California alder vs Hover fly

Alnus rhombifolia compared with Eristalis rupium

Key Differences

• California alder is Least Concern while Hover fly is Near Threatened.

Taxonomic Classification

Rank	California alder	Hover fly
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Arthropoda (Arthropods)
Class	Magnoliopsida (Dicots)	Insecta (Insects)
Order	Fagales (Beeches & Oaks)	Diptera (Diptera)
Family	Betulaceae	Syrphidae
Genus	Alnus	Eristalis
Species	Alnus rhombifolia	Eristalis rupium

Conservation Status

California alder

LC — Least Concern

Hover fly

NT — Near Threatened

Physical Characteristics

Attribute	California alder	Hover fly
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

California alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found in Canada.

Hover fly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

California alder

The California alder (Alnus rhombifolia) is a species in the genus Alnus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.