FIGURES 36–38, 40, 41 in Ancyronyx reticulatus and A. pulcherrimus, two new riffle beetle species from Borneo, and discussion about elmid plastron structures (Coleoptera: Elmidae)

FIGURES 36–38, 40, 41. Ancyronyx pulcherrimus: 36) aedeagus, ventral view; 37) same, dorsal view; 41) same, lateral view; 38) male sternite IX; 40) ovipositor, ventral view. FIGURE 39. A. reticulatus, ovipositor, ventral view. Scale bar 0.1 mm.