Small mammals from various wooded areas of Wroclaw were obtained (n = 472). 5446 arthropods belonging to 106 species were collected from them. The arthropod fauna in forests, field groves, parks and cemeteries was rich and in every one of them over 60 species were found. The richest arthropod fauna was found on Clethrionomys glareolus, Apodemus agrarius and A. tauricus.