On Dimorphism In The Hymenopterous Genus Cynips is a scientific book written by Benjamin Dann Walsh and published in 1864. The book focuses on the genus Cynips, which is a group of parasitic wasps that are known for their ability to induce galls on plants. Walsh's research in this book centers around the phenomenon of dimorphism, which refers to the existence of two distinct forms of individuals within a species. Walsh's observations and experiments...