An annotated checklist of the aquatic Polyphaga (Coleoptera) of Egypt III. Families: Helophoridae, Georissidae, Hydrochidae, Spercheidae, Scirtidae, Elmidae, Dryopidae, Limnichidae and Heteroceridae.

An annotated list of the aquatic Polyphaga (Coleoptera: Helophoridae, Georissidae, Hydrochidae, Spercheidae, Scirtidae, Elmidae, Dryopidae, Limnichidae and Heteroceridae) recorded from Egypt is presented, based on data gathered from earlier literature. The checklist includes data on the type localities, references in which the species are described in detail, world and Egyptian distributions, and previous literature, for 21 valid species belonging to 13 genera: Helophorus (Helophoridae); Georissus (Georissidae); Hydrochus (Hydrochidae); Spercheus (Spercheidae); Contacyphon (Scirtidae); Oulimnius and Potamodytes (Elmidae); Dryops and Parahelichus (Dryopidae); Bothriophorus and Pelochares (Limnichidae); Augyles and Heterocerus (Heteroceridae). The present study provides a summary that can provide a basis for future progress in the knowledge of the Egyptian aquatic Coleoptera. [ABSTRACT FROM AUTHOR]