This work would have been difficult to produce without the help received from a number of people. I would like to express my thanks to the staff (past and present) of the Entomology Department of the Natural History Museum, London, for allowing me access to the superb National Collection. Also, Richard [Ric] Peigler, for alerting me to his publication on saturniid parasitoids and making certain illustrations available.
Thanks are also due to the following for allowing me to reproduce some of their images: Mark Lasko, Kurt Himmelbauer, Chris Conlan, Paolo Mazzei, Hynek Habel, Andrew Zagorinsky, Reinhart Roehrig, Serge Yevdoshenko, Emmanuel Ruiz, Jan Hellert, Bart Coppens, Kevin Guerrier, Andrey Timchenko, Mark Boddington, Werner Bruer, Debbie Scholes, Viktor Shilenkov, Heinz Rothacher and Konstantin Kopylov.
Special thanks also go to the library of the Royal Entomological Society and the Entomology Library, Natural History Museum, London, for helping me out with references, as well as Mike Amphlett for his help with the pictures.