Tacuna is a genus of South American jumping spiders that was first described by George and Elizabeth Peckham in 1901.
Species it contains four species, found only in Argentina and Brazil: Tacuna delecta Peckham & Peckham, 1901 (type) – Brazil, Argentina Tacuna minensis Galiano, 1995 – Brazil Tacuna saltensis Galiano, 1995 – Argentina Tacuna vaga (Peckham & Peckham, 1895) – Brazil
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