Erpobdellid leeches (Annelida, Clitellata, Hirudinida) from Tunisia: new records with the description of a new Trocheta species.
Research article published in Zootaxa (2013)
Abstract
Up to now in Tunisia, freshwater Hirudinida are represented by two mainly haematophagous families: Hirudinidae and Glossiphonidae, and a predatory one: the family Erpobdellidae. The present study provides new information on the diversity and taxonomy of erpobdellid leeches. Identification was based, in addition to morphological data, on the length of sperm ducts and the lengths of ovisacs in relation to the neurosomite (ns) and on the shape and size of the male atrium. Five taxons are found. Two subspecies are reported for the first time in the country: Dina punctata punctata Johansson, 1927 and Dina punctata maroccana Nesemann and Neubert, 1994. Tunisian populations of two species, Erpobdella testacea (Savigny, 1820) and Trocheta africana Nesemann and Neubert, 1994, are described, with records of new localities. The new Trocheta tunisiana n. sp. is discovered and described in detail. Trocheta species live in springs in elevated areas while Erpobdella seem to prefer low altitude reservoirs. A comprehensive comparison of the three genera is presented. The disparity between the actual systematics and phylogeny is discussed. This study gives also a detailed distribution of the five species in the north of Tunisia with notes on ecological preference of the genus Dina. Finally a key for the determination of freshwater erpobdellid species from Tunisia is proposed.
Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.
Summary
Up to now in Tunisia, freshwater Hirudinida are represented by two mainly haematophagous families: Hirudinidae and Glossiphonidae, and a predatory one: the family Erpobdellidae. The present study provides new information on the diversity and taxonomy of erpobdellid leeches.
Why This Matters for Hirudotherapy
This taxonomic study surveyed erpobdellid leeches (family Erpobdellidae) in Tunisia, reporting five taxa, first-country records of two Dina punctata subspecies, redescriptions of Erpobdella testacea and Trocheta africana, and the description of a new species, Trocheta tunisiana, along with a determination key and ecological notes. Its relevance to hirudotherapy is foundational and indirect: accurate species-level identification and biodiversity mapping of the order Hirudinida underpin any rigorous secretome research by ensuring the correct organisms are studied, though erpobdellids are predatory rather than the bloodfeeding medicinal leeches used therapeutically. This is descriptive systematics with no biochemical, pharmacological, or clinical content, so it should be cited only for leech taxonomy and diversity, never as evidence about therapeutic leech use.
Citation
Erpobdellid leeches (Annelida, Clitellata, Hirudinida) from Tunisia: new records with the description of a new Trocheta species.
Ben Ahmed R et al. · Zootaxa, 2013
Added to ASH library: May 28, 2026 · Site last updated: June 18, 2026