Diplacodes is a genus of dragonflies
in the Libellulidae family. They are commonly known as Perchers. Their
colours range from the totally black body of the African D. lefebvrei,
the lovely pale blue of India's D. trivialis, to the intense red of the
Asian-Australian D. haematodes.
Diplacodes bipunctata (Brauer, 1865),
the Wandering Percher, or Common Percher, Red Percher, is a small size
dragonfly in genus Diplacodes.
The mature male has a body length
32mm, has the red eyes, red face, red thorax and red abdomen. Its wings
are clear. There are the black heart-shaped markings on each segment of
the abdomen. Red or orangey-red flattened abdomen with distinct spots along
the mid-dorsal line of the abdomen and a few smaller spots along the abdomen
sides. Slight yellow bases to the hindwings. Sides of thorax with two black
spots including the metastigma. The immature male colours reddish yellow
which help the dragonfly for camouflage when they were living in the bush.
After they grow up, they will turn red as a mature male. They will go back
to his breeding ground, the creek, to perch and wait for females.
Males similar to D. melanopsis, which
has black eyes, a dark face and three distinct lines of spots running up
the mid-dorsal line and sides of the abdomen. Similar to A. nigrescens
which differs by having pairs of dagger-shaped forward-pointing black marks
on the abdomen. There is another small red dragonfly common in the same
area, Scarlet Percher (D. haematodes), that they do not have markings on
abdomen.
The female has a body length 32mm,
and is sandy yellow with black markings on the abdomen. Brownish-orange
abdomen with distinct spots along the mid-dorsal line. Reddish eyes and
pale face. Distinct thick pale rectangle along mid-dorsal line of thorax
extending down between both sets of wings. Their wings are clear. Females
almost identical to both D. haematodes and D. melanopsis.
The species behaviour is relatively
quick often flying sorties from perch positions on the top of grass stems.
Habitat is grassy edges of any standing water. They are called Perching
Dragonflies, because that is what the male does by spending a considerable
amount of time perched in a favourite spot whilst waiting for the females
to arrive, which they also seem to do as a group. The males then become
most active, not only mating on the wing, but are continually in flight
guiding and protecting the female while she lays her eggs.
Wandering Percher females do not
lay their eggs on aquatic vegetating like most other dragonflies, but hover
with the male just above the water surface, where she quickly dips the
tip of her abdomen to release an egg, then moving a short distance to repeat
the procedure. They mostly place their eggs in shallow water and can be
seen with other couples near the waters edge, or flying parallel to it,
stopping at short intervals to drop another.
Wandering Percher females do not
lay their eggs on aquatic vegetating like most other dragonflies, but hover
with the male just above the water surface, where she quickly dips the
tip of her abdomen to release an egg, then moving a short distance to repeat
the procedure. They mostly place their eggs in shallow water and can be
seen with other couples near the waters edge, or flying parallel to it,
stopping at short intervals to drop another.
It is common and widespread, occurs
throughout Australia, New Zealand, Indonesia and numerous Pacific Islands.
Flight period from October to May.
References:
http://www.brisbaneinsects.com/brisbane_dragons/CommonPercher.htm
http://www.ecology-solutions.com.au/vic_dragonflies/D_bipunctata.htm
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