L. Forró szerk.: Miscellanea Zoologica Hungarica 9. 1994 (Budapest, 1994)

Nesemann, H.; Neubert, E.: New data to the leeches of the subfamily Trochetinae (Hirudinea, Erpobdellidae)

MISCELLANEA ZOOLOGICA HUNGARICA Tomus 9. 1994 p. 19-28 New data to the leeches of the subfamily Trochetinae (Hirudinea, Erpobdellidae) by H. Nesemann and E. Neubert (Received June 15, 1994) Abstract: New records of leeches of the genera Trocheta and Dina from freshwaters in Italy, Switzerland, France, Spain, Andorra, Morocco and Tunisia are listed. Two new African taxa, Trocheta africana sp. n. and Dina punctata maroccana ssp. n. are described Keywords: Trochetinae, taxonomy, Trocheta africana sp. n., Dina punctata maroccana ssp. n. Introduction The erpobdellid leech fauna of the West Mediterranean area is still relatively unknown. Up to now, only a few authors gave faunistic information concerning the Iberian Peninsula and the Maghreb. Blanchard (1893, 1908), Johansson (1914, 1927) and Moore (1939) are the most important researchers for this region. The increase of faunistic and morphological information allows to characterise some species of the Trochetinae in a more precise way. Material and methods Leeches were collected by hand on various occasions. The collection contains material from France (leg. et det. Martin Häuser), Andorra (Gerhard Hutter), Switzerland (Hasko Nesemann), Italy (Andreas Allspach and Gerhard Falkner), Spain (Andreas Dorsch), Morocco (Martin Hauser) and Tunisia (Wolfram GraO- The figures are made by H. Nesemann. Family Erpobdellidae Diagnosis: Erpobdelliformes, testisacs numerous, lacking pharyngeal stylets and postcephalic eyes. The family can be divided into three subfamilies (Sawyer 1986). 1. Erpobdellinae: male paired ducts with preatrial loop, homonomously annulated; Genera Erpobdella, Nephelopsis. 2. Mooreobdellinae: preatrial loop of male paired ducts lacking, heteronomously annulated; Genera Mooreobdella, Fadejewobdella. 3. Trochetinae: male paired ducts with preatrial loop, heteronomously annulated; Genera Trocheta, Dina, Archaeobdella. Annulus b6 always widened, often subdivided into tertiary or even quartary annuli. Atrium sometimes very large, paragnaths often big. In the majority of the species, the dorsal part of the cranial sucker is elongated, forming a typical lip. Caudal sucker well developed, only