FIGURES 15−22 in Two new species of Rhagovelia from Colombia (Hemiptera: Heteroptera: Veliidae) with revised keys to the Colombian species in the torquata and robusta groups

FIGURES 15−22. Male parameres of species in the robusta group from Colombia. 15 R. zeteki, 16 R. rubra, 17 R. cachipai, 18 R. sinuata, 19 R. venezuelana, 20 R. narinensis, 21 R. nicolai, 22 R. imperatrix (Figs. 15, 16, 18, 19 not to scale, after Polhemus 1997; Figs. 17, 20, 21, 22, scale 0.05 mm, after Padilla-Gil 2011. All setae omitted).