Subgenus Protodineutus Ochs, 1926a 9— Dineutus (Protodineutus) aereus (Klug, 1834) Gyrinus aereus Klug, 1834: t. 34:8 TYPE LOCALITY: Ambukohl "Ambukol" near Dongola (Sudan). SYNTYPES: not studied. DESCRIPTION: Brinck (1955:113). NEW COMBINATION: Brullé (1835: 240). GEOGRAPHIC DISTRIBUTION: AFR PAL–CS WD. REFERENCES: Aubé (1838a); White (1847); Wollaston (1867); Gemminger & Harold (1868); Régimbart (1882); Ganglbauer (1884); Régimbart (1884); Régimbart (1891); Fairmaire (1892); Gestro (1895); Régimbart (1895); Régimbart (1903); Ferrante (1908); Innes Bey (1908); Andres (1913b); Storey (1916); Alluaud (1928); Ochs (1928); Balfour-Browne (1951); Guignot (1952); Brinck (1955); Alfieri (1976); Brancucci (1979); Mazzoldi (2003); Hájek & Reiter (2014). 10— Dineutus (Protodineutus) grandis (Klug, 1834) Gyrinus grandis Klug, 1834: t. 34:6,7 TYPE LOCALITY: Sinai (Egypt). SYNTYPES: not studied. DESCRIPTION: Brinck (1955:129). NEW COMBINATION: Brullé (1835: 240). GEOGRAPHIC DISTRIBUTION: AFR PAL–ED SI. REFERENCES: Klug (1834); Aubé (1838a); White (1847); Gemminger & Harold (1868); Walker (1871); Régimbart (1882); Régimbart (1884); Stierlin (1888); Régimbart (1891); Régimbart (1895); Heyden (1899); Régimbart (1903); Peyerimhoff (1907); Ferrante (1908); Ahlwarth (1910); Zimmermann (1921); Ochs (1928); Balfour- Browne (1951); Brinck (1955); Alfieri (1976); Brancucci (1979); Baker (1997); Mazzoldi (2003); Zalat et al. (2008). REMARKS: Dineutus kaiseri Stierlin, 1888 described from Sinai (Egypt) is a synonym of D. grandis (Klug, 1834).

Published as part of Salah, Mohamed & Cueto, Juan Antonio Régil, 2015, An annotated checklist of the aquatic Adephaga (Coleoptera) of Egypt III. Noteridae, Haliplidae and Gyrinidae, pp. 187-200 in Zootaxa 4052 (3) on page 192, DOI: 10.11646/zootaxa.4052.2.3, http://zenodo.org/record/232303