrobombus comes from the Greek roots “pyr,” meaning fire, and “bombos,” meaning humming or buzzing. This name perfectly captures the vibrant and buzzing nature of these bees as they flit from flower to flower.

Physical Characteristics

When you encounter a Pyrobombus bee, you’ll be enchanted by its unique physical traits. These bees come in a variety of colors, with striking combinations of yellow, black, white, or red hues. Their long antennae help them navigate their environment, while their hairy bodies aid in pollen collection.

Identifiable Traits

  • Body Shape: Apiform
  • Coloring: Vibrant yellow and black stripes
  • Antennae: Medium length
  • Hair: Dense and furry all over
  • Abdomen: Striped
  • Size: Varies by species
  • Wings: Transparent and delicate
  • Eyes: Large and multifaceted
  • Mandibles: Strong for gathering nectar and pollen
  • Pollen Carrying Structures: Specialized hind legs for pollen collection

Ecological Significance

Pyrobombus bees are essential pollinators, playing a vital role in the reproductive success of many plant species. By transferring pollen from one flower to another, they enable plants to produce fruits and seeds. This process is crucial for maintaining biodiversity and supporting healthy ecosystems.


These bees are found in diverse habitats across the globe, from temperate forests to alpine meadows. Different species of Pyrobombus have adapted to various environments, showcasing their resilience and adaptability.

Social Behavior

Many Pyrobombus species exhibit complex social structures, with a queen leading a colony of workers and drones. These bees collaborate to forage for food, defend their nest, and care for their young. Their intricate communication systems and division of labor are a marvel of nature.

Nesting Practices

Pyrobombus bees build their nests in underground burrows, abandoned rodent holes, or in dense grass. The queen constructs the initial nest and lays eggs, while the workers help raise the brood and maintain the nest’s integrity. These colonies can range in size from a few dozen to hundreds of individuals.

Floral Specialization

Some species of Pyrobombus bees specialize in collecting pollen from specific plant species. By developing close relationships with certain flowers, these bees ensure efficient pollination and contribute to the survival of their preferred plant partners.

Natural Predators

As with many insects, Pyrobombus bees face threats from predators such as birds, spiders, and other insects. These predators hunt bees for food or parasitize their nests, posing challenges to the survival of these essential pollinators.

Conservation Status

Due to habitat loss, pesticide use, and climate change, many bee species, including some Pyrobombus taxa, are facing declines in population. Conservation efforts to protect bee habitats, reduce pesticide use, and promote pollinator-friendly practices are vital in safeguarding the future of these bees.

Human Impact

Humans play a significant role in the survival of Pyrobombus bees. By planting pollinator-friendly flowers, supporting organic farming practices, and raising awareness about the importance of bees, we can help ensure a bright future for these vital pollinators.

Interesting Facts

– Some Pyrobombus bees can fly at speeds of up to 15 miles per hour!
– These bees can visit thousands of flowers in a single day, making them efficient pollinators.
– The buzz of Pyrobombus bees is a symphony of nature, signaling their industrious work in the fields.


For further information on Pyrobombus bees and their ecological importance, please refer to the following studies:
Study on the foraging behavior of Pyrobombus bees
Research on the impact of climate change on Pyrobombus populations


  • Name: Pyrobombus
  • Rank: subgenus

Pyrobombus is a subgenus of bumblebees, with its centres of diversity in Central Asia and north-western North America. The subgenus contains the following species:

ID: 538900

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Parent ID: 52775