Beech Tarcrust vs Long-tailed Sylph

Biscogniauxia nummularia compared with Aglaiocercus kingii

Key Differences

Beech Tarcrust is Data Deficient while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Beech Tarcrust	Long-tailed Sylph
Kingdom	Fungi (फफूंद)	Animalia (प्राणी)
Phylum	Ascomycota (पुट कवक)	Chordata (रज्जुकी)
Class	Sordariomycetes (Sordariomycetes)	Aves (पक्षी)
Order	Xylariales (Xylariales)	Apodiformes (Apodiformes)
Family	Graphostromataceae	Trochilidae
Genus	Biscogniauxia	Aglaiocercus
Species	Biscogniauxia nummularia	Aglaiocercus kingii

Conservation Status

Beech Tarcrust

DD — Data Deficient

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Beech Tarcrust	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Beech Tarcrust

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (7 countries), and South America (Brazil).

Long-tailed Sylph

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Beech Tarcrust

The Beech Tarcrust (Biscogniauxia nummularia) is a species in the genus Biscogniauxia. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment. Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Long-tailed Sylph

One of the most strikingly ornamented hummingbirds, male long-tailed sylphs have iridescent green plumage and dramatically elongated, ribbon-like outer tail feathers reaching up to 22 cm — over three times the body length. Found in Andean cloud forests of Colombia and Venezuela, they inhabit humid montane forest between 1,400–2,800 meters elevation. Males perform elaborate display flights to attract females. Their extravagant tails are a classic example of sexual selection via female preference.