Walckenaer and Paul Gervais commenced Histoire naturelle des insectes. 1837 Oswald Heer published Die Kafer der SchweizSecond edition of John Curtis "A guide to the arrangement of British insects being a catalogue of all the named species hitherto discovered in Great Britain and Ireland " published. The list contains 1500 generic and 15,000 specific names. Carl Gustaf Mannerheim (naturalist) Mémoire sur quelques genres et espèces de Carabiques published. Achille Rémy Percheron publishes Bibliographie entomologique listing more than 5 000 authors and 500 anonymous contributions. 1838 Johan Wilhelm Zetterstedt Insecta Lapponica Descripta. Leipzig: Voss 1145pp (1838–1842) commences publication. Benjamin Dann Walsh left England for the United States of America . He was a pioneer of applied entomology. 1839 John Obadiah Westwood. First part of An introduction to the modern classification of insects. ( 1839–1840) published. John Forbes Royle Illustrations of the Botany and Other Branches of the Natural History of the Himalayan Mountains, and of the Flora of Cashmere published. This work resembles 18th century works in its sumptuous illustration. Meyers Konversations-Lexikon commenced. Entomology was a favourite topic. 1839 Étienne Mulsant. Histoire naturelle des Coléoptères de France.13 pts. Paris and Lyon,1839-1863 published. James Francis Stephens Manual of British Coleoptera or Beetles This work contains diagnoses of 3462 species and remained the standard work until the appearance of the Handbook of the Coleoptera by H.E. Cox was published in 1875. An instance of the longevity of some taxonomic works. Alexander Henry Haliday, Hymenopterorum Synopsis and Methodum Fallenii ut plurimum accomodata (Belfast) 8 4pg. s.titulo. This work on classification was privately printed. Very few copies survive. The same is true of many important works of other authors. Edward Newman founded The Entomologist (an insect magazine) at London. Giuseppe Gené De quibusdam insectis Sardiniae novis aut minus cognitis. Fascicle 2. Mem. R. Accad. Sci. Torino (2)1: 43-84 1840 Jean Baptiste Alphonse Dechauffour de Boisduval Genera et index methodicus Europaeorum lepidopterorum. published in Paris. Theodor Becker born. Jan Dzierżon designed a movable-frame beehive, the first of many apicultural advances he initiated. 1841 William Wilson Saunders becomes president of the Entomological Society of London. 1842 Jean Victoire Audouin publishes Histoire des insectes nuisibles à la vigne et particulièrement de la Pyrale. Jules Pierre Rambur publishes Histoire naturelle des insectes. 1843 Johann Heinrich Kaltenbach. Published Monographie der familien der Pflanzenhauseat Aachen. A monograph on Thysanoptera. Henry Noel Humphreys, an illustrator and John Obadiah Westwood British Moths and