CR

Sympetrum evanescens

Unknown

Overview

Sympetrum evanescens is a small dragonfly in the family Libellulidae, part of the widespread genus of meadowhawk and darter dragonflies known for their slender bodies and often reddish or amber coloration in mature males, with females and immatures typically showing more muted yellow-brown tones. This species is associated with freshwater wetland systems, where adults hunt small flying insects and perch conspicuously on vegetation near water, while larvae develop as aquatic nymphs in shallow, often temporary or seasonally flooded pools, ponds, and marshland margins that provide the specific hydrological conditions this species requires for breeding. Sympetrum evanescens is classified as Critically Endangered (CR) by the IUCN, reflecting severe and ongoing pressure on the wetland habitats it depends upon.

The primary driver of decline is the drainage, conversion, and degradation of shallow wetland and marsh habitats for agriculture and development, compounded by altered hydrology from water management practices that reduce the seasonal flooding cycles many Sympetrum species rely on for successful larval development. Population trend data remain unknown, a common challenge for range-restricted odonates that receive limited monitoring compared to better-studied vertebrate taxa, underscoring the urgent need for dedicated field surveys to establish baseline population figures and track change over time. On a more encouraging note, growing regional interest in wetland conservation and freshwater invertebrate monitoring has begun to draw attention to lesser-known dragonfly species like this one, with habitat protection initiatives targeting shallow wetland ecosystems offering incidental benefit to its remaining populations.

Continued taxonomic and ecological research, alongside expanded wetland protection efforts, will be critical to clarifying this species' conservation needs and preventing further decline.

Sympetrum evanescens faces severe population decline primarily due to wetland habitat destruction and degradation across its limited range. Agricultural intensification and urban development have eliminated many of the shallow, vegetated ponds and marshes essential for larval development. Water pollution from agricultural runoff and climate-induced changes to precipitation patterns further threaten the remaining suitable breeding sites.

Threat summary

Habitat

This dragonfly species inhabits shallow, vegetated freshwater wetlands including ponds, marshes, and slow-moving streams with abundant emergent vegetation. The larvae require clean, well-oxygenated water with suitable substrate for development, while adults hunt for prey in adjacent grasslands and open areas.

Forest· majorForest - Subtropical/tropical moist montane· majorWetlands (inland) - Permanent freshwater lakes· major

Conservation measures underway

Species recovery

Frequently asked questions

Why is Sympetrum evanescens classified as Critically Endangered?
Sympetrum evanescens is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Sympetrum evanescens faces severe population decline primarily due to wetland habitat destruction and degradation across its limited range. Agricultural intensification and urban development have eliminated many of the shallow, vegetated ponds and marshes essential for larval development. Water pollution from agricultural runoff and climate-induced changes to precipitation patterns further threaten the remaining suitable breeding sites.
Where does Sympetrum evanescens live?
Sympetrum evanescens occurs in Venezuela. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Sympetrum evanescens?
The main threats to Sympetrum evanescens 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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