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El libro pretende brindar un recorrido inicial a través de la fauna de arañas de la Argentina. Está organizado en veintiún capítulos. En el primero de ellos se presentan características generales de las arañas. Cada uno de los capítulos siguientes corresponde a una familia distinta. Se exponen aspectos morfológicos, fisiológicos y etológicos, entre otros. Las arañas de interés sanitario presentes en el país se encuentran incluidas. El libro cuenta con más de 120 fotografías, todas fueron realizadas por el autor, y hasta ahora no habían sido publicadas. La obra está dirigida a todos los que se interesan por el mundo de las arañas, en particular a estudiantes y profesionales de ciencias biológicas, médicas y afines.
In the last few decades the concept of self-regulation accompanied the process of dismantling the welfare state. In this context, in central countries—Europe and North America—the importance given to private regulations versus public action increased, thus requiring new mechanisms of legitimacy. To this end, appeals to the principles of economy and technical efficiency to legitimate private regulations have been made by several researchers. However, these principles acquired a negative view in Argentina because they were used to use to legitimate processes that led to various crises, especially taking into consideration the neo-liberal experience of the 1990s. Against this historical background, this paper seeks to show a particular case of legitimizing the self-regulation of non-state organizations (social clubs) by using classic topoi, which had been historically used to legitimize state action. In order to do so, this text focuses on the analysis of “Luna de Avellaneda” Act of 2007, by which the government of Buenos Aires sought to legitimize the self-regulation of clubs appealing to the classical values of democracy, participation, and solidarity. For this, the historical experience of the Argentinean political community will be observed from the perspective of the history of these clubs, thus recovering the social function they played in the diverse political and economic crises.
The name Melolontha hypocrita Mannerheim, 1829 has been long unused, even though it is the type species of Hyporhiza Dejean, 1833. I examined the only known specimen from the type series and here designate it as the lectotype. Examination of this lectotype reveals that this species is best placed in the genus Rhinaspis Perty, 1830. Consequently, the genus Hyporhiza Dejean, 1833 is confi rmed as a junior synonym of Rhinaspis. Further, the replacement name Rhinaspis fuhrmanni is proposed for Rhinaspis hypocrita (Blanchard, 1850), a new secondary homonym of Rhinaspis hypocrita (Mannerheim, 1829). A homonymy problem was also discovered and corrected for the genus Plectris LePeletier and Serville, 1828. The replacement name Plectris schoolmeestersi is proposed for Plectris paraguayensis Moser, 1924, which is a secondary junior homonym of Plectris paraguayensis (Moser, 1921).
Distributional records of the 71 tiger beetle species and subspecies known for Argentina are given together with a key and habitus photos (Coleoptera: Cicindelidae). Brasiella (Brasiella) cuyabaensis Mandl, 1970 and Brasiella (Gaymara) rotundatodilatata (Horn, 1925) are reported as new for the fauna of Argentina. Brasiella (Brasiella) stamatovi (Sumlin, 1979) is transferred to Cylindera (Plectographa), becoming C. (P.) stamatovi (Sumlin), new combination. Cylindera (Plectographa) siccalacicola (Sumlin, 1979) is placed into synonymy under Cylindera (Plectographa) hassenteufeli (Mandl, 1960), new synonymy. A lectotype is designated for Cylindera (Plectographa) patagonica bergiana (Horn, 1895).
Adenomera is a genus of Neotropical leaf-litter frogs widely distributed in South America and regarded taxonomic-wise challenging. One of these is the open-habitat Adenomera diptyx from Paraguay, which may correspond to a species complex. An integrative analysis of morphological variation, in combination with acoustic and molecular data of several populations from Argentina, Paraguay, and Brazil resulted in the recharacterization of nominal A. diptyx and the description of a new, closely related species. Adenomera diptyx is recognized by its advertisement call given at a high repetition rate (176–299 per minute), and the dorsal color pattern consisting of a light mid-dorsal line and a dark brown interorbital bar with irregular black edges. In comparison with A. diptyx, the new species, Adenomera guarani sp. nov., produces its advertisement call at a lower repetition rate (73–147 per minute), and the dorsal color pattern consists of a light, broad, mid-dorsal stripe and a mask-like patch in the interorbital region. The redefinition of A. diptyx will contribute to future studies focusing on the taxonomic status of other genetic lineages tentatively assigned to this species complex, which could represent additional unnamed species in the open-habitat Adenomera clade.
The southern South American genus Guaranita includes tiny spiders (body length ~1 mm) that lead reclusive lives under ground-objects and run rapidly when disturbed. As a result, they have been poorly collected and studied. Here we report on a recent collection of Guaranita spiders from Argentina, describing one new species (G. auadae Huber sp. nov.) and the previously unknown female of G. dobby Torres et al., 2016. In addition, we provide CO1 barcodes for all (now five) known species, first SEM data, and first chromosome data for the genus. The diploid number of Guaranita goloboffi Huber, 2000 (2n♂ = 11) is among the lowest in araneomorph spiders with monocentric chromosome structure.
El género Oogenius Solier, 1851, es revisado y ahora incluye siete especies: O. arrowi Gutiérrez (Argentina), O. castilloi Martínez y Peña (Chile), O. chilensis Ohaus (Chile), O. kuscheli Gutiérrez (Chile), O. lariosae Martínez (Argentina), O. penai Mondaca (Chile), y O. virens Solier (Chile). El género es redescrito, adultos macho y hembra de cada una de las especies son caracterizados, fotografi ados, y los caracteres morfológicos de valor diagnóstico ilustrados. Se incluye una clave de identifi cación, un mapa de distribución e información general sobre la biología de las especies. Basado en el estudio del material tipo, O. chilensis barrosi Gutiérrez, 1949, es considerado un nuevo sinónimo de O. chilensis Ohaus, 1905. Se designan lectotipos para Oogenius chilensis Ohaus, 1905 y Oogenius virens Solier, 1851.
The genus Erlandia (Cerambycinae: Erlandiini) was described by Aurivillius in 1904, containing a single species, Erlandia inopinata, distributed in Bolivia, Argentina, and Paraguay. Anew species, E. megacephala, from Argentina is described, and illustrated here. A key and distribution map of both species are provided, with a generic diagnosis using characters of both species.