Descripción del macho de Stenoterommata uruguai (Araneae: Mygalomorphae: Nemesiidae) del noreste de Argentina, con notas sobre su historia natural

The male of Stenoterommata uruguai Goloboff, 1995 is described and illustrated for the first time. A photograph of a female spermathecae collected at the same locality is also presented to confirm the identification, as well as data on the natural history of this species.Se describe e ilustra por primera vez el macho de Stenoterommata uruguaiGoloboff, 1995. También se presenta una fotografía de la espermateca de una hembra recolectada en la misma localidad para confirmar la identificación y se registran datos sobre la historia natural de esta especie.Fil: Ferretti, Nelson Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; ArgentinaFil: Pompozzi, Gabriel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Ciencias Biológicas y Biomédicas del Sur. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Instituto de Ciencias Biológicas y Biomédicas del Sur; Argentin

Cladistic reanalysis and historical biogeography of the genus Lycinus Thorell, 1894 (Araneae: Mygalomorphae: Nemesiidae) with description of two new species from western Argentina

Background: The genus Lycinus includes ten species, one from Argentina, eight from Chile, and one from Brazil. Two new species from western Argentina are described, and some data on natural history are presented. A cladistic reanalysis with the newly described species is carried out, and a reconstruction of ancestral areas and primary Brooks Parsimony Analysis are performed. The origins of the main groups of Lycinus are also discussed in that light. Results: Lycinus lagigliai sp. nov. and Lycinus nevadoensis sp. nov. are described. The distribution of these species comprised western Argentina at Mendoza province. The cladistic reanalysis showed Lycinus as monophyletic supported only by the synapomorphy of dorsal spines on male palpal tibia. The tree topology was as follows: (Lycinus epipiptus, Lycinus domeyko ((Lycinus longipes, L. nevadoensis sp. nov.) (Lycinus portoseguro, L. lagigliai sp. nov.)) (Lycinus caldera (Lycinus gajardoi, Lycinus choros)) (Lycinus tofo, Lycinus quilicura)). The biogeographical analysis showed a close relationship of the species from the Andean region and the South American Transition Zone. The reconstruction of ancestral areas recognized four vicariant nodes. Conclusions: A hitherto two unknown Lycinus species are recognized and formally described, along with a cladistic reanalysis and historical biogeographical hypotheses.Fil: Ferretti, Nelson Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Estudios Parasitológicos y de Vectores (i); Argentin

Una nueva especie de <i>Phrixotrichus</i> (Araneae, Theraphosidae) del sudoeste de Argentina y nuevos datos de distribución para <i>P. vulpinus</i>

A new species of Phrixotrichus Simon, 1889, P. pucara sp. nov., is described and illustrated based on a male from Pucará river, Neuquén province, Argentina. Male can be distinguished from all other species of the genus by the presence of a long strong spine on inner face of prolateral branch of tibial apophysis; also, it differs from P. scrofa (Molina, 1788) and P. vulpinus (Karsch, 1880) by a serrated prolateral keel of the male palpal bulb. Male resembles P. jara Perafán & Pérez-Miles, 2014 but can be distinguished by the uniform color on dorsal cephalothorax and by the palpal organ morphology being wider on the bulb base and embolus shorter and thicker, with the tip of embolus not so directed retrolaterally and prolateral keel bearing a serrated edge with three teeth. Additionally, P. vulpinus is reported for the first time for Argentina along with new distributional data.Centro de Estudios Parasitológicos y de Vectore

Cladistic reanalysis and historical biogeography of the genus <i>Lycinus</i> Thorell, 1894 (Araneae: Mygalomorphae: Nemesiidae) with description of two new species from western Argentina

