The main light is overhead the subject, with a small softbox attached
This ensures even lighting over the tabletop subject. The other light
is placed behind and just below the subject so it's out of shot and is
fitted with a coloured gel of my choice. The backdrop is black seamless
paper. The black picks up the color of the gel.
The light power should be high enough to give you a fast shutter speed.
Bugs and animals move quickly so you want to make sure you catch them
with a fast shutter to ensure a sharp picture.
Both lights are about the same power. Adjusting the background light
higher gives a bold, dynamic, colorful background. Lowering the power
give a gradient fall-off effect for a more subtle effect. Turn the back
light off and the background will be black.
The key is to take as many shots as your camera's memory card can handle.
Critters move fast and you don't know when they are going to do something
funny or be in that perfect position.