It is called Insect Physiology and Biochemistry by James L Nation. As usual, when I borrow a book from the library, when I leaf through and see what's inside I just wish I owned it. There is so much fascinating information in here that I honestly feel excited when I look through it.
It consists of a series of short chapters on different topics with many diagrams and pages of references at the end of each. The effect is rather like anthology of short stories and it is fun dipping into each one. The first one talks about programmed cell death and a gene called reaper which 'plays a major role in the control of apoptosis in drosophila' which strikes me as witty, and then, to my great delight, there are photographs of imaginal discs. It's clearly written, and easily understandable even to a layperson like me. I think I am going to learn a lot this Easter weekend.