Common Ringlet vs Compact Thread-leaf Century Plant

Coenonympha tullia compared with Agave microceps

Key Differences

• Common Ringlet is Extinct while Compact Thread-leaf Century Plant is Least Concern.

Taxonomic Classification

Rank	Common Ringlet	Compact Thread-leaf Century Plant
Kingdom	Animalia (动物界)	Plantae (植物)
Phylum	Arthropoda (节肢动物门)	Magnoliophyta (木兰植物门)
Class	Insecta (昆蟲綱)	Liliopsida (百合纲)
Order	Lepidoptera (鱗翅目)	Asparagales (天门冬目)
Family	Nymphalidae (Brush-footed Butterflies)	Asparagaceae
Genus	Coenonympha	Agave
Species	Coenonympha tullia	Agave microceps

Conservation Status

Common Ringlet

EX — Extinct

Compact Thread-leaf Century Plant

LC — Least Concern

Physical Characteristics

Attribute	Common Ringlet	Compact Thread-leaf Century Plant
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Ringlet

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (27 countries) and North America (Canada, United States).

Compact Thread-leaf Century Plant

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Common Ringlet

草地眼蝶（Coenonympha tullia）在IUCN红色名录中被列为灭绝（EX）。该物种已被宣告灭绝，野外和人工饲养环境中均无已知存活个体。

Compact Thread-leaf Century Plant

<em>Agave microceps</em>, the compact thread-leaf century plant, is a perennial succulent in the family Asparagaceae native to Mexico, representing one of the smaller members of the ecologically and culturally significant agave genus. Agaves are iconic succulents of arid and semi-arid regions characterised by a rosette of thick, fibrous leaves typically edged with teeth and terminating in a sharp spine. <em>Agave microceps</em> typically forms compact, densely-leaved rosettes with notably narrow, thread-margined leaves, distinguishing it from larger agave species. It inhabits rocky slopes, dry grasslands, and scrublands in its native Mexican range, adapted to well-drained soils and periods of seasonal drought. Like all agaves, it is monocarpic, flowering once after many years of vegetative growth before dying, producing a tall flower spike that provides food resources for bats, hummingbirds, and insects. The species is classified as Least Concern by the IUCN, indicating a stable population without critical current threats, though many agave species face pressure from illegal collection for the horticultural trade and habitat conversion. Agaves play important roles in native ecosystems as food sources for specialist pollinators and as habitat elements on rocky hillsides. Biological traits including average lifespan in the wild, precise rosette dimensions, and population data remain poorly documented for this species compared to more commercially important agaves.