Brown Cobblestone Lichen vs Clouded slender

Acarospora fuscata compared with Caloptilia populetorum

Taxonomic Classification

Rank	Brown Cobblestone Lichen	Clouded slender
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Arthropoda (Arthropods)
Class	Lecanoromycetes (Lecanoromycetes)	Insecta (Insects)
Order	Acarosporales (Acarosporales)	Lepidoptera (Butterflies & Moths)
Family	Acarosporaceae	Gracillariidae
Genus	Acarospora	Caloptilia
Species	Acarospora fuscata	Caloptilia populetorum

Conservation Status

Brown Cobblestone Lichen

LC — Least Concern

Clouded slender

LC — Least Concern

Physical Characteristics

Attribute	Brown Cobblestone Lichen	Clouded slender
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Cobblestone Lichen

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, and United States.

Clouded slender

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (6 countries).

Brown Cobblestone Lichen

The Brown Cobblestone Lichen (Acarospora fuscata) is a species in the genus Acarospora. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Clouded slender

Clouded slender refers to a small moth in one of several microlepidopteran families characterized by narrow, elongated wings with clouded or mottled patterning, the 'slender' designation reflecting the elongated wing shape typical of gracillariid leaf miners, stathmopodid moths, or similar narrow-winged families. Slender moths of this type are often highly specialized as leaf miners or stem borers in their larval stage, with adults emerging in spring or summer from pupae formed within the mined leaf or on adjacent vegetation. The clouded wing pattern typically consists of subtle brown, grey, and cream mottling or diffuse cross-banding that provides camouflage against bark and foliage substrates. Many slender moth species in Europe and Asia have restricted distributions tied to the availability of specific larval host plants, making them sensitive to changes in plant community composition. Documentation of species through light trapping and larval rearing from identified host plants contributes to understanding the full diversity of microlepidoptera in temperate and subtropical habitats where hundreds of species remain incompletely studied.