Check-lists
* List of countries might not be complete
Links and literature
[1] Farkač J., Král D. & Škorpík M. (eds.) (2005): List of threatened species in the Czech Republic. Invertebrates, Agentura ochrany přírody a krajiny ČR, Praha, 760 pp. [as "Machilis heleri" = Machilis helleri Verhoeff,1910]
Farkač J., Král D. & Škorpík M. (eds.) (2005): List of threatened species in the Czech Republic. Invertebrates, Agentura ochrany přírody a krajiny ČR, Praha, 760 pp. [as "Machilis heleri" = Machilis helleri Verhoeff,1910]
[2] Farkač J., Král D. & Škorpík M. (eds.) (2005): List of threatened species in the Czech Republic. Invertebrates, Agentura ochrany přírody a krajiny ČR, Praha, 760 pp. [as Machilis hessei Stach, 1930]
Farkač J., Král D. & Škorpík M. (eds.) (2005): List of threatened species in the Czech Republic. Invertebrates, Agentura ochrany přírody a krajiny ČR, Praha, 760 pp. [as Machilis hessei Stach, 1930]