Bidessus unistriatus (Schrank, 1781)
Family: Dytiscidae
Size: 1.96 mm ( 1.75 to 2.0 mm)
Origin: Europe
Location: Hungary, Ujpest
Zwecker leg; det. Schaeflein
Photo: U.Schmidt 2021
 

 Bidessus unistriatus  (enlarged)

Bidessus unistriatus  (Flickr)

Bidessus unistriatus   (Wikimedia Commons)

Location List Dytiscidae Palaearctic Region  (Google Drive)