Identification:
The Ragadia genus is distinguished by several characteristics. Their larvae feed on ferns. On the forewings, vein 12 bulges at its base. The venation pattern on the hindwings is highly unusual. There are no veins in the cell area and the central area, and vein 5 originates from vein 7, preceding vein 6. In males, the central area features a pre-marginal band covered in lead-colored hairs that runs diagonally across the wing. In females, this band is reflected as a line with multiple raised spots (a demarcation line).
Biology and Ecology:
Ragadia species inhabit ferns within natural forests and are generally common. They are found at elevations below 1,200 meters in forested areas.
Distribution:
This genus is distributed from northeastern India to China, the Sanda Islands, and the Philippines. The species Ragadia crisilda exhibits several subspecies in Thailand. Its distribution includes North India, Myanmar, China, Hainan, Thailand, the Malay Archipelago, and Vietnam.
Value, Status, and Conservation:
While the species has a wide global distribution, it is rare in Vietnam.