Tools: Weeding Shovels:
Brett's Angled End, back
Ellura Sanctuary
Wings: Fly Halteres:
Big Red
Tau EmeraldWings:
Dragonfly Wing Patches:

 Tau Emerald (Hemicordulia tau)

Retired Professor of Anatomy, Ian Gibbins, has kindly shared his thoughts with us to help people learn:

Interesting they have light patches on the leading edge of their wing tips, rather than the more common black ones. There was a recent paper that showed that the extra mass in the black patches changes the flexibility of that part of the wing and so influences (ie improves) the aerodynamics of the wing. Presumably the light pigment works just as well...

Ian Gibbins

On our Facebook group, Friends of Ellura, Heather asked what the name of the wing patches are.
Kerry kindly filled us in; Pterostigma.
Ian highlighted the greek origins of this phrase being Ptero = wing & stigma = mark

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