4-Spotted Digger Wasp vs Brook Alder

Crossocerus quadrimaculatus compared with Alnus maritima

Key Differences

4-Spotted Digger Wasp is Least Concern while Brook Alder is Endangered.

Taxonomic Classification

Rank	4-Spotted Digger Wasp	Brook Alder
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Hymenoptera (Ants, Bees & Wasps)	Fagales (Beeches & Oaks)
Family	Crabronidae	Betulaceae
Genus	Crossocerus	Alnus
Species	Crossocerus quadrimaculatus	Alnus maritima

Conservation Status

4-Spotted Digger Wasp

LC — Least Concern

Brook Alder

EN — Endangered

Physical Characteristics

Attribute	4-Spotted Digger Wasp	Brook Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

4-Spotted Digger Wasp

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Brook Alder

Habitat

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

Range

Distributed across Belgium, France, Netherlands, and United Kingdom. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

4-Spotted Digger Wasp

The 4-Spotted Digger Wasp (Crossocerus quadrimaculatus) is a species in the genus Crossocerus. It is currently classified as Least Concern on the IUCN Red List. It is found across Belgium, Denmark, Norway, and Sweden, inhabiting diverse terrestrial and freshwater habitats.

Brook Alder

The Brook Alder (Alnus maritima) is a species in the genus Alnus. It is currently classified as Endangered on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.