Lithobius (Lithobius) bulgaricus Verhoeff, 1925
The valid name for Lithobius (Lithobius) bulgaricus Verhoeff, 1925 is Lithobius nigripalpis (L. Koch, 1867)
Lithobius (Lithobius) bulgaricus Verhoeff, 1925
Original description: Verhoeff K.W. (1925). Beiträge zur Kenntnis der Steinläufer Lithobiiden - Archive für Naturgeschichte, 91(A): 124-160, see p. 140.
Order: Lithobiomorpha
Family: Lithobiidae
Original rank: subspecies
Original genus: Lithobius Leach, 1814
Type locality: Bulgaria: am bulgarischen Donaufer bei Rustschuk
Synonymy: Eason E.H. (1972). The type specimens and identity of the species described in the genus Lithobius by C. L. Koch and L. Koch from 1841 to 1878 (Chilopoda: Lithobiomorpha) - Bulletin of the British Museum (Natural History), Zoology, 22: 103-150, see p. 140, 146.