Eurysticta coolawanyah
VU

Eurysticta coolawanyah

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Eurysticta_coolawanyah

Overview

Eurysticta coolawanyah is a damselfly in the family Isostictidae, a group of slender, often delicately coloured insects commonly known as narrow-wings. Like most isostictids, it displays the characteristic elongated abdomen and finely veined, transparent wings typical of the family, with body coloration in the muted blues, browns, and greens that provide effective camouflage against riparian vegetation. This species is endemic to the Kimberley region of northwestern Australia, an area known for its sandstone gorges, seasonal watercourses, and monsoonal climate.

It is closely associated with clear, flowing freshwater habitats such as spring-fed streams and rocky pools within this rugged landscape, where larvae develop in well-oxygenated water before adults emerge to patrol vegetated stream margins in search of prey and mates. The species is currently classified as Vulnerable (VU) on the IUCN Red List, reflecting its restricted geographic range and reliance on specific freshwater habitat conditions that occur only within a limited part of the Kimberley. Population trend data remain unknown, underscoring the need for further field surveys to establish baseline numbers and monitor change over time.

Encouragingly, much of the Kimberley's remote terrain has limited direct human disturbance, and several of the region's freshwater systems fall within or near areas managed for conservation, offering a degree of natural protection for this damselfly's habitat. Continued attention from regional biodiversity surveys and Australian freshwater invertebrate specialists provides a foundation for improving knowledge of this understudied but ecologically distinctive species.

Eurysticta coolawanyah faces pressure primarily from its narrow distribution within Kimberley freshwater systems, where any alteration to stream flow or water quality could disproportionately affect the entire population. Potential threats include disruption of spring-fed water sources from changing rainfall patterns associated with climate variability in northern Australia, as well as localized impacts from cattle grazing and feral ungulate access to riparian zones, which can degrade streambank vegetation and water clarity. Because the species depends on specific clear-water habitat conditions for larval development, even small-scale hydrological changes pose a meaningful risk despite the remoteness of its range.

Threat summary

Habitat

This damselfly inhabits clear, spring-fed streams and rocky freshwater pools within the sandstone gorge country of the Kimberley region in northwestern Australia.

Conservation measures underway

Species recovery

Frequently asked questions

Why is Eurysticta coolawanyah classified as Vulnerable?
Eurysticta coolawanyah 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. Eurysticta coolawanyah faces pressure primarily from its narrow distribution within Kimberley freshwater systems, where any alteration to stream flow or water quality could disproportionately affect the entire population. Potential threats include disruption of spring-fed water sources from changing rainfall patterns associated with climate variability in northern Australia, as well as localized impacts from cattle grazing and feral ungulate access to riparian zones, which can degrade streambank vegetation and water clarity. Because the species depends on specific clear-water habitat conditions for larval development, even small-scale hydrological changes pose a meaningful risk despite the remoteness of its range.
Where does Eurysticta coolawanyah live?
Eurysticta coolawanyah 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 Eurysticta coolawanyah?
The main threats to Eurysticta coolawanyah are 11.1. The full IUCN-classified threat record for this species is detailed on the species page.

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