FIGURE 4 in Convolutriloba macropyga sp. nov., an uncommonly fecund acoel (Acoelomorpha) discovered in tropical aquaria

FIGURE 4. Convolutriloba macropyga sp. nov.; whole mount stained with Alexa-488-labeled phalloidin and viewed with confocal microscopy. A. Optical section of ventral body-wall musculature. Anterior toward upper left corner. White arrows point to longitudinal muscles, white arrowheads to radial muscles, black arrowheads to U-shaped muscles. B. Projection of ventral and lateral body-wall musculature adjacent to the mouth (in upper left corner).