Please note, this series is no longer available as separate volumes, but only as 5-volume set. This excludes the supplementary volume published in 2013 though.
Volume 1 contains the Enicocephalomorpha, Dipsocoromorpha, Nepomorpha, Gerromorpha, and Leptopodomorpha, and covers approximately 500 species.
Volume 2 contains the first half of the Cimicomorpha, covering the families Joppeicidae, Tingidae, Microphysidae, Nabidae, Anthocoridae, Cimicidae, Polyctenidae, Pachynomidae, and Reduviidae. This volume covers approximately 1200 species. Volume 3 contains the second half of the Cimicomorpha, covering the large family Miridae, and contains approximately 2500 species.
Volume 4 contains the first half of the Pentatomorpha, covering the families Aradidae, Lygaeidae, Piesmatidae, Malcidae, Berytidae; Colobathristidae, Largidae, and Pyrrhocoridae. This volume covers approximately 1300 species. The fifth volume, finally, covers the second half of the Pentatomorpha, and covers the families Stenocephalidae, Rhopalidae, Alydidae, Urostylididae, Thaumastellidae, Parastrachiidae, Cydnidae, Thyreocoridae, Plataspidae, Acanthosomatidae, Tessaratomidae, Scutelleridae, Dinidoridae, and Pentatomidae. This volume covers approximately 2100 species