Distribution of two species of the earthworms fauna of umadija (Serbia) in the Balkans and neighboring territories

The authors discuss the zoogeographic distribution in the Balkans of two species of the earthworm fauna of umadija, namely Aporrectodea sineporis (Omodeo, 1952) and Helodrilus cernosvitovianus (Zicsi, 1967). Aporrectodea sineporis has been recognized in the central and eastern parts of Serbia Helodrilus cernosvitovianus only on the territory of Mt. Bukulja (in the central part of the country). These are new findings for the earthworm fauna of umadija. The available evidence indicates that H. cernosvitovianus is mainly a Balkan element, while A. sineporis has a distribution of the South European type.