This page contains information and pictures about Yellow Emperor Dragonflies that we found in the Brisbane area, Queensland, Australia.
They are also known as Yellow Emperors. In New Zealand they are known as Baron
- Male, body length 65mm
This dragonfly is a very large dragonfly. They never stop flying over the pond.
They are common in Brisbane.
During a sunny summer day, you will see the
dragonfly flying over every piece of large flash waters in Brisbane. It is usually the largest dragonfly on
the water and will chase away any flying object on its path. The dragonfly
is pale yellow in colour with grey pattern on the body. The costa, or the
front edges of its wings are pale yellow.
- The Australian Emperor Dragonfly spend most of the time flying, defending its
territory and hunting for
prey, seldom rest on a sunny day. In flight it appear yellowish. At the end of its
abdomen there is the yellow spot as the 'tail light'. The males
aggressively defend large territories over the water.. Its territory can be as large as 50
meters on a section of slow running water. If there is the intruder, it will
always be driven away by a series of noisy air battles. The dragonfly
usually has its patrol flight one meter about the water in quite a routine
path within its territory.
- The pictures above show the dragonfly rested on grasses and trees during late
afternoon. The dragonfly rested there overnight until next morning.
- The first picture above shows the Australian Emperor pair laying eggs in the plant under the water, still in
tandem position. Sometimes we saw the female dragonfly laying
eggs alone. The female resembles male. The breeding sites are ponds and slow
running water with thick vegetations. More information about
reproduction please visit this page.
- The moulting skin left after the
larva climbed up from the water and emerged
as an adult dragonfly, length 40mm
- The Australian Emperor Dragonfly has two pair of wings which are about equal size. They are clean in colour. The construction is typical example of
dragonfly's and damselfly's
wings. There are only five main vein stems. The black pterostigma
is carried near the wing tip. The main veins and the crossveins form the
wing venation pattern. The venation patterns are different in different
species. The venation pattern is useful for species identification.
- 1. The Australian Dragonflies - CSIRO, Watson, Theisinger &
- 2. A
Field Guide to Dragonflies of South East Queensland - Ric Nattrass,
- 3. The
Complete Field Guide to Dragonflies of Australia - CSIRO, GŁnther
Theischinger and John Hawking, 2006, p152.
- 4. Hemianax papuensis - Australian Emperor - Deniss Reeves,
Austrolestes-Newsletter of Australian Dragonfly Society, #8, 2003.
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