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Leeches are segmented parasitic or predatory worms that comprise the subclass Hirudinea within the phylum Annelida. They are closely related to the oligochaetes , which include the earthworm , and like them have soft, muscular segmented bodies that can lengthen and contract.
List of annelid families describes the taxa relationships in the phylum Annelida, which contains more than 17,000 extant species including ragworms, earthworms, and leeches. [ 1 ] Class Polychaeta
Medical use of leeches was discussed by Avicenna in The Canon of Medicine (1020s), and by Abd al-Latif al-Baghdadi in the 12th century. [citation needed] These sources indicated leech therapy for a wide variety of ailments, including edema, [12] "blood stasis", [13] and skin diseases. [14] Earthenware jar for holding medicinal leeches
The annelids (/ ˈ æ n ə l ɪ d z /), also known as the segmented worms, are animals that comprise the phylum Annelida (/ ə ˈ n ɛ l ɪ d ə /; from Latin anellus ' little ring '). [ 3 ] [ a ] The phylum contains over 22,000 extant species , including ragworms , earthworms , and leeches .
Hirudinaria [1] is a genus of large Asian leeches belonging to the family Cylicobdellidae; [2] previously it was placed in the Hirudinidae. [3] [a] It includes species such as H. manillensis that may be called "Asian medicinal leeches", but together with the genus Poecilobdella, they are also described as Asian buffalo leeches. [3]
"Jawed leeches" - termed "Gnathobdellae" or "Gnathobdellida" - are exclusively found among the Hirudiniformes, but the order contains a number of jawless families as well. The jawed, toothed forms make up the aquatic Hirudidae and the terrestrial Haemadipsidae and Xerobdellidae (sometimes included in the preceding but worthy of recognition as ...
Hirudo is a genus of leeches of the family Hirudinidae. It was described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae. [2] The two well-accepted species within the genus are: [3] Hirudo medicinalis Linnaeus, 1758; Hirudo nipponia Whitman, 1886
This is a list of the Annelida recorded from Ireland. In Ireland the number of species is: Class Polychaeta 404 species; Class Clitellata; Subclass Oligochaeta 179 species; Subclass Hirudinea 32 species [1] Taxonomy Here the leeches and oligochaetes are placed together in the Class Clitellata. The marine Polychaeta are ranked as a Class.