Jms. Costas, A NEW APODUVALIUS FROM BASIN OF THE RIVER NALON, ASTURIA-SPAIN (COLEOPTERA, TRECHIDAE), Revue Suisse de Zoologie, 103(3), 1996, pp. 685-690
Apoduvalius espanoli n. sp. is described and defined specifically on t
he basis of the shape of the aedeagus and the singular structures of t
he internal sac. Its taxonomic position is discussed in relation to th
e species which are morphologically closest to it. In addition, new da
ta are recorded with regard to the fauna of several caves sited in the
basin of the Nalon River.