PLEASE help-insect breathing info.

[HeinzeDJAK]

I could be wrong, but remember that insects use spiracles to breathe.  There
are nine pairs on either side, and usually can be spotted easily.  As I
understand, they are long cone shaped tunnels that come to a very tiny point,
at which the difusion of Oxygen and so forth occurs.   With this understanding,
I can't see a insect breathing in deeper or less deep, or how it could have a
rate, but I could be wrong.

Hope this helps,
Dar