Figs 17–24 in The last instar larva and pupa of Ora depressa (Coleoptera: Scirtidae), a marsh beetle with underwater pupation

Figs 17–24. Maxilla of the last instar larva of Ora species. 17 – right maxilla of O. depressa (Fabricius, 1801), ventral aspect. 18 – laciniar teeth of O. depressa. 19 – close-up of the rectangular area indicated in figure 17, showing the stalk comb-bristles of the basal portion of galea. 20 – close-up of the rectangular area indicated in figure 17, showing the stalk comb-bristles of the apical portion of galea. 21 – right maxillary palpus of O. depressa, ventral aspect. 22 – right maxillary palpus of O. depressa, dorsolateral aspect. 23 – close-up of the apical portion of the maxillary palpus of O. depressa. 24 – digitiform sensillum of Ora sp. Scale bars: 17, 21–22 = 0.2 mm; 18–20, 23 = 0.02 mm; 24 = 0.01 mm.