The body is unsegmented but divisible into three distinct regions or parts: proboscis, collar and trunk.
Proboscis-The proboscis or protosome is the anterior most part of the body.It is short, club-shaped or conical and circular in cross-section.It has thick muscular wall and is hollow within.The proboscis narrows into a slender neck or proboscis stalk which is attached to the collar.
Proboscis-The proboscis or protosome is the anterior most part of the body.It is short, club-shaped or conical and circular in cross-section.It has thick muscular wall and is hollow within.The proboscis narrows into a slender neck or proboscis stalk which is attached to the collar.
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