Northern Rotund-Resin Bee
Anthidiellum notatum
This record describes Anthidiellum notatum (species). Recorded family: Megachilidae. Recorded order: Hymenoptera.
Identification and Appearance

Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Hymenoptera (Ants, Bees, Wasps and Sawflies)
- Superfamily
- Trigonaloidea
- Family
- Megachilidae (Leafcutter, Mason, and Resin Bees, and allies)
- Subfamily
- Megachilinae
- Tribe
- Anthidiini
- Genus
- Anthidiellum (Rotund Resin Bees)
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
Occurs across NA Discover Life Map
Seasonal Activity
April to September.
Diet and Behavior
Diet: The Hosts section on its Discover Life species page lists known floral associations based on specimen records and images.
Life History
Example of nest:
Additional species information
Species notes from the sources
Etymology: Author: Latreille, 1809
About Flies: the wider group
Order-level background for Hymenoptera, the group containing Anthidiellum notatum. 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.
Photos of Northern Rotund-Resin Bee (2)
Photo credits: Contributed by Lynette Elliott; Additional contributions by Beatriz Moisset , John S. Ascher , Harsi S. Parker , hg
Frequently Asked Questions About Northern Rotund-Resin Bee
How big is Northern Rotund-Resin Bee?
Female: 8 mm. Male 7-8 mm.
Where is Northern Rotund-Resin Bee found?
Range: Occurs across NA Discover Life Map
What does Northern Rotund-Resin Bee eat?
The diet of the Northern Rotund-Resin Bee includes The Hosts section on its Discover Life species page lists known floral associations based on specimen records and images..
When is Northern Rotund-Resin Bee active?
Northern Rotund-Resin Bee: seasonal activity - April to September..
What is the life cycle of a Northern Rotund-Resin Bee?
Example of nest:
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