It is curious the anecdote of the specimen that escaped me haha. The brown spot is a pattern that some of these butterflies have on the hind wings, the butterfly that escaped me and the one I captured later are of the same species, only one has these brown spots and the other does not, which shows that there are color variants within the same species.

The following link shows some photos of this species Kricogonia lyside, there you can see specimens with the brown spot and others without it.

Link: https://v3.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=109462

Thank you very much for the support my friend, happy weekend.