A.  Aiello, ?Dry season strategies of two Panamanian butterfly species, Anartia fatima (Nymphalinae) and Pierella luna luna (Satyrinae) (Lepidoptera: Nymphalidae).?, in Insects of Panama and Mesoamerica: Selected Studies., Q.  D. Arias and Aiello, A., Eds. Oxford: Oxford University Press, 1992, pp. 573 - 575.