From the preface:
"For as long as most of us can remember, the name of Ken Spencer has been synonymous with the Agromyzidae. During four decades a stream of papers and books has issued from his pen, many of them comprehensive works that have not simply advanced the work of his predecessors but have completely superseded them and have become the new “standard works”. Such a published oeuvre is a remarkable achievement for any entomologist, but it is the more remarkable in that Ken’s study of Agromyzidae was not begun until early middle age and was, for twenty years, a sparetime hobby. Yet, more than most professional scientists with time and resources in abundance. Ken Spencer has travelled, collected, studied, published, and attended conferences, mixing effortlessly with numerous entomologists and fellow Agromyzid specialists at all levels, no matter what their nationality, and pursuing the study of his chosen group with a single-minded dedication verging on the obsessive. How this was achieved, together with his youthful background as a linguist, his service in military intelligence during the war and after, and his career as an international businessman, is the subject of this absorbing and fascinating book. [...]"