Cliff Mason Bee vs Gold-fringed Mason Bee

Osmia xanthomelana compared with Osmia aurulenta

Key Differences

Cliff Mason Bee is Not Evaluated while Gold-fringed Mason Bee is Vulnerable.

Taxonomic Classification

Rank	Cliff Mason Bee	Gold-fringed Mason Bee
Kingdom same	Animalia (حيوانات)	Animalia (حيوانات)
Phylum same	Arthropoda (مفصليات الأرجل)	Arthropoda (مفصليات الأرجل)
Class same	Insecta (حشرات)	Insecta (حشرات)
Order same	Hymenoptera (غشائيات الأجنحة)	Hymenoptera (غشائيات الأجنحة)
Family same	Megachilidae	Megachilidae
Genus same	Osmia	Osmia
Species	Osmia xanthomelana	Osmia aurulenta

Evolutionary Relationship

Cliff Mason Bee and Gold-fringed Mason Bee share a common ancestor at the Genus level: Osmia.

استعراض Genus: Osmia

Conservation Status

Cliff Mason Bee

NE — Not Evaluated

Gold-fringed Mason Bee

VU — Vulnerable

Physical Characteristics

Attribute	Cliff Mason Bee	Gold-fringed Mason Bee
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cliff Mason Bee

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Luxembourg, and Sweden.

Gold-fringed Mason Bee

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Luxembourg, Norway, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Cliff Mason Bee

The Cliff Mason Bee, Osmia species, is one of numerous solitary bees in the large genus Osmia, family Megachilidae, whose females construct individual brood cells from mud, clay, or resin in crevices on cliff faces, rock walls, and outcrops. Mason bees are important pollinators of wildflowers and orchard crops, collecting pollen and nectar to provision their nests. Cliff mason bees take advantage of natural crevices in rock faces as nesting sites, plastering cells of mud mixed with sand grains or plant material to subdivide the crevice into individual egg chambers. Each cell contains a pollen-nectar mass food provision and a single egg before being sealed with a mud plug. Males typically emerge first in spring, followed by females, and adults live for only several weeks, devoted entirely to mating and nesting. Cliff-nesting Osmia species are found in rocky habitats across the Holarctic region, from Europe through Asia and North America. The availability of suitable nesting sites on cliff faces, combined with the proximity of diverse wildflower resources, determines population density. Many solitary bee populations have declined in recent decades due to loss of nesting habitat and floral resources. Specific conservation status depends on the species intended.