Elytral apex types of North American Dineutus. A regularly rounded, without apicolateral sinuation B flatly rounded/sub-truncate, with apicolateral sinuation C sutural angle produced, with apicolateral sinuation D truncate, with serrationb E spinose, with serration.

 
 
  Part of: Gustafson GT, Miller KB (2015) Тhe New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini). ZooKeys 476: 1-135. https://doi.org/10.3897/zookeys.476.8630