Serbiona robusta robusta (Rosa, 1895)

Allolobophora robusta Rosa, 1895: 2; Pop 1949: 450; Mihailova 1965: 259; Zicsi 1982: 437. Allolobophora (Serbiona) rubusta robusta: Mršić & Šapkarev 1988: 24 . Serbiona robusta robusta: Mršić 1991: 193 .

Habitat: pastures, forests (Mihailova 1965).

Zoogeographical distribution type: Moesian (Csuzdi et al. 2011). Distribution in Bulgaria: North Bulgaria, Veliko Tarnovo (Mihailova 1965).

Serbiona tuleshkovi (Č ernosvitov, 1937)

Eophila tuleshkovi Černosvitov, 1937: 87; Omodeo 1956b: 187. Allolobophora tuleshkovi: Zicsi 1982: 440 .

Allolobophora (Serbiona) tuleshkovi: Mršić & Šapkarev 1988: 24 .

Zoogeographical distribution type: endemic species for Bulgaria (Mršiċ 1991). Distribution in Bulgaria: Pirin Mountain (Mršiċ 1991).