Loepa diffundata Naumann, Nässig & Löffler, 2008 was changed and described from the subspecies L. katinka diversiocellata. And in the paper, authors also proposed that L. diversiocellata is synonym of L. katinka. Loepa diffundata was recorded in South East Asia and is a wide distributed species.
In Vietnam, the species found in Lam Dong, Thua Thien Hue, Vinh Phuc and Hoang Lien, Lai Chau-Lao Cai. They are active at late after middle night, sometime nearly morning and found in the good forests with elevation about more than 700m.