Figure 39 from: 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

Figure 39 - Dineutus serrulatus variation in males. Dineutus serrulatus serrulatus A dorsal habitus B ventral habitus C aedeagus dorsal view; Dineutus serrulatus analis Liberty Co. Florida D dorsal habitus E ventral habitus F aedeagus dorsal view; Dineutus serrulatus analis Tennessee G dorsal habitus H ventral habitus I aedeagus dorsal view; Dineutus serrulatus analis Kansas J dorsal habitus K ventral habitus L aedeagus. Scale bars for C, F, I, L ≈ 1 mm all others ≈ 2 mm.