Octonoba is a genus of Asian cribellate orb weavers first described in 1979 by Brent Opell. Members of this genus and those of Purumitra both have a large concave median apophysis and a conspicuous hematodocha. However, these spiders are generally much larger, with a carapace greater than 1.4 millimeters long, where those of Purumitra are usually less than 1 millimeter long.

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