Figure 3 in Revision and phylogenetic assessment of the rove beetle genus Pseudohesperus Hayashi, with broad reference to the subtribe Philonthina (Coleoptera: Staphylinidae: Staphylinini)

Figure 3. Scanning electron micrographs of neck, dorsal view. A, Quedius beesoni Cameron; B, Remus pruinosus (Erichson); C, Hesperosoma flavoterminale Schillhammer; D, Hybridolinus baoxingensis Li & Zhou; E, Neobisnius orbus (Kiesenwetter); F, Erichsonius sp.; showing nuchal ridge (upward-pointing arrows) and dorsal basal ridge (downwardpointing arrows).