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The ancestor to both Eumenophorinae and the Catumiri lineage, node 21, can provide key insights into tarantula biogeography. DEC+j and BBM favor a dispersal event influencing this node, which is more consistent with members of Eumenophorinae crossing from South America to Africa. However, DEC favors vicariance, which would attribute the present-day distribution to continental drift.
| Event | DEC+j | BBM | DEC |
|---|---|---|---|
| Dispersal | 2 | 2 | 0 |
| Vicariance | 1 | 1 | 1 |
| Extinction | 0 | 0 | 0 |
