JANZEN, D. & HALLWACHS, W. "Caterpillars and their adults (Lepidoptera) of the Area de Conservacion Guanacaste (ACG), Costa Rica" http://janzen.sas.upenn.edu/caterpillars/database.htm (Colour illustrations of caterpillars and adults reared from them from the Guanacaste Conservation Area in Costa Rica - at present covers only the Sphingidae, but all families will be included eventually).
KENDRICK, R. "Hong Kong Moths" http://hkusub.hku.hk/~kendrick/hkmoth.htm
LALANNE-CASSOU, B. ET AL. "Catalogue of the Lepidoptera of the French Antilles" http://www.inra.fr/Internet/Produits/PAPILLON/index.htm (An illustrated catalogue of the butterflies and moths of the French West Indies - ie Guadeloupe; Martinique; St. Martin and a few other smaller dependencies. In both English and French versions).
OEHLKE, W. "Saturniidae of Central and South America"
OEHLKE, W. "Mexican Saturniidae"
WALSH, J. B. ET AL. "The Moths of Southeastern Arizona"
WALSH, J. B. ET AL. "Sphingidae & Saturniidae of Sonora, Mexico"
HERBISON-EVANS, D. & CROSSLEY, S. "Caterpillars of Australian Moths"
KUNKEL, J.; SARGENT, T. D, ET AL. "Historical vs. Recent Moth Illustrations"
http://snapper.bio.umass.edu/kunkel/Moths (Gives scanned world moth images
from several major historical works such as Hampsons 'Catalogue of the Lepidoptera
OEHLKE, W. "Sphingidae of North America"
PITTAWAY, A.R. "Saturniidae of the Western Palaearctic"
SNYDER, J. "Web Images of North American Moths Species"
http://www.furman.edu/~snyder/leplist/ (Aims to bring together
into one location all published images of North American moth species).