Hydrophilus piceus (Linnaeus, 1758)

Dytiscus piceus Linnaeus, 1758: 411 .

Hydrophilus angustior Rey, 1885: 227 .

Stethoxus plicifer Bedel, 1891: 313 .

Hydrous turkestanus Kuwert, 1893: 85 .

Hydrophilus viridicollis Kollar & Redtenbacher, 1844: 513 .

Hydrophilus piceus: Fabricius 1775: 7; d’Orchymont 1943b: 4; Hansen 1999a: 231; Hebauer 2002a: 27; Hansen 2004: 55; Bhagat 2013: 94; Fikáček et al. 2015c: 51; Anamika et al. 2021: 185; Przewoźny 2022: 20.

Stethoxus (Stethoxus) piceus: Régimbart 1902a: 211, pl. 7, fig., 22.

Type locality: Europe [“Europa”] (Hansen 1999a).

Distribution in India: Jammu and Kashmir (Sri Nagar: Gagribal, Nishat Bagh).

Global distribution: Azerbaijan, Algeria, Armenia, Austria, Belgium, Bosnia and Herzegovina, Bulgaria, Belarus, China, Croatia, Czech Republic, Denmark, Finland, France, Egypt, Germany, Georgia, Greece, Hungary, India, Iran, Italy, Israel, Kazakistan, Latvia, Lebanon, Lithuania, Luxembourg, Macedonia, Moldavia, Montenegro, Netherlands, Nepal, Norway, Poland, Portugal (Azores), Romania, Russia, Slovakia, Slovenia, Spain, Sweden, Syria, Switzerland, Tajikistan, and Turkey, and United Kingdom.