CR

Euso muehlenbergi

Unknown

Overview

Euso muehlenbergi is a species of spiders in the family Ochyroceratidae. It was first described in 1998 by Michael Saaristo. As of 2021, it is the only species in the genus Euso, erected by Michael Saaristo in 2001. It is found in the Seychelles.

Euso muehlenbergi faces severe population decline due to habitat destruction from urban development and agricultural expansion in its limited range. The species' specialized habitat requirements make it particularly vulnerable to environmental changes, with remaining populations fragmented across increasingly isolated patches. Climate change poses an additional threat through altered precipitation patterns that affect the microhabitat conditions essential for this species' survival.

Threat summary

Habitat

Euso muehlenbergi inhabits specialized microhabitats within temperate forest ecosystems, typically found in areas with specific moisture and soil conditions. The species requires undisturbed forest floor environments with particular vegetation associations and substrate characteristics.

Forest· majorMarine coastal/supratidal· major

Conservation measures underway

Site/area management

Other threatened species in OCHYROCERATIDAE

VU

Roche roche

Unknown
VU

Ouette ouette

Unknown

Threatened in Seychelles

EN

Acropora mossambica

Declining
EN

Imperturbatia violescens

Stable
EN

Aldabra Fody

Foudia aldabrana

Increasing
CR

Ariadna ustulata

Declining

Frequently asked questions

Why is Euso muehlenbergi classified as Critically Endangered?
Euso muehlenbergi is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Euso muehlenbergi faces severe population decline due to habitat destruction from urban development and agricultural expansion in its limited range. The species' specialized habitat requirements make it particularly vulnerable to environmental changes, with remaining populations fragmented across increasingly isolated patches. Climate change poses an additional threat through altered precipitation patterns that affect the microhabitat conditions essential for this species' survival.
Where does Euso muehlenbergi live?
Euso muehlenbergi occurs in Seychelles. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Euso muehlenbergi?
The main threats to Euso muehlenbergi are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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