HymenopteraColletidae

Davies' Colletes

Colletes daviesanus

This record describes Colletes daviesanus (species). Recorded family: Colletidae. Recorded order: Hymenoptera.

Identification and Appearance

Davies' Colletes - Colletes daviesanus

Size 7 to 9 mm. This is the smallest species of Colletes in the UK. It is more grey brown than other similar species, and has sparser thoracic hair (allowing the mesonotum to shine through). Most solitary bees and wasps are difficult to identify, and can rarely be identified from photos taken in the field. All red-rated records should include a photo, or set of photos, showing the key characters, which may require the specimen. Please include a face shot, side, top and wings. Note whether male or female, explain how the specimen met the key characters and the key used. We will accept records identified by a recognised local or national expert, or that have been identified via the BWARS’ Facebook noting the name of the person/organisation identifying the record (e.g. ‘Stuart Roberts, BWARS Facebook’). May be seen visiting flowers and at its nesting sites. Mid June to mid September. Females provision the nest entirely from flowers in the family Asteraceae, Tansy, Daisies and Ragwort being common forage plants. Will nest in soft steep or vertical faces such as sandstone cliffs, steep cuttings etc. It will also nest in soft mortar joints in brickwork and can cause considerable problems when a large number of bees use the same site. Widely distributed throughout England, Wales and the Channel Islands, but scarce in Scotland, where it is known only from scattered coastal sites as far north as Invernesshire.

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Genus
Colletes

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Habitat

May be seen visiting flowers and at its nesting sites.

Seasonal Activity

Mid June to mid September. Females provision the nest entirely from flowers in the family Asteraceae, Tansy, Daisies and Ragwort being common forage plants.

Diet and Behavior

Life History

Will nest in soft steep or vertical faces such as sandstone cliffs, steep cuttings etc. It will also nest in soft mortar joints in brickwork and can cause considerable problems when a large number of bees use the same site.

Additional species information

Recorded status

Widely distributed throughout England, Wales and the Channel Islands, but scarce in Scotland, where it is known only from scattered coastal sites as far north as Invernesshire.

About Flies: the wider group

Order-level background for Hymenoptera, the group containing Colletes daviesanus. Species-specific details appear above.

Group overview

Hymenoptera includes over 150,000 described species of ants, bees, wasps, and sawflies. Earth harbors approximately 20 quadrillion (20×10^15) ants, with a combined biomass of ~12 megatons of dry carbon - exceeding the combined biomass of all wild birds and mammals (PNAS, 2022).

Ecological role of the group

About 35% of the world's food crops depend on animal pollinators. The chocolate industry, valued at over $100 billion, depends on pollinating flies and midges. Ants are the dominant soil engineers in most terrestrial ecosystems, turning more soil than earthworms in many habitats.

Economic and practical significance of the group

Pollinators contribute $235-577 billion worth of annual global food production (FAO). In the U.S., bee pollination alone benefits crops valued at $18 billion annually, and honey bees are responsible for $5.4 billion in agricultural productivity. Between April 2023-2024, 55.1% of managed honey bee colonies were lost. The U.S. bee population dropped from 5 million to 2.5 million.

Recorded sources for this group: FAO, USDA, EPA, PNAS (2022), US Fish & Wildlife Service. Imported estimates may describe particular regions or reporting periods.

Explore Hymenoptera families and species →

Photos of Davies' Colletes (4)

Davies' Colletes - photo 1
Davies' Colletes - photo 2
Davies' Colletes - photo 3
Davies' Colletes - photo 4

Frequently Asked Questions About Davies' Colletes

What is Davies' Colletes?

Davies' Colletes (Colletes daviesanus) is a species in the family Colletidae, within the order Hymenoptera.

How big is Davies' Colletes?

7 to 9 mm. This is the smallest species of Colletes in the UK. It is more grey brown than other similar species, and has sparser thoracic hair (allowing the mesonotum to shine through).

Where is Davies' Colletes found?

Habitat: May be seen visiting flowers and at its nesting sites.

When is Davies' Colletes active?

Davies' Colletes: seasonal activity - Mid June to mid September. Females provision the nest entirely from flowers in the family Asteraceae, Tansy, Daisies and Ragwort being common forage plants..

What is the life cycle of a Davies' Colletes?

Will nest in soft steep or vertical faces such as sandstone cliffs, steep cuttings etc. It will also nest in soft mortar joints in brickwork and can cause considerable problems when a large number of bees use the same site.