The Southern Hawker Dragonfly, one of the large "hawkers," has a characteristic "V" shape in the top segment of its abdomen above a greeny-blue, sideways "B" shape.
While the female Southern Hawker is greener (less blue) than the male, the photo above right is of a male camouflaged in green: the male has a slim waist and anal claspers.
This female has red thighs
She has a fatter "waist"
Ladies like flowers
A Southern Hawker Dragonfly newly-emerged from the exo-skeleton (exuvia) of its nymph (larval) phase
Initially wings are held together like a damselfly
Then wings are spread to dry
Head, thorax and waist close-up, with full and with blurred backgrounds.
The "eyes" on the thorax are another distinguishing feature.
Southern Hawker nymph, a water-dwelling larva feeding on pond insects for its 3 years of aquatic life
The nymph climbs out of the water and the exoskeleton is left once the adult dragonfly has emerged and flown
The nymph mouthparts
The redundant exoskeleton of the dragonfly nymph is variously referred to as exuvium/exuvia (neuter singular/plural) and exuvia/exuviae (feminine). The latter seems more usual.