Material and methods
Very few specimens belonging to the genus Irianjaya Koçak & Kemal, 2009 (formerly Amphiscolops Hull, 1962) are present in collections worldwide. The material for this paper was collected by the second author during two expeditions (together with Mr. R. de Vries) to the North Moluccas and Sula Islands in 1995 and the Lesser Sunda Islands in 1993. Additional material for study was received from the Natural History Museum (London; BMNH). Some of paratypes will be returned to the Museum Zoologicum Bogoriense, Cibinong (ZMB).
The map was made with the software of Carto Fauna Flora 2.0 (Barbier & Rasmont, 2000) and the photos were taken by P. Limbourg at the Royal Belgium Institute of Sciences in Brussels.