Why insects has antennae!

 Why insects has Antenna and what is use of antennae!

Hi all, have you think before why insects has antennae? And often their antennae move like back and throw. In this blog we just know about what is use of antennae of insects.

Grasshopper. Shutterspeed 1/560s and ISO100 

Why do insect's antennae move often? Insect antennae is one pair, two antenna joint in every species of insect's head. It will not only for vibrations( for communication), main purpose is work like nose for smell odours.

Pumpkin beetle. Shutterspeed 1/450s and ISO100 

Insect antennae has powerful cell for detecting odour, that is called  olfactory sensilla. When insects want to find odour, odour molecules make contact with olfactory sensillum, this is tune to recognize that odour, then electrical signals send to the insect's brain. 

Nymphs of box bug. Shutterspeed 1/250s and ISO. 

This process similar to human but more aggressive than human smell sense. Because insects has pair antennae and they can able to smell in stereo. They can find tiny differences in odour. 

Note: aperture is fixed f1.7. 

Thank you!