Appearance
The male's anal appendages are pale yellow to white. The superiors are half the length of segment 10 and inferiors are at least four times the length of superiors. The inferiors tipped with black beneath. In the related species, "Copera vittata", the appendages are pale blue or creamy white. The superiors are as long as segment 10 and the inferiors nearly twice the length of superiors. The inferiors are pale within, blackish-brown externally.References:
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