The Hydrophiloid beetles of Socotra Island (Coleoptera: Georissidae, Hydrophilidae) Author Fikáček, Martin Department of Entomology, National Museum, Kunratice 1, CZ- 148 00 Praha 4, Czech Republic; e-mail: mfikacek @ gmail. com & Department of Zoology, Faculty of Science, Charles University in Prague, Viničná 7, CZ- 128 44 Praha 2, Czech Republic Author Delgado, Juan A. Departamento de Zoología, Facultad de Biología, Universidad de Murcia, 30100, Murcia, Spain; e-mail: jdelgado @ um. es Author Gentili, Elio Via San Gottardo 37, I- 21030 Varese-Rasa, Italy; e-mail: elio. gentili. 32 @ alice. it text Acta Entomologica Musei Nationalis Pragae 2012 2012-12-17 52 107 130 journal article 10.5281/zenodo.5334580 0374-1036 5334580 Helochares ( Helochares ) dilutus (Erichson, 1843) Material examined. 2 JJ, 1 ♀ ( NMPC , CULS ): Calanthia , 29.–30.iii.2001 , J. Farkač lgt .; 1 J ( NMPC ): wadi Ayhaft , 12°36.5′N 53°58.9′E , 200 m a.s.l. , 7.–8.xi.2010 , J. Bezděk lgt .; 3 spec. ( NMPC ): Qadub , 12°38.3′N 53°57.3′E , saline, 14.vi.2012 , Socotra Expedition 2012 lgt . Distribution. This species is widely distributed in sub-Saharan Africa (but not reaching northern Africa). Previously recorded from Socotra Island by WRANIK (2003) . Coelostomatini