Nyceryx lemonia
Extremely dificult to separate from Nyceryx alophus and part of an as-yet unresolved species complex. Haxaire & Mielke ([2020]) (STI 22136) diagnosed Nyceryx lemonia on the following characters: Forewing upperside with a small reddish-brown patch near the tornus (absent in Nyceryx alophus) and a simple discal spot (double in Nyceryx alophus); hindwing upperside with four thin pale lines at the tornus (two in Nyceryx alophus), rendering that area more stripy. However, all of these features seem to be very variable individually and specimens may have only two of these three characters. For example, the type of Nyceryx lemonia has the forewing reddish-brown patch and four hindwing pale lines, but the forewing discal spot is double.
Male genitalia: Juxta very similar to that of Nyceryx continua, having a thin, triangular, sharp and strongly toothed fultura superior process. In Nyceryx alophus, the juxta has wo lateral processes, the ventral process reduced and smoothly toothed, the lateral process (which is absent in Nyceryx lemonia) large and flat.