Figs. 5–9. O in Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia. Ix. Infraorder Nepomorpha, Families Ochteridae And Gelastocoridae

Figs. 5–9. O. marginatus (Latreille), male, structural details. 5, Male right paramere, specimen from Vietnam, CL 4368. 6, Superior appendage of right paramere, specimen from Vietnam, CL 4368. 7, Superior appendage of right paramere, specimen from Indonesia, Bali, CL 2170. 8, Medial process of pygophore, specimen from Vietnam, CL 4368. 9, Medial process of pygophore, specimen from Indonesia, Bali, CL 2170.