What is the typical maximum leg span achieved by a mature female *Aphonopelma seemanni*?
Answer
5 to 6 inches
There is a significant size dimorphism between the sexes in the *Aphonopelma seemanni*. While the males are considerably smaller, reaching leg spans around 4 to 5 inches when fully grown, the mature females are much more robust. A fully grown female specimen can generally achieve a leg span ranging between 5 and 6 inches across her body. This difference in size often correlates with reproductive strategy, as females require greater mass to support the energy demands of producing egg sacs, whereas males prioritize rapid growth to reach sexual maturity quickly for mating pursuits.

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