the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Arthropoda (phylum)
Chelicerata (class)
Arachnida (subclass)
Scorpiones (order)
Caraboctonidae (family)
Hadrurus (genus)
[hide inferior taxa]
Hadrurus aztecus (species)
Hadrurus gertschi (species)