2004 Volume 55 Issue 4 Pages 243-250
There has been controversial issue on the classification of Chitoria sordida (Moore, 1866) and C. naga (Tytler, 1914). These species are similar to each other at a glance, but easily distinguishable. The diagnosis of each species is described. Chitoria sordida, ranging from Sikhim-Bhutan-Manipur to N. Myanmar (ssp. sordida) and from N. Vietnam to E. Laos (ssp. vietnamica) prefers lower altitude, ca 500m, whereas Chitoria naga, ranging from Nagaland-N. Myanmar-S. Yunnan-N. Thailand to N. Laos prefers higher altitude, ca 1,000-2,000m. The recently described C. sordida hani Yoshino, 1999 is sunk to a junior synonym of C. naga (Tytler, 1914). In addition, Chitoria modesta (Oberthur, 1906), often regarded as a subspecies of C. sordida, is separated from these two species.
