Bidessonotus species, male genitalia; A median lobe, right lateral aspect B right lateral lobe, right lateral aspect C left lateral lobe, apical segment, left lateral aspect D median lobe apex, oblique right lateral aspect 19 B. bicolor (redrawn from Guignot, 1957) 20 B. dubius 21 B. melanocephalus 22 B. obtusatus 23 B. otrerus 24 B. paludicolus 25 B. ploterus 26 B. rubellus 27 B. tibialis 28 B. truncatus 29 B. vicinus.

 
 
  Part of: Miller KB (2016) New species of Bidessonotus Régimbart, 1895 with a review of the South American species (Coleoptera, Adephaga, Dytiscidae, Hydroporinae, Bidessini). ZooKeys 622: 95-127. https://doi.org/10.3897/zookeys.622.9155