|This is another male in hand. They have quite a slow and deliberate flight when patrolling.|
|Scan of a male in dorsal view. Luckily this species is not all that rare, although the river systems it inhabits are vulnerable to all sorts of pollution.|
Another magnificent species is C. auratus. This species was considered near-threatened according to IUCN, because of the scarcity of records, although it had been found at Tam Dao and in Central Lao PDR. It is however one of the commoner species and I have seen it in Yen Bai Province, in Cao Bang Province, in Lang Son Province and in Ninh Binh Province, and sometimes in surprisingly disturbed areas. The female has beautifully colored wings.
|A female posed in Cuc Phuong, where it co-occurs with C. nakamurai, although much less common|
|In this dorsal view scan of a female the golden-brown wings with dark-brown tips are more obvious.|
|A female fluttering low over leaf litter in the dark. Compare the female of C. albomarginatus, a mountain species, on Sebastian's blog.|
|An old female in dorsal view. Note the dark wingtips and brown, not black coloring.|