Abstract: Hydrochus spangleri Hellman 2003 (Coleoptera: Hydrochidae) is herein synonymised with Rishihydroius yadavi (Makhan, 2000). A checklist of the species of Rishihydroius Makhan, 2001 is provided. All species are illustrated.
Dr Dewanand Makhan
Willem Bilderdijkhove 19, 3438 PM Nieuwegein, The Netherlands
Department of Agricultural Entomology, Science and Research Branch, Islamic Azad University, Tehran, Iran
School of Biology, College of Science, University of Tehran, Tehran, Iran