Chaetarthriini Bedel, 1881

Salah, Mohamed & Régil Cueto, Juan Antonio, 2017, An Annotated Checklist of the Aquatic Polyphaga (Coleoptera) of Egypt II. Family Hydrophilidae, The Coleopterists Bulletin 71 (2), pp. 259-278 : 264

Tribe Chaetarthriini Bedel, 1881 Genus Chaetarthria Stephens, 1835

31– Chaetarthria similis Wollaston, 1864 Chaetarthria similis Wollaston 1864: 93

Type locality: Canary Island [“EI Monte of Grand Canary, as well as in Palma; Teneriffe and Gomera”].

Description: Hebauer 1993: 3; Hebauer and Klausnitzer 1998: 84.

Geographic distribution: PAL; SI.

References: Hebauer 1993, 1994, 2006; Hebauer and Klausnitzer 1998; Hansen 1999, 2004; Fikáček et al. 2015; Przewoźny and Fikáček 2016.

Remarks. Because of the small size (about 1.5 mm) of C. similis , it is possible that this species, which generally hides among detritus, has been overlooked for many years. It was synonymized with C. seminulum (Herbst, 1797) by Balfour-Browne (1939), but recognized as a distinct species by Hebauer (1993). In contrast to C. seminulum that occurs in Europe, from Scandinavia to the Mediterranean region and from the British Isles to the Ural Mountains, C. similis seems to be restricted to the Mediterranean region and the southern part of Central Europe. According to Vorst and Cuppen (2003), many published records of C. seminulum from the Mediterranean region probably refer to C. similis .

III. Subfamily Enochrinae Short and Fikáček, 2013 Genus Enochrus Thomson, 1859

Subgenus Lumetus Zaitzev, 1908

32– Enochrus (Lumetus) ater (Kuwert, 1888) Philydrus ater Kuwert 1888b: 289 (279) Type locality: Egypt. Description: Ribera et al. 1997: 183; Hebauer and Klausnitzer 1998: 67; Hebauer 2004: 77. Geographic distribution: AFR, PAL; NV, SI. References: Kuwert 1888b, 1890a; Zaitzev 1908; Storey 1916; Knisch 1924a; Balfour-Browne 1951; Alfieri 1976; Burmeister 1985b; Hebauer 1991, 1994, 1997, 2004, 2006; Ribera et al. 1997; Hebauer and Klausnitzer 1998; Hansen 1999, 2004; Jia and Wang 2010; Bayram et al. 2012; Fikáček et al. 2015; Darilmaz and Ahmed 2016; Przewoźny and Fikáček 2016.

33– Enochrus (Lumetus) bicolor ( Fabricius, 1792) Hydrophilus bicolor Fabricius 1792: 184

Type locality: Denmark .

Description: Schödl 1998: 113; Jia and Wang 2010: 367; Lee and Ahn 2016: 3.

Geographic distribution: PAL; CS, ED, NV, SI, WD.

References: Orchymont 1927; Hanna 1969; Alfieri 1976; Saleh et al. 1992; Zalat et al. 1992; Hebauer 1994, 1997, 2004, 2006; Salman 1996; Schödl 1998; Hansen 1999, 2004; Darilmaz and Kiyak 2006; Short and Kanda 2006; Zalat et al. 2008; Jia and Wang 2010; Bayram et al. 2012; Badawy et al. 2013; Fikáček et al. 2015; Przewoźny and Fikáček 2016.

34– Enochrus (Lumetus) politus ( Küster, 1849) Hydrobius politus Küster 1849

Type locality: Cartagena ( Spain) .

Description: Ribera et al. 1997: 186; Hebauer 2004: 81.

Geographic distribution: AFR, PAL; CS, ED, NV, SI, WD.

References: Alfieri 1916, 1976; Orchymont 1927; Burmeister 1985b; Salman 1996; Fadl and Hassan 1997; Hebauer 1994, 1997, 2004, 2006; Ribera et al. 1997; Hansen 1999, 2004; Fikáček et al. 2010, 2015; İncekara et al. 2013; Bektaş et al. 2014; Przewoźny and Fikáček 2016.