Clover slender vs Common Fieldcap

Parectopa ononidis compared with Agrocybe pediades

Key Differences

Clover slender is Endangered while Common Fieldcap is Least Concern.

Taxonomic Classification

Rank	Clover slender	Common Fieldcap
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Arthropoda (Arthropods)	Basidiomycota (Club Fungi)
Class	Insecta (Insects)	Agaricomycetes (Mushrooms)
Order	Lepidoptera (Butterflies & Moths)	Agaricales (Gilled Mushrooms)
Family	Gracillariidae	Strophariaceae
Genus	Parectopa	Agrocybe
Species	Parectopa ononidis	Agrocybe pediades

Conservation Status

Clover slender

EN — Endangered

Common Fieldcap

LC — Least Concern

Physical Characteristics

Attribute	Clover slender	Common Fieldcap
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Clover slender

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 8 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (7 countries). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Fieldcap

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Found across Europe (5 countries) and North America (United States).

Clover slender

The clover slender moth (Parectopa ononidis) is a small leaf-mining moth in the family Gracillariidae. Native to Europe, this species specializes on restharrow plants (Ononis species) in the legume family Fabaceae as its larval host. Like other Parectopa species, the larvae create distinctive blotch mines in the leaves of their host plants, feeding on the leaf tissue within the epidermis. The adult moth is typically small and narrow-winged, characteristic of the gracillariid family, with patterned forewings. This species inhabits dry grasslands, calcareous meadows, and scrubby areas where its restharrow host plants grow. It has been recorded across parts of central and western Europe, including the British Isles and continental regions. Parectopa ononidis is listed as Endangered on the IUCN Red List, reflecting its restricted habitat requirements and sensitivity to agricultural intensification, which has led to widespread loss of the dry calcareous grasslands it depends on. Conservation efforts for this species focus on maintaining traditional land management practices such as light grazing that support diverse wildflower communities including restharrow.

Common Fieldcap

The Common Fieldcap (<em>Agrocybe pediades</em>) is a saprotrophic fungus belonging to the genus Agrocybe within the family Strophariaceae. It typically produces small, tan to pale brown cap-shaped fruiting bodies and is often found growing in clusters or scattered on lawns, grassy areas, forest floors, decomposing wood, and soil-rich ecosystems. The species typically inhabits forest floors, decomposing wood, and soil ecosystems, obtaining nutrients by breaking down dead organic matter. Its geographic range includes several European countries — Belgium, Denmark, Norway, Portugal, and Sweden — as well as the United States in North America. <em>Agrocybe pediades</em> is assessed as Least Concern on the IUCN Red List, reflecting its broad distribution and apparent stability. Biological traits of this species, including specific data on fruiting body size, lifespan, and ecological preferences, remain poorly documented in the scientific literature. Like other members of its genus, it typically fruits during warmer months and often appears after rainfall in nutrient-rich grassland and woodland habitats.