Clusterspike False Indigo vs Common Spruce Bell

Amorpha crenulata compared with Epinotia tedella

Key Differences

• Clusterspike False Indigo is Critically Endangered while Common Spruce Bell is Least Concern.

Taxonomic Classification

Rank	Clusterspike False Indigo	Common Spruce Bell
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Arthropoda (Arthropods)
Class	Magnoliopsida (Dicots)	Insecta (Insects)
Order	Fabales (Legumes & Allies)	Lepidoptera (Butterflies & Moths)
Family	Fabaceae	Tortricidae
Genus	Amorpha	Epinotia
Species	Amorpha crenulata	Epinotia tedella

Conservation Status

Clusterspike False Indigo

CR — Critically Endangered

Common Spruce Bell

LC — Least Concern

Physical Characteristics

Attribute	Clusterspike False Indigo	Common Spruce Bell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Clusterspike False Indigo

Habitat

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

Common Spruce Bell

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Clusterspike False Indigo

Amorpha crenulata, known as clusterspike false indigo or crenulate lead plant, is a critically endangered flowering shrub in the family Fabaceae with a highly restricted distribution confined to Miami-Dade County in southern Florida, USA. This species represents one of North America's rarest plants, with remaining populations numbering in the hundreds of individuals occurring in pine rockland habitat, an ecosystem itself ranked among the most imperiled in the United States. Pine rocklands are fire-dependent communities on exposed oolitic limestone, characterized by an open canopy of slash pine over diverse understory, and have been reduced to less than two percent of their historical extent by urban development in the Miami metropolitan area. Amorpha crenulata produces elongated spikes of small purple flowers typical of the genus and was historically more widespread across the Miami Rock Ridge before land development eliminated most habitat. Current populations exist primarily within Everglades National Park and a few private preserves. Its Critically Endangered status reflects the tiny remaining population, extreme habitat restriction, ongoing threats from urbanization, altered fire regimes, and sea-level rise that threatens low-elevation limestone habitats. Conservation efforts focus on habitat protection, controlled burning to maintain pine rockland structure, and ex situ seed banking.

Common Spruce Bell

<em>Epinotia tedella</em>, commonly known as the common spruce bell, is a small tortrix moth in the family Tortricidae, distributed across Europe wherever its primary host plant, <em>Picea abies</em> (Norway spruce), occurs. This species typically inhabits spruce forests, forest plantations, and woodland edges with significant spruce components, from lowland areas to montane elevations throughout much of the European continent. Its geographic range extends from Scandinavia and the British Isles south through central and eastern Europe, broadly following the distribution of its conifer hosts. Classified as Least Concern on the IUCN Red List, <em>Epinotia tedella</em> maintains stable populations across its range and is not considered threatened. The larvae feed internally within the needles of <em>Picea</em> species, mining leaf tissue and occasionally causing noticeable damage during outbreak years in plantation forestry. Adults are small moths with a wingspan of approximately 12–16 mm, displaying forewing patterns of brownish-grey with silvery strigulae typical of the genus. The species produces one generation per year, with adults flying from late spring to midsummer. Biological traits such as average lifespan in years, precise body weight, and detailed population dynamics remain poorly documented for this minor forestry pest. Diet consists primarily of Norway spruce needle tissue during the larval stage.