Background: The genus Lycinus includes ten species, one from Argentina, eight from Chile, and one from Brazil. Two new species from western Argentina are described, and some data on natural history are presented. A cladistic reanalysis with the newly described species is carried out, and a reconstruction of ancestral areas and primary Brooks Parsimony Analysis are performed. The origins of the main groups of Lycinus are also diResults: Lycinus lagigliai sp. nov. and Lycinus nevadoensis sp. nov. are described. The distribution of these species comprised western Argentina at Mendoza province. The cladistic reanalysis showed Lycinus as monophyletic supported only by the synapomorphy of dorsal spines on male palpal tibia. The tree topology was as follows: (Lycinus epipiptus, Lycinus domeyko ((Lycinus longipes, L. nevadoensis sp. nov.) (Lycinus portoseguro, L. lagigliai sp. nov.)) (Lycinus caldera (Lycinus gajardoi, Lycinus choros)) (Lycinus tofo, Lycinus quilicura)). The biogeographical analysis showed a close relationship of the species from the Andean region and the South American Transition Zone. The reconstruction of ancestral areas recognized four vicariant nodes. Conclusions: A hitherto two unknown Lycinus species are recognized and formally described, along with a cladistic reanalysis and historical biogeographical hypotheses.Centro de Estudios Parasitológicos y de Vectore

Cladistic reanalysis and historical biogeography of the genus <i>Lycinus</i> Thorell, 1894 (Araneae: Mygalomorphae: Nemesiidae) with description of two new species from western Argentina

Background: The genus Lycinus includes ten species, one from Argentina, eight from Chile, and one from Brazil. Two new species from western Argentina are described, and some data on natural history are presented. A cladistic reanalysis with the newly described species is carried out, and a reconstruction of ancestral areas and primary Brooks Parsimony Analysis are performed. The origins of the main groups of Lycinus are also diResults: Lycinus lagigliai sp. nov. and Lycinus nevadoensis sp. nov. are described. The distribution of these species comprised western Argentina at Mendoza province. The cladistic reanalysis showed Lycinus as monophyletic supported only by the synapomorphy of dorsal spines on male palpal tibia. The tree topology was as follows: (Lycinus epipiptus, Lycinus domeyko ((Lycinus longipes, L. nevadoensis sp. nov.) (Lycinus portoseguro, L. lagigliai sp. nov.)) (Lycinus caldera (Lycinus gajardoi, Lycinus choros)) (Lycinus tofo, Lycinus quilicura)). The biogeographical analysis showed a close relationship of the species from the Andean region and the South American Transition Zone. The reconstruction of ancestral areas recognized four vicariant nodes. Conclusions: A hitherto two unknown Lycinus species are recognized and formally described, along with a cladistic reanalysis and historical biogeographical hypotheses.Centro de Estudios Parasitológicos y de Vectore

First record of the tarantula genus bumba (Araneae: Theraphosidae) from Bolivia, with the description of a new species

A new species of Bumba Pérez-Miles, Bonaldo & Miglio, 2014 is described and illustrated. This species comprises the first record of the genus for Bolivia. Bumba paunaka sp. nov. differs from the other species in the genus in the black longitudinal band on abdomen, in the long and slender embolus of the palpal bulb and in the thin and long subapical spine of the retrolateral branch of tibial apophysis. Females additionally differ in the spermathecal morphology. Finally, a distribution map for all known species of Bumba is presented.Fil: Ferretti, Nelson Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentin

Cladistic reanalysis and historical biogeography of the genus <i>Lycinus</i> Thorell, 1894 (Araneae: Mygalomorphae: Nemesiidae) with description of two new species from western Argentina

