Morphology
Size: 2 - 20 m
Scolex
Length: 2-3 mm
Slit-like scolex (Bothrial scolex)
2 shallow and longitudinally grooved bothria
No hooks (unarmed)
Neck
Long neck
Strobilia
Proglottid: may be more than 3,000 segments
Anterior proglottid: width > length (rectangle)
Mature proglottid: width > length (rectangle)
Gravid proglottid: width = length (square)