As a harbinger of warmer days to come, it’s hard to go past the cicada. It might be due to the combination of a dry winter and a warm start to spring but in recent weeks there have been discarded cicada shells all over the place. Fence posts, brick walls, tree trunks – all are seemingly dotted with husks, cast aside as cicadas move on to their final phase of life. During the day the air often thrums with their calls. Usually camouflaged by leaves, they are hard to spot unless being chased around the neighbourhood by hungry birds.
Cicadas were captured as temporary trophies when I was a kid, with a league ladder of varieties according to scarcity. The common Greengrocer wasn’t given much weighting; Yellow Mondays were a bit harder to find, Black Prince cicadas were highly sought, along with the noisy Double Drummer. The cicadas would be brought to school in ice cream containers with holes punched into the lids, to be admired and swapped before the cicadas were released.
There are Miller or Floury Baker cicadas, covered in fine, silvery hairs. I haven’t seen a Cherrynose cicada, but they are meant to be more common on the coast. There are Red-eyes along with smaller varieties such as Fairy, Maiden and Midget.
It is mainly the male cicada who sings by flexing their tymbals which are drum-like organs found in their abdomens. They drink and eat using their beak or rostrum, and begin life as an egg embedded in a tree limb. When the egg hatches, the ant-like form falls to the ground and digs until it finds roots to feed on. Cicadas can remain underground for anywhere up to 17 years, according to the species. It is an active life spent feeding and tunnelling.
As nymphs, they return above ground and climb the nearest tree to shed their exoskeleton. Their wings inflate and their bodies harden. They search for a mate with males singing to attract females, and the cycle begins again. As an adult they have a short life, usually only a few weeks.
There are over 3,300 varieties around the world, and a couple of unusual Australian cicadas are the Blue Moon and Bagpipe Cicada.
There is a lovely poem about cicadas by David Campbell here.
Do you have cicadas in your backyard?
Main source of information on cicadas: Cicada Mania web page. It is brilliant – hover over a link and the mouse arrow turns into a cicada!
[Photo: Greengrocer cicada]