Description: English: Dineutus nigrior. (A) female dorsal habitus, (B) female ventral habitus, (C) male dorsal habitus, and (D) male ventral habitus. All scale bars ≈ 2 millimetres (0.079 in). Date: 23 January 2015. Source: Gustafson, Grey T., and Kelly B. Miller (2015). "The New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini)". ZooKeys 476: 1–135. DOI:10.3897/zookeys.476.8630. Author: Grey T. Gustafson, Kelly B. Miller.
Description: English: Dineutus nigrior. (A) aedeagus dorsal view, (B) aedeagus ventral view, (C) male mesotarsal claws, (D) aedeagus lateral view. Scale bar for (C) ≈ 0.10 millimetres (0.0039 in) all others ≈ 1 millimetre (0.039 in). Date: 23 January 2015. Source: Gustafson, Grey T., and Kelly B. Miller (2015). "The New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini)". ZooKeys 476: 1–135. DOI:10.3897/zookeys.476.8630. Author: Grey T. Gustafson, Kelly B. Miller.
Description: English: Dineutus nigrior range map. Date: 23 January 2015. Source: Gustafson, Grey T., and Kelly B. Miller (2015). "The New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini)". ZooKeys 476: 1–135. DOI:10.3897/zookeys.476.8630. Author: Grey T. Gustafson, Kelly B. Miller.
