South American buthids, and in medical terms the most consequential scorpions in the Western Hemisphere. T. serrulatus is responsible for a substantial share of serious envenomations in Brazil annually.
It is also parthenogenetic, which is exactly the wrong combination: a dangerous animal that reproduces without a mate and populates an enclosure on its own. Anyone keeping it should understand that an escape is not a single escape.
Most of the genus is slender, quick, arboreal or crevice-dwelling, and small enough to be underestimated. Supply is largely captive at this point given South American export restrictions, and legality varies. Check your jurisdiction before ordering, because several places restrict this genus specifically.
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## Myriapods