laticaudata P. E. Muller 1867

(Figs. 3–4)

Length about 0.4–0.45 mm, width about 0.66–0.7 of length. In lateral view, ephippium asymmetrical, narrowing posteriorly; dorsal margin straight; ventral margin regularly curved from postero-ventral to anterior margin which is almost perpendicular to dorsal margin (Figs. 3A, E, 4 A–D). Paired latero-dorsal ridges absent (Figs. 3 B–C). A depression along dorsum separating two halves of ephippium well-visible; sculpture of dorsal plate as a few wavy longitudinal wrinkles and numerous spots of minute tubercles (Figs. 3D, F). Egg locule visibly extending laterally (Figs. 3 B–C), without any wrinkles, but with numerous, densely located semicircular projections (Figs. 3 E–H) well-visible also under optical microscope (Fig. 4E); a circular row of minute tubercles on each semicircular projection (Fig. 3G). Space between egg locule and dorsal margin with low, flattened projections (not associated with any air-spaces), bearing minute tubercles (Fig. 3F). Rest of ephippium surface covered by low, densely located flattened domes (Fig. 3H) – external signs of air-spaces which are well-visible under light microscope (Figs. 4 C– F), each dome with a spot of minute tubercles. Ephippium with narrow ventral rim lacking any sculpture (Fig. 3E).