Figs. 44-51 in Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia. V. Hydrometridae

Figs. 44-51: 44-46: Hydrometra heoki heoki Zettel & Yang; 44. Male terminal abdomen, lateral view; 45. Male terminal abdomen, ventral view; 46. Female terminal abdomen, lateral view; 47. Hydrometra heoki paya Zettel & Yang, male termainal abdomen, ventral view; 48-51: Hydrometra jaczewskii Lundblad. 48. Apex of head, dorsal view showing anteclypeus; 49. Male terminal abdomen, lateral view; 50. Male, cluster of setae on sternite 7; 51. Female terminal abdomen, lateral view.