Dr. Kassai Tibor - Dr. Murai Éva szerk.: Parasitologia Hungarica 7. (Budapest, 1974)
Owing to the taxonomical problems and uncertainly in the genus • Psilotrema , I give here the measurements of some specimens of both species found in Hungary in comparison with those of the literature . Psilostomatidae Odhner, 1913 Psilotrema simillimum (Mühling, 1898) - Pig. 1, 2 Hosts: Arvicola terrestris; Locality: Dinnyés - Lake Velence, coastal reeds; Pitymys subterraneus ; Locality: Pilisborosjenő (Com. Pest) marshes. Localization: small intestine; Intensity: 2-10 exemplars. Table 1 Measurements of P. simillimum in u Host S p e Arvicola terrestris cime n s fr o m Pitymys subterraneus Body length 936 1310 1340 1005 1490 1467 Maximum width 280 436 436 440 546 523 Oral sucker 81x74 124x118 131x118 87x93 124x112 124x124 Pharynx 124x102 137x156 140x162 124x102 171x196 137x156 Ventral sucker 230x199 204x171 205x249 237x196 199x230 237x218 Testes 224x149 202x156 205x249 174x230 165x143 170x148 187x124 202x171 180x187 149x142 176x155 112x109 Ovary 156x124 124x124 131x131 138x102 183x102 113x102 Cirrus 93x43 93x49 96x43 71x37 91x62 89x41 Egg 91x39 91x37 84x49 80x39 90x56 94x61 Pig. 1: Psilotrema simillimum from Pitymys subterraneus (Orig.) Pig. 2: Psilotrema simillimum from Arvicola terrestris (Orig.) Pig. 3: Psilotrema spiculigerum from Ondatra zibethica (Orig.)
