I. Hedström y T. Elmqvist, «<i>Prepona</i> butterflies (Nymphalidae) and <i>Hoplopyga</i> beetles (Scarabaeidae) on the same food source during the Neotropical dry season- a case of commensalism?», Rev. Biol. Trop., vol. 32, n.º 2, pp. 313–315, nov. 1984.