FIGURE 13. Hydrovatus crassulus Sharp, 1882, instar II in Description of the second- and third-instar larvae of Hydrovatus crassulus Sharp 1882 (Coleoptera: Dytiscidae: Hydrovatini)

FIGURE 13. Hydrovatus crassulus Sharp, 1882, instar II, abdominal segment VIII and urogomphi, dorsal aspect. Numbers and lowercase letters indicate primary setae and pores, respectively. Asterisks indicate secondary setae. AB; abdominal segment VIII; UR: urogomphus. Scale bar = 0.05 mm.