There's the gena, the frons, the clypeus, and lots more. If you really dive into insect identification, you'll become familiar with these names, for the same parts appear again and again on many insect species, in many configurations, with many modifications, and their particular sizes and shapes will help you identify your species. Sometimes the parts will look radically different, but you'll know what they are because of their position. Sometimes the parts will be fused with other parts. And sometimes the parts will be absent, or replaced by something else entirely.
Insect eyes come in two types, simple and compound .
Simple eyes, also called ocelli , are like tiny, round windows, while compound eyes appear to be made of dozens, or hundreds, of massed-together simple eyes. Between the red compound eyes you can see a triangle of three simple eyes. Antennae come in a bewildering variety of shapes and sizes, from mere stubs, to very large, colorful, feathery ones on some moths. One detail important for identification is that the number of antenna segments is often constant within a group. Insect mouth parts are usually adapted for either chewing or sucking .