Dr. Murai Éva szerk.: Parasitologia Hungarica 11. (Budapest, 1978)

Kesult« Results are summarized in the table. Of the 11 species examined only Apodemus flavieollis, A. sylvaticus and Clethrionomys glareolus were represented in considerable number and the incidence of blood parasites in these species was evaluated. TRY PANOSOMA Trypanosomes were found in 4 host-species: Sorex minutus, A. flavicollis, A. sylvaticus and C. glareolus. Trypanosoma grosi parasiting in A. sylvaticus and A. flavicollis is distributed in the whole Europe. It was found in the Soviet Union by GROS (cit. KRAMPITZ, 1959), in Germany (KRAMPITZ, 1959), in Czechoslovakia (SEBEK, 1960; 1975a), in France (LAVERAN and PETTIT, 1909), in England (ELTON et al. , 1931), in Austria (MAHNERT, 1970), in Yugoslavia (SEBEK, 1976) and in Bulgaria (SEBEK, 1976). The rate of infection varies in different places, during the year and during successive years. It was observed in Germany in 2.0% of A. sylvaticus, and 0. 6% of A. flavicollis examined (KRAMPITZ, 1959), in Austria (the north Tyrol) in 18.7% of A. sylvaticus and 1. 2% of A. flavicollis (MAHNERT, 1970), in Czechoslovakia in 0.8% of A. sylvaticus and 1. 2% of A. flavicollis (SEBEK, 1975a) and in Yugoslavia in 0. 6% of A. sylvaticus and in 1.3% of A. flavicollis (SEBEK, 1976). Higher incidence in A. flavicollis (4.8%) than in A. sylvaticus (1.5%) was observed in Hungary similarly as in Czechoslovakia and in Yugoslavia, while reverse distribution was found in other countries. The positive findings in western Hungary were from the following localities.- A. flavicollis: 3, 2 and 1 specimens from Fertőboz, Sopron - Tómalom and Som hegy puszta, respectively. The infected A. sylvaticus occurred in Sopron - Tómalom. Finding of Trypanosoma in Sorex minutus is very interesting, because this is the first record of Trypanosoma in this host species. In Europe, Trypanosoma crocidurae has been known from Crocidura russula in France (BRUMPT - cit. KRAMPITZ, 1961) and in Germany (KRAMPITZ, 1959; 1961), from Crocidura suaveolens in Czechoslovakia (SEBEK, 1960). HENRY (cit. COX, 1970) found Try panosoma sp. in Neomys fodiens in England, SEBEK (1975a) a Trypanosoma sp

. in Sorex alpinus in Czechoslovakia. Besides, Trypanosoma soricis was described by HADWEN (cit. DOFLEIN and REICHENOW, 1952) from a shrew^of the genus Sorex in Canada. The taxonomy of Trypanosomes in small mammals is at present not wholly clear and the determination of species only from the morphological point of view is very difficult and often impossible. This is the case with our finding of Trypanosomes in the blood of S. minutus. Morphologically this Trypanosoma is similar to T. crocidurae and also to T. evo- tomys. Unfortunately I did not have the description and illustration of T. soricis available for comparison. Considering the strict host specificity seen in Trypanosomes of small rodents, our finding could be identified as T. soricis rather than T. crocidurae. The positive pygmy shrew was cought at Sopron- Tómalom. HEPATOZOON Haemococcidia of the genus Hepatozoon were found in western Hungary in Sorex araneus, A. flavicollis, A. sylvaticus and C. glareolus. AU these species have been known as hosts of Hepatozoon in Europe. The common shrew (S. araneus) is known as host of Hepa tozoon in Czechoslovakia (ERHARDOVÁ, 1955; QATAR et al., 1967; SEBEK, 1975b). KRAMPITZ (1964) found two infected individuals of S. araneus (without exact designation of their origin). Also MAHNERT (1972) found Hepatozoon in the common shrew (S. araneus) in the north Tyrol at two occasions. It is not clear if the shrews of the genera Sorex and Crocidura may be infected with different species of Hepatozoon from small mammals or if they harbour one or more till this time undescribed specific Hepatozoon species (Krampitz, 1964). Our S. araneus specimen in which Hepatozoon sp. was found originated from the locality Somhegypuszta. Hepatozoon sylvatici appears to be common in A. sylvaticus and A. flavicollis throughout Europe. This species was ascertained in Czechoslovakia in A. flavicollis (ER-