Dr. Kassai Tibor - Dr. Murai Éva szerk.: Parasitologia Hungarica 7. (Budapest, 1974)

Table 1 Comparison of data on Mathevotaenia symmetrica symmetrica (Baylis, 1927) and M. symmetrica occidentalis ssp

. n. (in mm) SubspeM. symmetrica symmetrica M.symmetrica occidentalis cies Authors BAYLIS, 1927 SPASSKY, 1951 MURAI (present paper) Hosts Rattus rattus Cricetulus migratorius Mus musculus spicilegus Rattus norvegicus locality India Lyallpur Armenia Yerevan Hungary Budapest Mátyáshegy Hungary Budapest Pestlőrinc Body length 130 165 80-115 200 Maximum width 2 3*5 2 2 Scolex diameter 0*420 0*530-0*670 0*350 0*320 Sucker

s

' diameter 0*150 0*150 0*100 0*100-0*115 Number of testes 50-75 60-70 38-50 37-51 Egg size 0*060 0*030-0*050 0*044-0*052 0*040-0*050 Oncosphere 0*035-0*040 • 0*026-0*035 0*031-0*035 Oncosphere hooklets 0*015 0*015-0*016 0*014-0*016 taenia recorded from Hungary have been living for a long time geographically segregated from the Asiatic population. Since during the Würm glacial the two host species were restricted to a European and a Siberian population unconnected with each other 148