During the day, these nocturnal insects don't come out until evening.
So why don't these insects rush to the moon at night because of phototaxis? Because the phototaxis of insects is the reaction that insects tend to the light source, but insects don't fly directly to the light source, but fly around the light source at a certain angle. Because the moon is far from the earth, the flying angle between insects and the moon is constant, so they will not fly to the moon.
Especially moths to the fire. We thought that insects like chasing light, but this has been a misunderstanding for thousands of years.
In the dark, moths can't see clearly around them. How can they fly quickly and economically without going the wrong way without finding a suitable reference?
In fact, for hundreds of millions of years, insects that move at night like moths have navigated by moonlight and starlight. Because it is a very far light source, when the light reaches the ground, it can be regarded as parallel light and can be used as a reference for straight flight. As shown in the figure below, note that moths can fly in a straight line as long as they fly at a fixed angle, and direct flight is the most labor-saving. Adjust the angle slightly, and you can fly directly to another target.