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.
Caroline Sayuri Fukushima, Roberto Hiroaki Nagahama, Rogério Bertani
We describe Kochiana new genus to accommodate a small Brazilian theraphosine species described originally as Mygale brunnipes by Koch (1842), resulting in Kochiana brunnipes new combination. Recently, specimens were rediscovered in northeastern Brazilian Atlantic rainforest. A preliminary cladistic analysis using equal weights parsimony and implied weights, was carried out to examine its phylogenetic placement. Kochiana new genus was monophyletic in all trees regardless of weighting scheme or concavity used. There is preliminary evidence for Kochiana new genus monophyly and weak evidence for its placement as sister group of Plesiopelma. Kochiana new genus can be characterized by the presence of a hornshaped spermatheca in females and males with a palpal bulb having prolateral accessory keels and a well developed medial crest on the embolus apex.