J.  R??i?ka, ?Revision of the subgenus Merodiscus of the genus Ptomaphagus (Coleoptera, Leiodidae, Cholevinae)?, Acta Societatis Zoologicae Bohemicae, vol. 57, pp. 47-52, 1993.

M.  NISHIKAWA, ?Occurrence of a New Apterous Species of Ptomaphagus (Coleoptera, Cholevidae) in Taiwan?, ELtk, vol. 21, pp. 123-128., 1993.

P.  GNASPINI, ?Brazilian Cholevidae (Coleoptera), with emphasis on cavernicolous species. II. Subgenus Iutururuca nov., subgenus of Adelopsis?, ASef pttts (n. s.), vol. 29, pp. 77-87., 1993.

P.  GNASPINI, ?Brazilian Cholevidae (Coleoptera) with emphasis on cavernicolous species IV. Adelopsis (Iutururuca) Biology and description of larvae?, MBsp, vol. 20, pp. 91-99., 1993.

S.  Zoia, ?Adelopsis sciakyi, nuova specie di Ptomaphaginae dell'Ecuador (Coleoptera Cholevidae)?, Elytron, vol. 6, pp. 35-39., 1993.