Lumbricus improvisus Zicsi, 1963
Lumbricus improvisus Zicsi, 1963 Zool. Anz. 170: 75.
Lumbricus improvisus: Stojanović et al. 2008 Eur. J. Soil. Biol. 44: 61.
Lumbricus improvisus: Csuzdi, Pop & Pop 2011 Zool. Anz. 250: 15.
Remarks. L. improvisus, a balkanic endemite (Stojanović et al. 2008) has been reported from France (Bouché 1972) and Spain (Lainez & Jodrana 1987) as well, however, these records should be checked for conspecificity.