Template:Johnson,K, 1991a

• Johnson, K., 1991. Neotropical Hairstreak Butterflies: Genera of the "Calycopis/Calystryma Grade" of Eumaeini (Lepidoptera, Lycaenidae, Theclinae) and their Diagnostics. Reports of the Museum of Natural History, University of Wisconsin, Stevens Point 21: 127 pp. PDF  
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