Coffee Grove Salamander vs Common Rue

Aquiloeurycea cafetalera compared with Ruta graveolens

Key Differences

• Coffee Grove Salamander is Vulnerable while Common Rue is Not Evaluated.

Taxonomic Classification

Rank	Coffee Grove Salamander	Common Rue
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Amphibia (Amphibians)	Magnoliopsida (Dicots)
Order	Caudata (Caudata)	Sapindales (Sapindales)
Family	Plethodontidae	Rutaceae
Genus	Aquiloeurycea	Ruta
Species	Aquiloeurycea cafetalera	Ruta graveolens

Conservation Status

Coffee Grove Salamander

VU — Vulnerable

Common Rue

NE — Not Evaluated

Physical Characteristics

Attribute	Coffee Grove Salamander	Common Rue
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Coffee Grove Salamander

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Mexico. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Rue

Habitat

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

Range

Widely distributed across Africa (South Africa), Asia (Japan, Taiwan), Europe (18 countries), North America (Canada, United States), Oceania and the Pacific (Australia), and South America (Brazil, Colombia, Ecuador).

Coffee Grove Salamander

The Coffee Grove Salamander (Aquiloeurycea cafetalera) is a small, fully terrestrial plethodontid salamander in the family Plethodontidae, endemic to the cloud forests and coffee agroforestry zones of the Sierra de Juárez in the Mexican state of Oaxaca. Like all plethodontid salamanders, it is lungless, relying entirely on cutaneous gas exchange through its moist skin, making it exquisitely sensitive to desiccation and temperature changes. Adults are slender, with a reddish-brown dorsum and light-coloured venter, typically measuring 5–8 centimetres in total length. The species inhabits cool, humid cloud forest floor environments and the leaf litter and bark of shade-grown coffee plantations at elevations approximately between 1,500 and 2,500 metres—an association that gives it its common name. The presence of this salamander in coffee agroforestry systems highlights the biodiversity value of traditional shade-grown cultivation compared to sun-grown monocultures. The Coffee Grove Salamander is classified as Vulnerable by the IUCN due to its restricted distribution, estimated extent of occurrence below 5,000 square kilometres, and ongoing threats from habitat loss through deforestation, conversion to sun-grown coffee cultivation, and climate-driven changes to cloud forest conditions. No ex situ conservation programmes are known to be in place.

Common Rue

<em>Ruta graveolens</em>, commonly known as common rue or herb-of-grace, is an aromatic, evergreen subshrub in the family Rutaceae. Native to the Balkan Peninsula and southwestern Europe, the species has been widely cultivated and naturalized across Europe, Asia, the Americas, and Australia for centuries. It typically grows in dry, rocky, well-drained soils in sunny positions, and is commonly found in gardens, roadsides, waste ground, and limestone outcrops. The plant produces small yellow-green flowers in dense, flat-topped clusters and distinctive blue-green, strongly aromatic compound leaves containing volatile oils. Common rue has a long history of medicinal and culinary use in Mediterranean cultures, though its essential oils can cause photosensitive skin reactions. The species is not currently evaluated on the IUCN Red List, reflecting limited formal assessment rather than documented threat. It is a hardy plant tolerant of poor soils and drought conditions once established. Pollination is typically carried out by insects attracted to the small but accessible flowers. The plant produces small, lobed seed capsules dispersed primarily by wind and gravity. Biological traits such as average lifespan, body measurements, and detailed dietary interactions remain poorly documented in standardized ecological databases for this species.