They both are from Bangui, RCA. I see there some E. miranda genes, in female. This is the only specimen I have. The male looks like E. preussiana, but preussiana is not known from RCA...What do you think...?
The sub apical band is very important by my opinion, but is also quite variable and without taking into account also a color and pattern of the both, upper side and underside of the wings, identification is not easy or even impossible. Mainly the underside seems to be very important. Semipreussiana is known from Cameroon and do not known from CAR, but they have about 600 km long border (partially in tropical rainforests) and who know... I bought the specimen directly in CAR along with 500 other Euphaedra specimens and there is high uncertainty of the locality of course... In that collection this one was the only. You are right that despite many similarities, the specimen has also a few dissimilarities. The sub-apical band is slightly different and the ground color of the underside also differs... Maybe it is some hybrid or maybe a new species :-))))) (I would be happy), but who can confirm this?
YEs, it is very spectacular specimen, much nicer in reality as on the picture. The most similar species I have found is E. semipreussiana - female. But I am not sure about that as I am not very skilled in Euphaedra and as Tom stated - there are so many similar/identical species... Therefore I would like to have some expert´s oppinion. Anyway big thanks for your effort!!