Figs 28–31 in The last instar larva and pupa of Ora depressa (Coleoptera: Scirtidae), a marsh beetle with underwater pupation

Figs 28–31. Hypopharynx of the last instar larva of Ora depressa (Fabricius, 1801). 28 – hypopharynx showing terms used in larval description. 29 – close-up of anterior half of hypopharynx. 30 – close-up of keel sclerite showing six pore-like sensilla (arrows). 31 – close-up of hand-like structures and cushion area. Scale bars: 28 = 0.2 mm; 29 = 0.1 mm; 30–31 = 0.02 mm.