Fig. 3: Fully unfolded corona (double arrowhead), one remaining eyespot, both lateral/ventral antennae (arrowhead) are visible, the lower one is very much shortened in perspective, while the upper one is almost perpendicular to the direction of photography. Many setae are shown in optical section (double headed arrow), also the piston (arrow), showing that the setae also run inside the antennae. Although the setae are significantly longer than the retracted body, they are fully retractable! They are likely to be coiled up in the body when retracted.
Scale bar indicates 50 µm.