What is the typical maximum leg span of the Grand Canyon Black Tarantula (A. marxi)?
Answer
Up to about 4 inches
The Grand Canyon Black Tarantula, scientifically known as *Aphonopelma marxi*, is generally a smaller species when compared to its Brazilian counterpart. The text specifies that this species typically grows to be about 4 inches from leg tip to leg tip, achieving a leg span of up to 4+ inches. This size is considerably smaller than the larger Brazilian Black Tarantula, which commonly reaches leg spans between 6 and 7 inches, with some specimens even approaching 8 inches. This size disparity is one of the key physical distinctions between these two dark-hued spiders that are grouped under the general description of a 'black tarantula'.
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