Checklist of the earthworm fauna of Croatia (Oligochaeta: Lumbricidae) Author Kutuzović, Davorka Hackenberger Author Kutuzović, Branimir Hackenberger text Zootaxa 2013 3710 1 1 30 journal article http://dx.doi.org/10.11646/zootaxa.3710.1.1 efe2cf5c-7d5a-4f64-8359-1f65feeef338 1175-5326 284655 19EA61C9-17DF-48D6-A72D-32BF565D977B Octodrilus istrianus Mršić, 1991 ( Fig. 3 E) 1991 Octodrilus istrianus Mršić, Acad. Sci. Art. (His. Nat.) , 31 : 406. 2012 Octodrilus istrianus : Csuzdi, Opusc. Zool. Budapest, 43 : 97–99 . Ecological category. Anecic (oligohumic endogeic). Habitat. Dry grasslands, olive groves. Zoogeographical distribution type . Narrow range endemism ( Croatia ). Distribution in Croatia . Found only at the Istra peninsula, the Mediterranean region. Mršić ( 1990 ): Kamenjak, Velike Kršine, Kaštelir.