Systematics and evolution of the whirligig beetle tribe Dineutini (Coleoptera: Gyrinidae: Gyrininae) Author Gustafson, Grey T Author Miller, Kelly B text Zoological Journal of the Linnean Society 2017 2017-09-30 181 1 118 150 http://academic.oup.com/zoolinnean/article/181/1/118/3078533/Systematics-and-evolution-of-the-whirligig-beetle journal article 10.1093/zoolinnean/zlw014 0024-4082 14805073 GENUS MESODINEUTES † PONOMARENKO , 1977 ( FIGS . 6E ) Type species: Mesodineutes amurensis Ponomarenko, 1977 Diagnosis: Within the tribe Dineutini , Mesodineutes can be diagnosed by the following combination of characters: (1) elytral striae present as punctures, (2) elytral apex rounded, without apicolateral sinuation or other modification, (3) metaventrite medially triangular in shape ( Fig. 6E ) and broad and (4) metacoxal process without border posterolaterally ( Fig. 6E ).