Figure 9 in The Macrobiotus ariekammensis species complex provides evidence for parallel evolution of claw elongation in macrobiotid tardigrades

Figure 9. Macrobiotus ariekammensis groenlandicus subsp. nov. – buccal apparatus and oral cavity armature seen in SEM: A, entire buccal apparatus; B, ventral view of the buccal crown; C, D, placoids morphology; E, magnification of the middle part of the buccal apparatus with stylet support insertion points; F, the oral cavity armature. Filled arrows indicate two globular protuberances on the ventral side of the buccal crown and buccal tube, empty arrows indicate dorsal cuticular spikes, empty indented arrowheads indicate central constrictions in first macroplacoid and subterminal constriction in second macroplacoid, filled flat arrowhead indicates a single tooth in dorsal portion of the third band of teeth in the oral cavity. Scale bars in µm.