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New record of Southern birch mouse, Sicista subtilis trizona in Hungary

2008    Cserkesz, Tamas; Gubanyi, Andras

The Southern birch mouse, Sicista subtilis (Pallas, 1773), is one of the rarest and least known small mammal species in Europe. At present, the Occurrence Of its Subspecies, the S. subtilis trizona (Frivaldszky, 1865). is confined to Hungary. The last living individual of this rare Subspecies was caught in 1926. Prior to 2000. individuals were detected only from owl-pellets, but at fewer and fewer localities. After all 80 year hiatus ill the records. the first living Specimen was trapped oil 21(st) June. 2006 in the Borsodi Mezoseg, (NE Hungary), at a location well known front previous skeletal records. In the same year. another 42 specimens were trapped. Recapture occurred only three times. The last three specimens were captured oil 221 September in 2006. So far S. subtilis trizona has Occurred mainly in weed vegetation Carduetum acanthoidis and in its edge. These patches mostly border oil abandoned plough-land vegetation (Convolvulo-Agropyretum repentis) dominated by annual grasses. The majority of the habitat had been ploughed a short lime earlier (approx. 10-15 years), and barns and other farm-buildings occupying smaller part of it.