FIGURE 5 in Morphology and feeding biology of larvae of the South African endemic water beetle genus Prosthetops Waterhouse, 1879 (Coleoptera: Hydraenidae)

FIGURE 5. Third instar larva of Prosthetops wolfbergensis. a: Pro and mesonotum, dorsal view; b: Thorax, ventral view, c: Detail of mesothoracic spiracular tubercle, dorsal view. Scale bars: 0.3 mm (a, b), 0.1 mm (c).