Ans: Here we can talk about mating which can only occur in an adult stage. So you are never going to see the larvae or worms mating. Typically the adults don’t have a lot of other functions they mate, they lay eggs and they die. Very often you will see a very short life span for the adult stage. Males are not always required in a lot of insect species, we don’t even see males or they are very uncommon they might not play much of a role at all in the propagation of the species. We talk about generations of insects, a generation is from an egg to an adult. So the length of time it takes to get from one to another as a generation, so there will be 4 generations in a year. This means you could have eggs and then adults lay eggs again and then you get another generation and so on. Another term that you will hear when we talk about insect development is overwintering. Obviously this has to survive through the winter and they don’t always do it at a certain stage. The cycle doesn’t begin with each year as an egg it is automatic in the spring and then you have larvae, a pupae then an adult. It can vary depending upon the species, the grape leaf skeleton is over the winters as pupae. It emerges in the springtime as an adult moth and there are quite a few insects that will overwinter in that stage. You can imagine a pupa is very resistant, a little bit tougher you can say not quite so delicate as some of those other stages so it would overwinter as the pupal stage and emerge as an adult in the springtime laying eggs then that generation starts. So sometimes you have a final generation kind of stops at the end of a season and then continues into the next year.