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- The family Hemicorduliidae is newly separated from the family
Corduliidae.
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 - Newly emerged Emerald
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- Members in this family are medium to large size, which generally have metallic
green, black or yellow body. They have emerald eyes when matured, but often
brown in immature stage. When perched, they hang suspended
vertically.
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  - Larval exuviaes length 25mm
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- Emerald
Dragonflies are strong flyer and spend most of the time flying in air during
a sunny day.
- Australian Emerald
 - Hemicordulia australiae, female, male, body length 50mm
- The Australian Emerald
Dragonflies are strong flyer and spend most of the time flying in air. They are long and slender, with black pattern on
yellow colour. The black patterns are shiny blue green under the sun.
Their eyes and mouth occupy almost all
their head with bright green in colour. More
information please click here.
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Fat-bellied Emerald, Clubbed
Emerald, Broad-tailed Emerald
  - Hemicordulia continentalis,
female, male, body length
40mm,
- The Clubbed Emerald Dragonflies are medium in size, body length about 40mm. When we took those
pictures, we through they were Australian Emerald, another Emerald dragonfly species
which is common in Brisbane. Fat-bellied Emeralds can be
distinguished from other Emerald dragonfly species by the male's
strongly club-shaped abdomen. More information and pictures please click here.
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- Tau, Emerald, T-mark Emerald
  - Hemicordulia tau, body length 50mm
- The dragonfly's body is yellow in colour with black pattern. They look very similar to another Emerald species Australian
Emerald. They can usually be found in the same place. Because both of them
never rest, it is difficult to distinguish between them. The second
picture shows the close look of the dragonfly's face. Notice that when look
at its face from its front, the is the inverse black 'T' mark on its 'nose'.
This is why they are call T-Mark Emerald. More information please click here.
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- Reference:
- 1. The Australian Dragonflies - CSIRO, Watson, Theisinger & Abbey,1991,
p215.
- 2. A Field Guide to Dragonflies of South East Queensland - Ric
Nattrass, 2006, p73.
- 3. The Complete Field Guide to Dragonflies of Australia - CSIRO, Günther Theischinger and John Hawking, 2006,
p244.
- 4. HEMICORDULIIDAE - Australian Biological Resources Study, Department of the Environment and Water Resources, 2007.
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