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Gnaraloo Worm-lizard

Aprasia litorea

Declining

Overview

Aprasia litorea is a small, legless lizard belonging to the family Pygopodidae, a group of reptiles that superficially resemble snakes but are more closely related to geckos. Like other members of its genus, it has a slender, worm-like body, reduced or absent limbs, and a small head adapted for a burrowing lifestyle. It spends most of its life underground or beneath surface debris, feeding primarily on the eggs and larvae of ants and termites.

Its fossorial habits make it rarely seen, and it likely plays a role in soil turnover and invertebrate population regulation within its ecosystem.

This species is endemic to Western Australia, restricted to a narrow coastal strip near Gnaraloo Station on the state's central-west coast. It inhabits marine coastal and supratidal habitats, typically associated with sandy or loamy soils supporting sparse vegetation near the shoreline, where it shelters under surface debris such as leaf litter, rocks, or timber.

The species is classified as Endangered, with a decreasing population trend. Its restricted range makes it particularly vulnerable to habitat degradation from livestock farming and ranching, which compacts soil, removes vegetation cover, and disturbs the surface debris the species depends on for shelter. Invasive species also pose an ongoing threat, potentially through predation, competition, or further habitat alteration.

Conservation attention has focused on monitoring populations within its limited known range and assessing habitat condition in areas affected by grazing. Given the narrow geographic distribution, protection of remaining habitat patches is considered important for the species' persistence. The outlook remains uncertain, with continued habitat pressure from agricultural land use and invasive species suggesting further decline unless mitigating measures are implemented.

Gnaraloo Worm-lizard faces ongoing pressure from grazing livestock, which can trample and degrade the sandy soils and vegetation it depends on for shelter and hunting. It is also threatened by invasive species, which may prey on it, compete with it, or damage its habitat. Both threats are currently classed as ongoing, suggesting a stable rather than rapidly worsening situation.

Threat summary

Habitat

Marine coastal/supratidal· major

Conservation measures underway

Species recovery

Frequently asked questions

Why is Gnaraloo Worm-lizard classified as Endangered?
Gnaraloo Worm-lizard is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Gnaraloo Worm-lizard faces ongoing pressure from grazing livestock, which can trample and degrade the sandy soils and vegetation it depends on for shelter and hunting. It is also threatened by invasive species, which may prey on it, compete with it, or damage its habitat. Both threats are currently classed as ongoing, suggesting a stable rather than rapidly worsening situation.
Where does Gnaraloo Worm-lizard live?
Gnaraloo Worm-lizard occurs in Australia. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Gnaraloo Worm-lizard?
The main threats to Gnaraloo Worm-lizard are 2.3, and 8.1. The full IUCN-classified threat record for this species is detailed on the species page.

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