Bistriopelma gen. nov. from the Andean region in Peru is here described, diagnosed and illustrated, together with two new species
Bistriopelma lamasi sp. nov. as a type species and
Bistriopelma matuskai sp. nov. This new genus differs from all other theraphosid genera, except the genus
Phrixotrichus Simon 1889 (sensu Perafán & Pérez-Miles 2014) and the troglobite species
Tmesiphantes hypogeus Bertani, Bichuette & Pedroso 2013, in the presence of two abdominal dorsolateral patches of the type III urticating setae.
Bistriopelma gen nov. can be distiguished from
Phrixotrichus by the different shape of spermathecae in females, consisting of two separate subparallel seminal receptacles in
Bistriopelma gen. nov. but strongly divergent in
Phrixotrichus and by the different morphology of male palpal bulb (embolus projecting retrolaterally from tegulum in
Bistriopelma gen. nov. against posteriorly in
Phrixotrichus); furthermore by the presence of basal spine on prolateral tibial apophysis, the absence of the type IV urticating setae and paired tarsal claws denticulate.
Bistriopelma gen. nov. is separated from
Tmesiphantes hypogeus by the position of the urticating seta patches (middle of abdomen in
Bistriopelma gen. nov. and posterior half in
Tmesiphantes hypogeus), the different shape of spermathecae (long separate seminal receptacles with subapical constriction in
Bistriopelma gen. nov. and short, subtriangular and widely separated in
Tmesiphantes hypogeus) and also in the extension of metatarsal scopulae. Additional comments and a distribution map of all species of this genus are provided.
Revista peruana de biología 22(3): 275 - 288
