Riodinid butterfly

Riodinidae, Riodininae, Detritivora barnesi. These Detritivora and Calephelis are a real nightmare to ID. I think Barnesi is the only one which can be IDed without further examination due to the "empty" area beside the blue stripe on bith the fore- and the hindwing.

I was wondering why you placed it in the Nymphalidae. I seem to detect a wavyness and small tail in the second picture that I would associate with Lycaenidae. I am new to such identifications and your reasoning would be helpful.

Close to Duskywing

Very beautiful...!!