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Table 1.
Species-specific planarian features.
NameSizeHead shape and AuriclesPigmentation
Girardia sp. 6–18 mm long and 1–3 mm wide Head: Triangular with rounded anterior tip.
Auricles: Short and broad. 
Dorsal side: Almost uniformly brown with irregularly dispersed white splotches.
Ventral side: Lighter than the dorsal side. 
Dugesia dorotocephala 30 mm long and 3.5 mm wide Head: Triangular with rather pointed anterior tip.
Auricles: Elongated, sharply pointed, extended laterally, and held elevated while the worm is moving. 
Dorsal side: Composed of spots of various shades of brown, white, and black.
Ventral side: Lighter than the dorsal side. 
Phagocata morgani 14 mm long and 2 mm wide Head: Rectangular with truncated anterior end and rounded lateral edges.
Auricles: Flattened along the head. 
Dorsal and ventral sides: White because of the lack of pigmentation. 
Phagocata gracilis 8–30 mm long and 1.5–6 mm wide. Head: Truncated at the anterior end with slightly bulging frontal margin.
Auricles: Rounded and protruding laterally at the anterior end of the head. 
Dorsal side: Dark brown to almost black.
Ventral side: Somewhat lighter than the dorsal side. The pharynx cavity contains multiple pharynges. 
NameSizeHead shape and AuriclesPigmentation
Girardia sp. 6–18 mm long and 1–3 mm wide Head: Triangular with rounded anterior tip.
Auricles: Short and broad. 
Dorsal side: Almost uniformly brown with irregularly dispersed white splotches.
Ventral side: Lighter than the dorsal side. 
Dugesia dorotocephala 30 mm long and 3.5 mm wide Head: Triangular with rather pointed anterior tip.
Auricles: Elongated, sharply pointed, extended laterally, and held elevated while the worm is moving. 
Dorsal side: Composed of spots of various shades of brown, white, and black.
Ventral side: Lighter than the dorsal side. 
Phagocata morgani 14 mm long and 2 mm wide Head: Rectangular with truncated anterior end and rounded lateral edges.
Auricles: Flattened along the head. 
Dorsal and ventral sides: White because of the lack of pigmentation. 
Phagocata gracilis 8–30 mm long and 1.5–6 mm wide. Head: Truncated at the anterior end with slightly bulging frontal margin.
Auricles: Rounded and protruding laterally at the anterior end of the head. 
Dorsal side: Dark brown to almost black.
Ventral side: Somewhat lighter than the dorsal side. The pharynx cavity contains multiple pharynges. 
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