The objective was to evaluate the young plants response of four urban forest species at different levels of water deficit. The manipulative experiment was conducted in nursery for three growing seasons, with saplings of Platanus x hispanica cv. acerifolia (London plane), Morus alba (mulberry), Fraxinus americana (American ash) and Acacia visco (visco). The catering treatments were: control (replacement of 100% water transpired), moderate deficit watering (replacement of 66% water transpired) and severe deficit watering (replacement of 33% water transpired). Response variables measured were height, stem diameter, leaf area and annual tree-rings width. Plants under severe deficit watering showed decreases in all growth parameters considered. Acacia visco under moderate deficit watering equivalent to 66% of transpired water had a growth comparable to control. Therefore, this specie could be considered relevant to new forestations in moderate water stress conditions.

El objetivo del trabajo fue evaluar la respuesta de plantas jóvenes de cuatro especies forestales urbanas a diferentes niveles de déficit hídrico. El ensayo se realizó en vivero, durante tres ciclos vegetativos, con plantas de Platanus x h i s p a n i c a cv. acerifolia (plátano), Morus alba (morera), Fraxinus americana (fresno americano) y Acacia visco (visco). Los tratamientos de riego fueron: control (reposición del 100% transpirado); riego deficitario moderado (reposición del 66% transpirado) y riego deficitario severo (reposición del 33% transpirado). Las variables de respuesta evaluadas fueron altura, diámetro de tallos, área foliar y ancho de anillos de crecimiento. Las plantas bajo riego deficitario severo presentaron disminuciones en todos los parámetros de crecimiento considerados. Acacia visco resultó con crecimientos comparables al control, bajo riego deficitario equivalente al 66% del agua transpirada, con lo cual puede ser considerada especie de interés para forestaciones en condiciones de estrés hídrico moderado.

Cicindis Bruch is a monospecific genus of carabid beetles endemic to Argentina. In this contribution, Cicindis horni Bruch is re-described, with addition of new morphological features of male internal sac, female genital tract and elytral closure. New information on the species' habitat and distribution is also provided. The phylogenetic placement and relationships of Cicindis within the family Carabidae are discussed on the basis of a cladistic analysis. Terminal taxa included representatives of all subfamilies of Carabidae and supertribes of Carabinae, with a major sampling of those taxa considered to be closely related to Cicindini by previous authors. The phylogenetic analysis shows the basal position of Cicindis in a clade that includes Ozaeninae, Omophronini, Scaritinae and Conjuncta. A close relationship of Cicindis with Ozaenini + Metriini is supported by the particular closure of the procoxa and the ventral position of the oviduct with respect to the spermatheca.