In addition to the three so far known species of Prosopistoma Latreille, 1833 from West Palaearctic region, P. pennigerum (Müller, 1785), P. oronti Alouf, 1977 and P. orhanelicum Dalkıran, 2009, two new species are described based on larvae. Prosopistoma helenae sp. n. has been found in Iraq (Tigris River in Mosul) and Prosopistoma alaini sp. n. in Algeria (Oued Isser, Sidi Abdelli). Critical distinguishing characters of all West-Palaearctic species of Prosopistoma are discussed in detail.

Department of Botany and Zoology Faculty of Science Masaryk University Kotlářská 2 CZ 61137 Brno Czech Republic ; Email

Institute of Entomology Biology Centre CAS Branišovská 31 CZ 37005 České Budějovice Czech Republic ; Email

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