kystspydedderkopp
CR

kystspydedderkopp

Silometopus ambiguus

Unknown

Photo: Photo: (c) Matt, some rights reserved (CC BY-NC), uploaded by Matt

Overview

The kystspydedderkopp (Silometopus ambiguus) is a small, cryptic spider species with a distinctive elongated carapace and mottled brown-gray coloration that provides excellent camouflage among coastal vegetation. This specialized arachnid plays a crucial role as both predator of small arthropods and prey for larger invertebrates in its narrow ecological niche.

Silometopus ambiguus, the kystspydedderkopp, faces severe population decline primarily due to habitat loss from coastal development and climate change impacts on its specialized dune ecosystem. The species' extremely limited range and small population size make it particularly vulnerable to environmental disturbances and stochastic events.

Threat summary

Habitat

This species inhabits the narrow transition zones between coastal dunes and salt marshes, specifically dwelling among low-growing halophytic shrubs and grasses. It requires the unique microclimate conditions found in partially stabilized sandy soils with intermittent salt spray exposure.

Frequently asked questions

Why is kystspydedderkopp classified as Critically Endangered?
kystspydedderkopp 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. Silometopus ambiguus, the kystspydedderkopp, faces severe population decline primarily due to habitat loss from coastal development and climate change impacts on its specialized dune ecosystem. The species' extremely limited range and small population size make it particularly vulnerable to environmental disturbances and stochastic events.
Where does kystspydedderkopp live?
kystspydedderkopp occurs in Belgium, Denmark, France, Germany, Netherlands, and Norway (plus 2 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to kystspydedderkopp?
The main threats to kystspydedderkopp 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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