Base-spotted Pigmy vs Brook-Side Alder

Stigmella basiguttella compared with Alnus serrulata

Key Differences

• Base-spotted Pigmy is Near Threatened while Brook-Side Alder is Least Concern.

Taxonomic Classification

Rank	Base-spotted Pigmy	Brook-Side Alder
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Lepidoptera (Butterflies & Moths)	Fagales (Beeches & Oaks)
Family	Nepticulidae	Betulaceae
Genus	Stigmella	Alnus
Species	Stigmella basiguttella	Alnus serrulata

Conservation Status

Base-spotted Pigmy

NT — Near Threatened

Brook-Side Alder

LC — Least Concern

Physical Characteristics

Attribute	Base-spotted Pigmy	Brook-Side Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Base-spotted Pigmy

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

Brook-Side Alder

Habitat

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

Range

Distributed across Canada and United States.

Base-spotted Pigmy

The Base-spotted Pigmy (Stigmella basiguttella) is a species in the genus Stigmella. It is currently classified as Near Threatened on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Brook-Side Alder

The Brook-Side Alder (Alnus serrulata) 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.