HymenopteraColletidae – Cellophane, Plasterer, Masked, and Allied Bees

Buckwheat Masked Bee

Hylaeus polifolii

This record describes Hylaeus polifolii (species). Recorded family: Colletidae. Recorded order: Hymenoptera.

Identification and Appearance

Buckwheat Masked Bee - Hylaeus polifolii
Contributed by John S. Ascher; Additional contributions by hg , PaleoJon , Nathaniel Green

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Hymenoptera (Ants, Bees, Wasps and Sawflies)
Superfamily
Trigonaloidea
Family
Colletidae (Cellophane, Plasterer, Masked, and Allied Bees)
Subfamily
Diphaglossinae
Genus
Hylaeus (Masked Bees)

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

Habitat and Range

Geographic Range

California and Baja California Discover Life Map

Seasonal Activity

May to August

Diet and Behavior

Diet: Visits flowers from several families. The Hosts section on its Discover Life species page lists known floral associations based on specimen records and images.

Additional species information

Species notes from the sources

Etymology: Hylaeus (Paraprosopis) polifolii (Cockerell, 1901)

About Flies: the wider group

Order-level background for Hymenoptera, the group containing Hylaeus polifolii. 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 Buckwheat Masked Bee (2)

Buckwheat Masked Bee - photo 1
Contributed by John S. Ascher; Additional contributions by hg , PaleoJon , Nathaniel Green
Buckwheat Masked Bee - photo 2
Contributed by John S. Ascher; Additional contributions by hg , PaleoJon , Nathaniel Green

Photo credits: Contributed by John S. Ascher; Additional contributions by hg , PaleoJon , Nathaniel Green

Frequently Asked Questions About Buckwheat Masked Bee

Where is Buckwheat Masked Bee found?

Range: California and Baja California Discover Life Map

What does Buckwheat Masked Bee eat?

The diet of the Buckwheat Masked Bee includes Visits flowers from several families. The Hosts section on its Discover Life species page lists known floral associations based on specimen records and images..

When is Buckwheat Masked Bee active?

Buckwheat Masked Bee: seasonal activity - May to August.

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by John S. Ascher; Additional contributions by hg , PaleoJon , Nathaniel Green. Contributors retain copyright over their individual contributions.