Rogério Bertani, Roberto Hiroaki Nagahama, Caroline Sayuri Fukushima
We revalidate the theraphosid genus Pterinopelma Pocock 1901, describe the female of P. vitiosum for first time and Pterinopelma
sazimai sp. nov. from Brazil. These two species were included in a matrix with 35 characters and 32 taxa and
were analyzed both with all characters having same weight and with implied weights. Searches considering all characters
non-additive or some additive were also carried out. The preferred tree, obtained with implied weights, concavity 6 and
all characters non-additive shows that Pterinopelma is a monophyletic genus sister to the clade Lasiodora (Vitalius +
Nhandu). The presence of denticles on the prolateral inferior male palpal bulb keel is a synapomorphy of the genus.