Platambus

Distinguished from similar diving beetle genera by the combination of a wide epipleuron and spotted ventral surface. Species-level identification within the semenowi-group requires examination of male median lobe morphology and colour pattern details. The genus is placed in the subfamily Agabinae, tribe Agabini.

Medium-sized diving beetles with a wide epipleuron (the lateral margin of the elytra that extends ventrally). The ventral surface exhibits spot markings. Species within the semenowi-group show distinct colour patterns and median lobe morphology that serve as important diagnostic characters.

Aquatic environments in the Palearctic region. The semenowi-group species are specifically associated with higher mountain regions in Central Asia, northern India, Nepal, Bhutan, Pakistan, and China.

Palearctic region including Europe, the Near East, North Africa, and extending into higher mountain regions of Central Asia, northern India, Nepal, Bhutan, Pakistan, and China. Specific records include Sichuan Province in China (Ganzi Tibetan Autonomous Prefecture and Chengdu). Distribution records from GBIF include Denmark, Norway, and Sweden.

• Other Agabinae generaSimilar body form and aquatic habits; distinguished by the wide epipleuron and ventral spot markings characteristic of Platambus

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Two new species of the genus Platambus Thomson, 1859 from China (Coleoptera: Dytiscidae, Agabinae)