Labrum-epipharynx (ventral aspect), SEM micrographs: A Oxyporus stygicus, B Pseudoxyporus quinquemaculatus, C Megalopinus sanguinitriguttatus, D Solierius obscurus, E Dianous obliquenotatus, F Stenus puthzianus, G Austroesthetus passerculus, H Euaesthetus iripennis, I Fenderia chandleri, J Agnosthaetus cariniceps, K Cephennodes clavatus, L Veraphis sp., M Palaeostigus bifoveolatus, N Scydmaenus sp., O Stenichnus sp., P Eutyphlops sp., Q Homeotyphlus sp., R Pseudopsis subulata.