FIGURES 1–3. Hydrovatus crassulus Sharp, 1882 in Description of the second- and third-instar larvae of Hydrovatus crassulus Sharp 1882 (Coleoptera: Dytiscidae: Hydrovatini)

FIGURES 1–3. Hydrovatus crassulus Sharp, 1882, instar III: (1) habitus, dorsal aspect, with head partially retracted into prothorax; (2) cephalic capsule, dorsal aspect; (3) cephalic capsule, ventral aspect. Lowercase letters indicate primary pores. Chaetotaxy of head appendages not represented. FR: frontoclypeus; PA: parietal; TP: tentorial pit. Scale bars = 0.50 mm for Fig. 1 and 0.07 mm for Figs 2–3.