Dissections of the second abdominal sternites of adults illustrating two alternate states found among subtribes of Lithosiini A apodemes of Pygarctia roseicapitis (Neumoegen & Dyar) are relatively short and the anterolateral processes articulate with the sternal plate as found in most members of Lithosiina (other than Agylla) and in Arctiini B apodemes of Gardinia anopla Hering are relatively long and the anterolateral processes are fused with the rest of the sternum as found in members of the Cisthenina, including Eudesmia and Gardinia.