Maps of Asia (excerpt) A overview map, indicating map excerption of B red square and C blue square B known distribution of Epiophlebia species in: Bhutan, China, India, Japan, Nepal, North Korea, and Vietnam, and including glacial refuges after De Lattin (1967) C simplified mountain regions (brownish shadings) of the Asian mainland. Illustrating the large portions of temperate Chinese lowlands separating the western and eastern Epiophlebia habitat zones, clearly showing the affiliation of E. diana to the western (E. laidlawi) habitat zone.