Background: The genus Lycinus includes ten species, one from Argentina, eight from Chile, and one from Brazil. Two new species from western Argentina are described, and some data on natural history are presented. A cladistic reanalysis with the newly described species is carried out, and a reconstruction of ancestral areas and primary Brooks Parsimony Analysis are performed. The origins of the main groups of Lycinus are also diResults: Lycinus lagigliai sp. nov. and Lycinus nevadoensis sp. nov. are described. The distribution of these species comprised western Argentina at Mendoza province. The cladistic reanalysis showed Lycinus as monophyletic supported only by the synapomorphy of dorsal spines on male palpal tibia. The tree topology was as follows: (Lycinus epipiptus, Lycinus domeyko ((Lycinus longipes, L. nevadoensis sp. nov.) (Lycinus portoseguro, L. lagigliai sp. nov.)) (Lycinus caldera (Lycinus gajardoi, Lycinus choros)) (Lycinus tofo, Lycinus quilicura)). The biogeographical analysis showed a close relationship of the species from the Andean region and the South American Transition Zone. The reconstruction of ancestral areas recognized four vicariant nodes. Conclusions: A hitherto two unknown Lycinus species are recognized and formally described, along with a cladistic reanalysis and historical biogeographical hypotheses.Centro de Estudios Parasitológicos y de Vectore

Defeasible decision making in a robotic environment

Decision making models for autonomous agents are recently receiving increased attention, particularly in the feld of intelligent robots. This work presents a Defeasible Logic Programming approach to decision making in an environment with single and multiple robots. We will show, how a successful tool for knowledge representation and defeasible reasoning could be applied to the problem of deciding which task should be performed next. Besides, we will explain with detailed examples how the decision process is performed when there is only one robot in the environment, and then we will consider how the same robot decides when there are more robots working in the environment.Actualmente, los modelos de toma de decisiones para agentes autónomos están recibiendo mucha atención, particularmente en el área de robots inteligentes. Este trabajo presenta un enfoque basado en Programación en Lógica Rebatible para la toma de decisiones en un ambiente con un único robot y con múltiples robots. Mostraremos como una herramienta exitosa para la representación de conocimiento y razonamiento rebatible, puede ser aplicada al problema de decidir que tarea debe ser realizada a continuación. Además, explicaremos con ejemplos detallados como se realiza el proceso de decisión cuando hay solamente un robot en el ambiente, y luego consideraremos como decide el mismo robot cuando hay otros robots presentes en el ambiente.VIII Workshop de Procesamiento Distribuido y ParaleloRed de Universidades con Carreras en Informática (RedUNCI

The first Hapalotremus Simon, 1903 (Araneae: Theraphosidae) from Argentina: description and natural history of Hapalotremus martinorum sp. nov.

A new species of Hapalotremus Simon, 1903 from northern Argentina is described and illustrated. Hapalotremus martinorum sp. nov. differs from all other congeners by the colour pattern of live specimens. Males differ in the male palpal bulb morphology, with thickened and less curved embolus having a blunt subapical keel and less-developed apical keel. Females differ in the shape of the spermathecae, with the lateral bases more pronounced than the superiors and the upper edge more rounded. Specimens were captured inhabiting short burrows or crevices under stones in high cloud forests. Hapalotremus cyclothorax (Mello-Leitão 1923) is a junior synonym of Homoeomma montanum (Mello-Leitão, 1923), Hapalotremus scintillans (Mello-Leitão 1929) is a junior synonym of Pachistopelma rufonigrum Pocock, 1901, Hapalotremus exilis (Mello-Leitão 1923) and Hapalotremus muticus (Mello-Leitão 1923) are considered species inquirenda.Fil: Cavallo, Patricio. Universidad Centro de Altos Estudios en Ciencias Exactas; ArgentinaFil: Ferretti, Nelson Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Estudios Parasitológicos y de Vectores (i); Argentina. Universidad Nacional de La Plata; Argentin

Descripción del macho de Stenoterommata uruguai (Araneae: Mygalomorphae: Nemesiidae) del noreste de Argentina, con notas sobre su historia natural

The male of Stenoterommata uruguai Goloboff, 1995 is described and illustrated for the first time. A photograph of a female spermathecae collected at the same locality is also presented to confirm the identification, as well as data on the natural history of this species.Se describe e ilustra por primera vez el macho de Stenoterommata uruguai Goloboff, 1995. También se presenta una fotografía de la espermateca de una hembra recolectada en la misma localidad para confirmar la identificación y se registran datos sobre la historia natural de esta especieCentro de Estudios Parasitológicos y de Vectore