Over the past few years we obtained three female Libellula luctuosa specimens, all collected in northeast Ohio, which exhibited unusually reduced wing pigmentation. The individuals were extremely difficult to identify as most keys rely heavily upon wing pigmentation for identification of many Libellula species. A description of this aberrant wing pigmentation and a photograph are provided.
Chapman, Eric G.; Chordas, Stephen W. III; and Glotzhober, Robert C.
"Aberrant Wing Pigmentation in Libellula Luctuosa Specimens From Ohio,"
The Great Lakes Entomologist, vol 32
Available at: https://scholar.valpo.edu/tgle/vol32/iss3/2