Cicada. View of an adult cicada resting on a leaf. The cicada is a green colour to help camouflage it amongst the leaves. Cicadas are best known for their rhythmic mating calls,which fill the air in warm countries. The sound is produced by an oscillating membrane in an abdominal cavity. A semi-rigid,arched membrane (tymbal) is pulled out of shape by specialised muscles to produce a loud "click". The membrane flicks back and forth,producing 120-600 clicks per second. Cicadas spend all but a month of their lives underground as nymphs,some spending around 17 years in this stage. Photographed at La Selva Biological Station,Costa Rica | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Ervin, William |
Bildgröße: | 2480 px × 3615 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |