- Die Käfer des Deutschen Reiches - "Les coléoptères de l'empire allemand" (1908) Band 4 Edmund Reitter :
http://caliban.mpiz-koeln.mpg.de/~stueb ... index.html - The elements of insect anatomy; an outline for the use of students in entomological laboratories (1910) Comstock, John Henry, 1849-1931
http://www.archive.org/details/elementsofinsect00coms - Souvenirs entomologiques ... Études sur l'instinct et les murs des insectes .. ([1879-1907]) Fabre, Jean-Henri, 1823-1915
http://www.archive.org/details/souvenirsentomol07fabr - The anatomy of the mouth-parts and of the sucking apparatus of some Diptera (1881) Dimmock, George, 1852-
http://www.archive.org/details/anatomyofmouthpa00dimm - The young collector's handbook of ants, bees, dragon-flies, earwigs, crickets, and flies (Hymenoptera, neuroptera, orthoptera, hemiptera, diptera) (1890) Bath, W. Harcourt
http://www.archive.org/details/youngcol ... 00bathrich