TY - JOUR AU1 - James, Maurice, T. AB - Abstract It is a well established fact that the parasitic way of life has developed independently many times among the Insecta. Quite obviously, this development has taken place in different ways and has progressed in different directions. Consequently, parasitism of one type or another occurs throughout a wide range of insect orders, particularly, but by no means exclusively, the holometabolous ones. It sometimes involves adaptations to this way of life on the part of the adult, sometimes on that of the immature stages; it may lead to utilization of the host in any stage of development, including its food supply. Consequently, parasitism assumes a variety of forms: ecto- or endo-, obligatory or facultative, social or non-social; it may take a form that is difficult to classify, so that in many cases it is a matter of opinion as to whether we should use the term “parasite” rather than “predator”, or give some other designation to the dependent species or individuals. This content is only available as a PDF. Author notes 1 Scientific paper 3347, College of Agriculture, Washington State University. Work was conducted under Project 9043. © 1969 Entomological Society of America TI - A Study in the Origin of Parasitism JF - American Entomologist DO - 10.1093/besa/15.3.251 DA - 1969-09-01 UR - https://www.deepdyve.com/lp/oxford-university-press/a-study-in-the-origin-of-parasitism-kSkGe0RngI SP - 251 EP - 253 VL - 15 IS - 3 DP - DeepDyve ER -