Thylacine Darner
EN

Thylacine Darner

Acanthaeschna victoria

Declining

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

Overview

This large aeshnid dragonfly is characterized by a robust, elongated body typical of Odonata, with the strong flight capabilities and predatory behaviour common to darners. Adults hunt small flying insects on the wing, using large compound eyes and agile aerial maneuvering, while aquatic larvae (nymphs) are ambush predators within stream systems. As both predator and prey, the species contributes to regulating invertebrate populations and serves as a food source for birds, fish, and other larger predators, making it a useful indicator of freshwater ecosystem health.

Acanthaeschna victoria is found in Australia, where it depends on permanent inland rivers and streams for larval development, with adults also ranging into artificial terrestrial habitats such as modified landscapes near watercourses.

The species faces multiple ongoing pressures. Expansion of housing and urban development degrades and fragments riparian habitat, while conversion of land to annual and perennial non-timber crops reduces available breeding and foraging areas. Altered fire regimes and fire suppression practices affect vegetation structure along waterways, and logging and wood harvesting further disturb riparian corridors that larvae and adults rely upon.

These combined pressures have contributed to a documented decreasing population trend.

Conservation attention for this species is limited, and no large-scale, species-specific interventions have been widely documented. Protection is likely to depend on broader wetland and riparian habitat conservation measures, water quality management, and land-use planning that limits further encroachment on stream systems.

Given continuing habitat loss and fragmentation from multiple concurrent threats, the species' outlook remains concerning. Without targeted habitat protection and monitoring, its Endangered status and declining trend are expected to persist.

The Thylacine Darner is mainly threatened by the loss and clearing of its natural habitat for housing and urban development, as well as land being converted for growing crops. Ongoing bushfires and fire management practices, along with logging and tree removal, further degrade the wetland and forest areas this species depends on. These threats appear to be ongoing and continuing at a steady pace, rather than clearly increasing or decreasing.

Threat summary

Habitat

Artificial - Terrestrial· majorWetlands (inland) - Permanent rivers/streams· major

Frequently asked questions

Why is Thylacine Darner classified as Endangered?
Thylacine Darner 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. The Thylacine Darner is mainly threatened by the loss and clearing of its natural habitat for housing and urban development, as well as land being converted for growing crops. Ongoing bushfires and fire management practices, along with logging and tree removal, further degrade the wetland and forest areas this species depends on. These threats appear to be ongoing and continuing at a steady pace, rather than clearly increasing or decreasing.
Where does Thylacine Darner live?
Thylacine Darner 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 Thylacine Darner?
The main threats to Thylacine Darner are 1.1, 2.1, 5.3, and 7.1. The full IUCN-classified threat record for this species is detailed on the species page.

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