Base-spotted Pigmy vs Common Rowan Pigmy

Stigmella basiguttella compared with Stigmella nylandriella

Key Differences

• Base-spotted Pigmy is Near Threatened while Common Rowan Pigmy is Least Concern.

Taxonomic Classification

Rank	Base-spotted Pigmy	Common Rowan Pigmy
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class same	Insecta (Insects)	Insecta (Insects)
Order same	Lepidoptera (Butterflies & Moths)	Lepidoptera (Butterflies & Moths)
Family same	Nepticulidae	Nepticulidae
Genus same	Stigmella	Stigmella
Species	Stigmella basiguttella	Stigmella nylandriella

Evolutionary Relationship

Base-spotted Pigmy and Common Rowan Pigmy share a common ancestor at the Genus level: Stigmella.

Conservation Status

Base-spotted Pigmy

NT — Near Threatened

Common Rowan Pigmy

LC — Least Concern

Physical Characteristics

Attribute	Base-spotted Pigmy	Common Rowan Pigmy
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.

Common Rowan Pigmy

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.

Common Rowan Pigmy

<em>Stigmella nylandriella</em>, the common rowan pygmy, is a small moth in the family Nepticulidae, a group known as pygmy moths or nepticulid moths. The species is distributed across northern and central Europe, with confirmed records from Belgium, Denmark, Norway, and Sweden. As the common name suggests, the larvae of this species are leaf miners of rowan (<em>Sorbus aucuparia</em>) and related trees in the family Rosaceae. The larvae typically create distinctive winding mines in the leaves of their host plants during the growing season, feeding on leaf tissue while sheltered within the mine. Adults are tiny, with wingspans typically just a few millimeters, characteristic of the Nepticulidae family. The species completes its lifecycle through egg, larval, pupal, and adult stages, with adults typically emerging in summer months. It is assessed as Least Concern by the IUCN, reflecting stable populations associated with the widespread availability of rowan trees throughout temperate European forests and hedgerows. The species typically inhabits woodland edges, hedgerows, parks, and gardens where host trees are present. Biological traits such as average lifespan, body measurements, and detailed dietary composition beyond leaf mining behavior remain poorly documented in standardized ecological literature.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden