Casa Ed. di Giuseppe Cesari, published. This was an important contribution to the literature on sericulture. 1931 Georg Hermann Alexander Ochs publishes Über die Gyriniden-Ausbeute der Deutschen Limnologischen Sunda-Expedition mit einer Übersicht über die Gyriniden-Fauna Javas und Larvenbeschreibungen. Shonen Matsumura 6,000 illustrated Insects of Japan-Empire. 1932 A Practical Handbook of British Beetles by Norman H. Joy published by Witherby. Alfred Balachowsky Étude biologique des coccides du bassin occidental de la Méditerranée published in Paris by Lechevalier and Fils. 1934 René Malaise invents the Malaise trap. Vincent Brian Wigglesworth, the "Father" of Insect Physiology, writes the first book on insect physiology, The Principles of Insect Physiology. Antoni Władysław Jakubski Czerwiec polski "Polish cochineal". Monograph on the Polish cochineal. 1935 Gerhard Schrader discovers the powerful insecticides called organophosphates Walter Rothschild gives his insect collection, one of the world's largest collections of Lepidoptera, to the Natural History Museum. 1936 The Natural History Museum, London acquires the James John Joicey collection of Lepidoptera. 1938 Lucien Chopard La biologie des orthoptères (Paul Lechevalier, Paris). Ângelo Moreira da Costa Lima commenced Insetos do Brasil, v. 1-11. Completed 1960. 1940 Vladimir Nabokov begins organizing the butterfly collection of the Museum of Comparative Zoology at Harvard University. Ruggero Verity commenced Farfalle, in English Butterflies, of Italia (five volumes, 1940–1953). René Jeannel Faune cavernicole de la France, in English The Fauna of the Caves of France, published. 1941 Zoltán Szilády A magyar birodalom legyeinek szinopszisa. VI. Talpaslegyek, Clythidae (Platypezidae); VIII. Lauxaniidae [Synopsis of the flies of the Hungarian empire]. Adolf Horion Faunistik der Mitteleuropäischen Käfer commenced. Completed 1974. 1942 Woodhouse, L. G. O. & George Morrison Reid Henry. The Butterfly Fauna of Ceylon. Government Record Office, Colombo 1943 André Badonnel Faune de France. Psocoptères. Paris. Paul Lechevalier 1943. Leopold Fulmek Wirtsindex der Aleyrodiden- und Cocciden- Parasiten Entomologische Beihefte 10: 1–100. 1944 Enrica Calabresi commits suicide in Florence. 1945 Edmund Brisco Ford Butterflies published, seminal introduction to the study of butterflies and their genetics. Cynthia Longfield The Odonata of South Angola. Arquivos do Museu Bocage, 16, Lisboa. 1946 Institut National de la Recherche Agronomique founded. 1947 Carlo Alonza became director of the Muséum de Gênes. 1949 Pierre-Paul Grassé ed. Traité de Zoologie Tome IX. Insectes. Paris, 1949. 1118 p. 1950 Maynard Jack Ramsay becomes Port Entomologist on Staten Island. Mahadeva Subramania Mani founded the School of Entomology at Agra, India. 1951 Work on sterile insect technique begun by American entomologists