Figure 1; Claws of the Hypsibius type showing the criteria used to take the measurements in Meplitumen aluna gen. nov., sp. nov. A claw orientation chosen for measuring the entire length B claw orientation and referring points chosen for various claw portion measurement. The claws shown, used as example, belong to Platicrista angustata (Murray, 1905).
Figure 6; A–C claws of Meplitumen aluna sp. nov. (paratypes) A claws III B and C claws IV. The arrow indicates the structure interpretable as a very thin lunule D claws III of Platicrista angustata (Murray, 1905). It is evident that in Meplitumen aluna sp. nov. the claw secondary branches are longer and thinner than those of Platicrista angustata. Scale bar: 20 µm.
Figure 4; Shape of the stylet furca (arrow ‘a’) in species of various genera of Itaquasconinae A Mesocrista spitzbergensis (Richters, 1903) B Platicrista angustata (Murray, 1905) C Itaquascon cambewarrense Pilato, Binda & Claxton, 2002 D Astatumen trinacriae (Arcidiacono, 1962). Arrow ‘b’ indicates the stylet supports. Scale bar: 10 µm.