Pyrobombus (also known as Fiery-tailed bees) is a subgenus of bumblebees, with its centres of diversity in Central Asia and north-western North America.

Pyrobombus bees also face issues such as climate change, loss of habitat, urbanization, and industrial agriculture.

[5] This subgenus of bees can pollinate which helps plants fertilise and grow fruit that is essential to the biodiversity and life of the environment.

[6] This subgenus may vary in their characteristics such as body size, wingspan, and tongue length for individual species, but like all bees, they possess wings, a head, thorax, and abdomen.

Like all bees, species of the Pyrobombus have translucent wings that can have different colour tinges of clear, black, brown and amber.

[7] In a study by Plowright and Stephen (1973) have examined 18 different enzymes and found the taxon sample had close relationships with B. jonellus and B. frigidus.

Generally, plant material such as dry grass, sticks, petals, and other small deposits would be collected and accumulated around and or in the nest canal for camouflage.

European Pyrobombus species have the tendency to be more stubborn in site preference, whereby their selection of nesting areas are limited.

Through vibrating at high frequencies, pollen can be expelled from the bee's body to transport back to their colony and other plants for fertilization.

Although it forages on a variety of plants, the P. brodmannicus bees in Caucasia specialise in the Boraginaceae in which the numbers are low.

[5] Pyrobombus bees are commonly widespread in the Northern Hemisphere and covers close to 50% of North American fauna.