Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 82. (Budapest 1990)
Nesemann, H.: Investigations on two Glossiphonia species (Hirudinea) from running waters of Central Europe with a redescription of Glossiphonia concolor (Apáthy, 1888)
MATERIAL AND METHODS In 1989 I studied the type-localities of G. concolor in Hungary and that of G. verrucata in Germany. A greater number of G. concolor was collected at the locus typicus, a slowly running secondary branch of the Danube near Dunaharaszti, wherein the water level is more constant than in the main stream. The following taxa compose the partial biocenosis of leeches in this reach of the river: Glossiphonia complanata , G. concolor , G. verrucata , G. paludosa , Albogl ossiphcTnia heteroclita (LINNAEUS), HelobdëTla stagnalis (L . ), Hemic lep - sis marginata UT. f~. MULLER ), Erpobdella octoculata (L.), E . ni gricol 1 i s ( BRANDES ), TJTna lineata (0. F. MÜLLER), D. apathyi GEDROYC, Haemopis sangui- suga (L.), Piscicola geometra (L.), Trocheta cylindrica ÖRLEY. The type locality of G. verrucata is the littoral of the lake Tegeler See, one of several larger lakes in the river lake system Havel. The standing water bodies were formed during the Pleistocene glaciers. On the shore - a costal zone of a larger lake, where sandy and gravely bottoms are dominant live some rheophil freshwater organisms together with stagnophil forms. A strong water movement is characteristic for the banks. The following leeches were obtained: G. complanata , H. stagnalis , A. heteroclita , Piscicola geometra (L.), E. octoculata , E. nigricollis , E. testacea (SAVIGNY), E. monostriata TGEDROYC), H. sanguisuga . Also anywhere in the river Havel I could collect only the three listed members of the family Glossiphoniidae . G. verrucata could not be collected in the lake Tegel See again, this species seems to be very rare in the region. So I took the original material from BENNIKE (1943) and McCARTHY (1975) to give a picture of the morphological differences between the forms in northern and southern parts of the settled area. As a result of the intensive hirudinological collectings, I could find a great number of leech populations, which belong to one of the two taxa: con color or verrucata . I wish to expound my recent examination to give some more information on these relatively less known species. A redescription of G . concolor is based on the material of the type locality. My observations concerning G. concolor are not fully in accordance with DALL (1982), because the ecological distribution of the researched populations is quite different to North European leeches of this taxon. The list of the summarized localities contains the material I have studied. Where no other data are presented, the collections are from my own. Glossiphonia verrucata (FR. MÜLLE R, 1844) (Figs 1-10) 1844 Clepsine verrucata FR. MÜLLER, De Hirudinibus circa Berolinum hocusque observatis, Diss. Berlin, p. 23 (Tegeler See, Berlin). 1950 Batracobdella verrucata : VERRIEST, Biol. Jaarb. Dodonaea, 17: 205-206, 226, Fig. 10. 1955 Glossiphonia complanata var. verrucata : HOFFMANN, Arch. Inst. GrandDucal Luxemb. Sect. Sei. nat. Phys. Math. (N.S.) 21: 195, Fig. 7b. 1957 Glossiphonia complanata var. concolor : STADLER, Nachr. naturwiss. Mus. Aschaffenburg _5_4_: 7. 1983 Glossiphonia complanata : KÜHNEL (partim), Beitr. Naturkde. Osthessen 19: 39-42. 1989 Glossiphonia verrucata : NESEMANN, Hess. faun. Briefe 2X9): 22, Abb. 3. Figs 1-10. Glossiphonia verrucata (FR. MÜLLER, 1844): 1= Danube (Soroksári Duna) at Dunaharaszti, Hungary, 2-3= Daisbach at Niederjossbach , Germany. Dorsal and ventral view, 4= Two somites on the mid-body from Daisbach, 5= Ireland, specimen from the Hungarian Natural History Museum, 6= Leitha at Bruck, Austria, 7= Isar at Grüneck, Germany, 8= 111 at Altkirch, France, 9- Isar at Volksmannsdorf , Germany, 10= Lake Wigry, Poland, specimen from the Hungarian Natural History Museum
