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A. alda has dark basal spots VHW (can be faint when worn), and the cell-end bar VFW is usually closer to the post-median line than in A. hesychia, which also lacks the dark basal spots VHW.
On N. celona, the cell-end bar VHW is entirely separated from the post-discal line, while in A. hesychia the cell-end bar is very close to, usually touching, the post-discal line.