Swamp Lookout Spider
CRCritically Endangered

Swamp Lookout Spider

Notioscopus sarcinatus

The Swamp Lookout Spider (Notioscopus sarcinatus) is a critically endangered arachnid species with extremely limited distribution and poorly understood ecology. This spider inhabits specialized wetland environments where it constructs distinctive webs in elevated positions among marsh vegetation, giving rise to its common name.

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Countries

Photo: (c) Shreyas Kuchibhotla, niektoré práva vyhradené (CC BY-NC), uploaded by Shreyas Kuchibhotla

01Classification

Taxonomy & Classification

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Linyphiidae

Genus

Notioscopus

Swamp Lookout Spider belongs to the family Linyphiidae, order Araneae, within the Arachnida class.

02Description

Species Profile

The Swamp Lookout Spider (Notioscopus sarcinatus) is a critically endangered arachnid species with extremely limited distribution and poorly understood ecology. This spider inhabits specialized wetland environments where it constructs distinctive webs in elevated positions among marsh vegetation, giving rise to its common name. The species exhibits unique behavioral adaptations to its aquatic-adjacent habitat, including the ability to detect water level fluctuations and prey movement across water surfaces. Its restricted range makes it particularly vulnerable to environmental changes and human activities. The primary threats to N. sarcinatus include habitat destruction through wetland drainage, urban development, and agricultural expansion. Climate change poses additional risks through altered precipitation patterns and increased frequency of extreme weather events that can disrupt the delicate hydrological balance of its marsh ecosystems. Water pollution from agricultural runoff and urban sources further degrades habitat quality. The species' small population size and limited dispersal ability compound these threats, reducing its resilience to environmental disturbances. Conservation efforts for the Swamp Lookout Spider remain limited due to insufficient baseline data on population size, distribution, and ecological requirements. Current initiatives focus on habitat protection through wetland conservation programs and improved water quality management in known localities. Research priorities include comprehensive population surveys, habitat mapping, and studies of the species' life cycle and ecological needs to inform targeted conservation strategies.

The Swamp Lookout Spider faces severe threats from wetland habitat destruction due to drainage, development, and agricultural conversion. Water pollution and climate-induced changes to marsh hydrology further compromise the specialized aquatic environments this species requires. Its extremely limited range and small population size make it highly vulnerable to any environmental disturbance.

Key Facts

IUCN StatusCritically Endangered (CR)
GroupArachnids
03Habitat

Habitat & Distribution

This species inhabits specialized marsh and wetland environments where it builds webs in elevated positions among emergent vegetation. It requires areas with stable water levels and clean aquatic conditions typical of undisturbed swamp ecosystems.

04Threats

Threats

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IUCN Red List: Critically Endangered

The Swamp Lookout Spider faces severe threats from wetland habitat destruction due to drainage, development, and agricultural conversion. Water pollution and climate-induced changes to marsh hydrology further compromise the specialized aquatic environments this species requires. Its extremely limited range and small population size make it highly vulnerable to any environmental disturbance.

Detailed threat classification data is sourced from IUCN assessments as they become available.

Community

Community Sightings

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07Sources

Sources & Attribution

How to Cite

IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS

GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org

This page: SpeciesRadar (2025). Swamp Lookout Spider (Notioscopus sarcinatus). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/swamp-lookout-spider

Full citation guide & data usage terms