Insect · GBIF taxon 1421222
Siebold's Giant Dragonfly
Anotogaster sieboldiiAlso known as Golden-ringed Dragonfly, Jumbo Dragonfly, Oniyanma
As the largest dragonfly in East Asia, Siebold's giant dragonfly commands forest streams with fierce aerial dominance and striking black-and-yellow tiger stripes. Males tirelessly patrol fixed flight corridors along clear mountain rivers, hunting flying insects as large as cicadas and wasps in mid-air. Aquatic nymphs spend up to five years submerged in clean stream gravel before emerging for a brief, high-energy adult summer.
Aerial PredatorLarge InsectFreshwater
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & prey
- Mosquitoes
- Flies
- Wasps
Predators
- Birds
- Frogs
- Spiders
ThreatsStream pollution, habitat destruction, water flow modification
HabitatsClean mountain streams, forest rivers, oxygen-rich freshwater channels
Life span3–5 years as nymph; 1–3 months as adult
Size / weightNot available
Classification
- FamilyCordulegastridae
- SpeciesAnotogaster sieboldii
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
Responsible observation
- Stream Patrols: Station yourself along sunny clearings near mountain streams where males maintain set flight paths.
- Resting Perches: Look for perched individuals hanging vertically from overhanging branches during warmer hours.
Competitor (c) César Alonso, some rights reserved (CC BY) · cc-by
Close Relative Charles J. Sharp / CC BY-SA 4.0 · cc-by-sa
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