Description
Choeradoplana tristriata is a flatworm around 22 mm in length and 2.5 mm in width. It has a slender, subcylindrical body. The head, or cephalic region, is distinguished by a rolled up and dilated "neck" with the ventral surface facing outwards, with glandular cushions. The posterior tip is pointed. The creeping sole is 90% of the body width. The dorsal side of the body is a yellow-green base color with three thin, irregular longitudinal lines made up of small black spots. In the median line, the spots are less concentrated. The ventral side is a zinc yellow color, aside from a silver-gray spot on the glandular cushions. [2]
It is distinguished from other members of Choeradoplana by its yellow-green color and irregular black lines, its zinc-yellow ventral side, a compact copulatory apparatus lacking a penis papilla, and a funnel-shaped female atrium. [2]
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