Megisto

Not applicable as a mythic origin. In taxonomic context, Megisto is a Linnaean genus name applied by entomologists to group certain satyrine butterflies. The provided archival title indicates formal taxonomic analysis has been conducted on the genus in the eastern United States (types, type localities, and nomenclatural relationships), but the supplied excerpt does not include historical naming rationale or etymology for the genus name.

The supplied sources do not include detailed morphological descriptions. Megisto is placed in Satyrinae (the 'satyrs' or 'browns'), and one listed species, Megisto cymela, is commonly called the 'little wood satyr,' implying a small satyr-type butterfly; however, no original-source measurements, color pattern descriptions, or diagnostic characters are provided in the excerpted material.

Not applicable as a supernatural entry. The provided sources are taxonomic and do not report behavioral, life-history, or ecological details (such as larval host plants, flight period, or habits) for the genus; therefore no biological behaviors beyond taxonomic placement are asserted here from the supplied material.