Nomina Insecta Nearctica was originally published in a series of 4 rather large volumes. Each of the volumes have now been broken down into separate volumes, making downloading easier and faster and also allows you to take only those particular segments of the checklist of interest to you. Additionally, superfluous pages (blanks and title pages) have been eliminated.

Volume 1 - Coleoptera, Strepsiptera
Volume 2 - Hymenoptera, Mecoptera, Megaloptera, Neuroptera, Raphidioptera, Trichoptera
Volume 3 - Diptera, Lepidoptera, Siphonaptera
Volume 4 - The remaining orders

NOTE: This updates and replaces original entry (2004), and added for referencing purposes,