He was the father of the noted zoologist and taxonomist Guy Dollman. Pekka T. Lehtinen (born 1934) is a Finnish arachnologist and taxonomist. The species is named for the renowned nudibranch taxonomist Dr. Richard C. Willan. Setting the circumscription of a taxon is done by a taxonomist in a publication. It was first described by English taxonomist John Sims in Curtis's Botanical Magazine in 1802. The composition of a genus is determined by a taxonomist. A taxonomist decides whether to recognize a subspecies. The specific name or epithet, "copei", is in honor of renowned taxonomist Edward Drinker Cope. The species was first described by the British taxonomist John Edward Gray in 1846. John Lindley (1830, 1846) was the other important British taxonomist of the early 19th century. The Neuropterida are often lumped or split on the whims of the taxonomist. He is remembered, at least in malacology, as a taxonomist of considerable stature. Depending on the taxonomist, between 19 and 40 species of plum exist. As a taxonomist, he specialised in dipterans (ordinary flies and mosquitoes).