Source Chervy, L. 2002. The terminology of larval cestodes or metacestodes. Systematic Parasitology 52: 1-33.

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PROCERCOID

• cercomer present
• no scolx
• no bladder
• no primary lacuna

PLEROCERCUS

• cercomer possibly present
• scolex present, retracted
• bladder present or absent
• no primary lacuna

CYSTICERCUS

• cercomer present or absent
• scolex present, invaginated
• bladder present or absent
• primary lacuna present

PLEROCERCOID

• cercomer present or absent
• scolex present, evaginated
• no bladder
• no primary lacuna

MEROCERCOID

• cercomer present in some
• scolex present, invaginated
• bladder present in some
• no primary lacuna

CYSTICERCOID

• cercomer reduced in some
• scolex present, retracted
• no bladder
• primary lacuna present