cambridges krabspin
VU

cambridges krabspin

Xysticus luctator

Unknown

Photo: iNaturalist: (c) Hubert Szymanski, some rights reserved (CC BY-NC), uploaded by Hubert Szymanski

Overview

The Cambridge krabspin (Xysticus luctator) is a small crab spider characterized by its cryptic brown and white mottled coloration that provides excellent camouflage against tree bark and lichen. These ambush predators play a crucial role in forest ecosystems by controlling populations of flying insects, particularly small flies and moths that they capture on tree trunks and branches.

The Cambridge krabspin spider faces significant threats from habitat degradation and fragmentation of its specialized microhabitats. Climate change and agricultural intensification are reducing the availability of suitable hunting grounds and web-building sites, while urbanization continues to fragment remaining populations across its range.

Threat summary

Habitat

Inhabits low vegetation, grasslands, heathlands, and woodland edges where it constructs small orb webs close to the ground. Prefers areas with diverse plant structure and abundant small flying insects, typically found in semi-natural habitats with minimal disturbance.

Frequently asked questions

Why is cambridges krabspin classified as Vulnerable?
cambridges krabspin is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. The Cambridge krabspin spider faces significant threats from habitat degradation and fragmentation of its specialized microhabitats. Climate change and agricultural intensification are reducing the availability of suitable hunting grounds and web-building sites, while urbanization continues to fragment remaining populations across its range.
Where does cambridges krabspin live?
cambridges krabspin occurs in Austria, Azerbaijan, Belgium, Bulgaria, Czechia, and Denmark (plus 17 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 cambridges krabspin?
The main threats to cambridges krabspin 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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