Figs. 76-83 in Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia. V. Hydrometridae

Figs. 76-83: 76-77: Hydrometra mindoroensis J. Polhemus; 76. Male terminal abdomen, ventral view; 77. Female terminal abdomen, lateral view. 78-80: Hydrometra okinawana Drake; 78. Apex of head, dorsal view showing anteclypeus; 79. Male terminal abdomen, lateral view. 80. Male, cluster of tightly thorns on sternite 7; 81-83: Hydrometra orientalis Lundblad; 81. Apex of head, dorsal view showing anteclypeus. 82. Male terminal abdomen, lateral view; 83. Male terminal abdomen, ventral view.