Fritz Rühl, also Roule, (1836 – 1893 in Zurich) was a Swiss entomologist. He was a professional insect collector and insect dealer who worked with the Berlin natural history dealers and publishers Alexander Heyne and Otto Staudinger. His Hymenoptera collections were sold to Paolo Magretti and are conserved in the Museo Civico di Storia Naturale di Genova. He supplied collections of Lepidoptera and Coleoptera from around the world to the Istituto Sperimentale per la Zoologia Agraria in Florence.
Rühl edited Die palaearktischen Grossschmetterlinge und ihre Naturgeschichte. Band 1. Leipzig, Ernst Heyne (1892-1895), a monograph with the Berlin insect dealer Max Bartel (1879-1914) and wrote scientific papers on Coleoptera.
Christian Rudolph Wilhelm Wiedemann was a German physician, historian, naturalist and entomologist. He is best known for his studies of world Diptera, but he also studied Hymenoptera and Coleoptera, although far less expertly.
Maximilian Spinola was an Italian entomologist.
Dr Wilhelm Ferdinand Erichson was a trained medical doctor and a German entomologist.
Johann Christoph Friedrich Klug, was a German entomologist. He described the butterflies and some other insects of Upper Egypt and Arabia in Christian Gottfried Ehrenberg and Wilhelm Friedrich Hemprich's Symbolæ Physicæ. He was professor of medicine and entomology in the University of Berlin where he curated the insect collections from 1810 to 1856. At the same time he directed the Botanic Garden in Berlin which contains his collections. Klug worked mainly on Hymenoptera and Coleoptera. The plant genus Klugia was named in his honour as well as the butterflies Geitoneura klugii and Heliophisma klugii.
Frederick William Hope was an English clergyman, naturalist, collector, and entomologist, who founded a professorship at the University of Oxford to which he gave his entire collections of insects in 1849. He described numerous species and was a founder of the Entomological Society of London in 1833 along with John Obadiah Westwood.
Edmund Reitter was an Austrian entomologist, writer and a collector.
Giuseppe De Cristoforis was an Italian naturalist and collector.
Hermann Rudolph Schaum was a professor in Berlin and an entomologist. He specialised in Coleoptera.
Carlo Emery was an Italian entomologist. He is remembered for Emery's rule, which states that insect social parasites are often closely related to their hosts.
Otto Bang-Haas was a German entomologist and insect dealer. His collection of microlepidoptera is in the National Museum of Denmark and of Coleoptera in the Natural History Museum of Giacomo Doria, Genoa. He followed his father Andreas Bang-Haas into the business.
Erich Martin Hering was a German entomologist who specialised in leafmining insects, He was a curator in the Museum für Naturkunde in Berlin, where his collections of Lepidoptera, Coleoptera, Hymenoptera, Diptera are conserved. His collections of Agromyzidae are shared between MfN and the Agricultural School at Portici now part of the University of Naples Federico II.
John Henry Leech was an English entomologist who specialised in Lepidoptera and Coleoptera.
Ernst Heyne (1833-1905) was a German entomologist who specialised in Lepidoptera. He was the father of Alexander Heyne and Martin Heyne. The Heyne family were natural history dealers, booksellers and publishers in Berlin and London. Ernst Heyne was a friend and business associate of insect dealers Otto Staudinger and Andreas Bang-Haas.
Alexander Heyne (1 July 1869, Leipzig – 1927, Berlin) was a German entomologist who specialised in Lepidoptera. He was the son of Ernst H. Heyne (1833-1905) also an entomologist as was Martin Heyne, Alexander's brother. The Heyne family were natural history dealers, booksellers, and publishers in Berlin and London. He contributed to Die palaearktischen Grossschmetterlinge und ihre Naturgeschichte. Band 1. Leipzig, Ernst Heyne (1892-1895) a monograph on butterflies edited by Fritz Rühl and the Berlin insect dealer Max Bartel (1879-1914).
Karl Rost was a German entomologist and insect dealer. From 1886 Rost was an insect dealer (Insekten-Händler) and professional insect collector in Berlin. He collected insects later offered for sale in Spain and Greece. In 1899 he went on an expedition to Siberia and in 1900 -1901 collected in the Caucasus. In 1903 he went to Japan to collect insects for the Swiss collector George Meyer-Darcis after two years in North-West India. Rost described many new species from these regions. Parts of his personal collection are in the Museum für Naturkunde in Berlin and other parts are in the Zoologisch Museum Amsterdam. The rest were privately sold, many to the dealership Staudinger - Bang-Haas.
Richard Haensch was a German entomologist and insect dealer in Berlin.
Max Bartel was a German entomologist.
Friedrich Otto Gustav Quedenfeldt was a German entomologist who specialised in Coleoptera.
Stefano Ludovico Straneo was an Italian entomologist, teacher, academic administrator and author.