Tag Archives: hirudinida

Class Hirudinida is divided into three orders, Hirudinea, the “true” leeches, and two others that merit mention here because their members are morphological intermediates between oligochaetes and true leeches. Oligochaetes have variable numbers of segments, segments bear setae, and there are no suckers on the body. True leeches have 34 …

Read More »