Choeradoplana tristriata

Choeradoplana tristriata
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Platyhelminthes
Order:	Tricladida
Family:	Geoplanidae
Genus:	Choeradoplana
Species:	C. tristriata
Binomial name
Choeradoplana tristriata (Müller, 1856) Largo-Barcia, Silva & Carbayo, 2021
Synonyms
Geoplana tristriata Müller, 1856 Pseudogeoplana tristriata (Müller, 1856) Ogren & Kawakatsu, 1990

Choeradoplana tristriata is a species of land planarian belonging to the subfamily Geoplaninae. It is found in areas of Atlantic Forest within Blumenau and Serra do Tabuleiro State Park in Brazil.

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.

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.

Etymology

The specific epithet is presumably taken from the prefix tri- and the Latin striatus, meaning "striated", likely in reference to the three irregular lines on the species' body.