Potanthus lydia lydia. FW with distinct black hole in cell.
FW spots 4 & 5 lightly detached from spot 6 & usually with slight overlap with spot 3.
Spots 2 & 3 relatively wide about 2X that of 4 & 5.
Abominal end black ;
Underside lightly dark shaded & marked with dark spots. https://www.ifoundbutterflies.org/#!...otanthus-lydia http://yutaka.it-n.jp/hes/92830001.html
Potanthus pseudomaesa. FW with black hole in cell narrow (ssp pseudomaesa).
FW spots 4 & 5 detached from spot 6 & with slight overlap tp spot 3. Spots 2 & 3 relatively broad.
Abdominal end with a black patch or band.
Underside lightly shaded , strong black spots. http://yutaka.it-n.jp/hes/92740010.html