1 Tau Emerald at Evatt, ACT
Identification history
| Hemicordulia tau | 11 Apr 2020 | roymcd | ||
| Hemicordulia tau | 11 Apr 2020 | roymcd | ||
| Unidentified | 10 Apr 2020 | TimL |
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User's notes
The dragonfly was sighted resting after a recent cold night. The fourth and fifth images show what I understand to be part of the dragonfly’s respiratory system, an anterior thoracic spiracle valve behind the dragonfly’s head. It was beating open and closed every two seconds, serving the head and the wing muscles. The valve is the circular yellow object with a fold across it, located behind the head and in the centre of each image. Toggling between the two images shows the valve beat closed/open. It is closed in the fourth image and open in the fifth image.
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Nearby sightings
Location information
- Coordinates 149.063992-35.213357
- Altitude 598.4m
- Places Evatt, ACT
Sighting information
- 1 Abundance
- 6 Apr 2020 09:58 AM Recorded on
- TimL Recorded by
Additional information
- 50mm or larger Animal size
Species information
- Hemicordulia tau Scientific name
- Tau Emerald Common name
- Not Sensitive
- Local native
- Non-invasive or negligible
- Up to 1364m Recorded at altitude
- Machine learning
- External link More information
Record quality
- Images or audio
- More than one media file
- Verified by an expert moderator
- Nearby sighting(s) of same species
- GPS evidence of location
- Description
- Additional attributes
