About Dichorragia nesimachus Boisduval, 1836
Dichorragia nesimachus, commonly known as the constable, is a species of nymphalid butterfly found in Asia. Its genus was previously classified in the subfamily Cyrestinae, and sometimes in Apaturinae, but it is now treated as the sister genus of Stibochiona in the subfamily Pseudergolinae. Across its wide distribution range that extends from India in the west to Japan in the east, several geographical forms with color variations have been recorded. In Vietnam, this species is thought to display hill topping behaviour, and is typically found in dense forest habitats. Individuals may also be seen mud puddling together with other species. A closely related species, Dichorragia ninus, occurs in New Guinea and the surrounding islands, though some authors classify it as a subspecies of D. nesimachus.
