Butterflies of Sikkim Himalaya and their Natural History by Meena Haribal (1994).

"In all of the Neotropics there are few sights more spectacular than watching the flight of a male morpho lazily sail above the canopy of the rain forest or along a river on a brilliantly sunny day," wrote Philip J. DeVries in "The Butterflies of Costa Rica and Their Natural History."

This eventually provided a large body of information that formed the basis for his two volumes entitled "The Butterflies of Costa Rica and their Natural History" (vol.

DeVries, P.J. (1997) The Butterflies of Costa Rica and their Natural History.

Butterflies of Sikkim Himalaya and their Natural History.

(1992) Butterflies of Sikkim Himalaya and their Natural History (pp 217).

The book, "The Butterflies of Costa Rica and their Natural History," is a complete description of three of the five families of butterflies found in that Central American country.