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Ectoparasites of 18 free-living Cuban Ground Doves, Columbina passerina insularis (Columbiformes: Columbidae), captured in the National Zoological Park, Havana, Cuba, were identified. The collected ectoparasites included two species of lice (Phthiraptera: Ischnocera): Columbicola passerinae (77.1%), and Physconelloides eurysema (50%), as well as four species of feather mites (Astigmata: Falculiferidae): Pterophagus lomatus (83.3%), Byersalges talpacoti (50%), Byersalges phyllophorus (72.2%), and Hyperaspidacarus tridentatus (27.7%). Pterophagus lomatus, B. phyllophorus, and H. tridentatus represent new records for Cuba.

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The Heteroptera (Insecta: Hemiptera) soil INTA Delta of Paraná (Campana, Buenos Aires). Spatial and temporal variation of the cast of species in different land uses. A list of 32 species of Heteroptera captured with pitfall traps at INTA (Instituto Nacional de Tecnología Agropecuaria) Delta del Paraná (Partido de Campana, Buenos Aires) is presented in this paper. Two species are mentioned as a first record for the province: Fulvius bisbistillatus (Stål) (Miridae) and Pselliopus ornaticeps (Stål) (Reduviidae). Also an analysis of Spearman rank correlation (r) and correspondence analysis is made, to assess the spatial and temporal variation of Heteroptera communities of different selected land uses.Key words: Heteroptera, Buenos Aires, habitat specialization, absolute abundance, biodiversity.Resumen: Se presenta una lista con las 32 especies de Heteroptera colectadas con trampas de caída en el INTA (Instituto Nacional de Tecnología Agropecuaria) Delta del Paraná (Partido de Campana, Buenos Aires). Se mencionan como primer registro para la provincia a 2 especies: Fulvius bisbistillatus (Stål) (Miridae) y Pselliopus ornaticeps (Stål) (Reduviidae). Se realizó un análisis de correlación de rangos de Spearman (r) y un análisis de correspondencia, con el fin de evaluar la variación espacial y temporal de las comunidades de heterópteros de los distintos usos de la tierra seleccionados.Palabras clave: Heteroptera, Buenos Aires, especialidad de hábitat, abundancia absoluta, diversidad biológica. ____________ INTRODUCCIÓNEl área del Delta del Paraná constituye una compleja planicie inundable con características biogeográficas y ecológicas únicas en el país. En ella confluyen especies de linaje subtropical (chaqueño y paranaense), como de las llanuras pampeana y mesopotámica, de clima templado (Malvárez, 1999). La elevada heterogeneidad ambiental dada por las características biogeográ-ficas, determina la yuxtaposición de diferentes comunidades de flora y fauna que resultan en una alta diversidad ecológica (Quintana et al., 2002). El paisaje del Bajo Delta en particular, se encuentra actualmente compuesto por un mosaico de parches tanto de origen natural (pajonales, bosques de ceibo, juncales, etc.) como antrópicos (forestaciones de distinto tipo y edad, plantaciones abandonadas y zonas parquizadas), que ha llevado a la formación de un paisaje más heterogéneo que el original (Kalesnik et al., 2008).La región en estudio presenta una larga historia de intervención humana. A mediados del siglo XIX, los pobladores costeros comienzan con el desmonte del bosque ribereño a fin de sustituirlo por plantaciones de frutales, mimbre y hortalizas. A partir de 1959, comienza a decaer la fruticultura y cobra importancia la forestación con sauce y álamo, de la mano de cambios producidos en la política económica y por el desarrollo de la industria papelera (Kandus et al., 2006). A partir de la década del 90, la introducción de la ganadería dentro del sistema forestal insinúa un cambio rotundo en el escenario agropecuario de la regió...

The primary aims of this paper were to provide the first inventory of carabid beetles collected in five different anthropogenic habitat types of the Lower Delta of the Paraná River, to describe their main ecological characteristics and to provide information on their distribution range in ecoregions, subregions and ecosystem complexes of Argentina and across the Neotropical region. Species were grouped according to six classes of distributions in relation to their presence in the Delta of the Paraná River. In addition, rarefaction curves were built in order to compare the seasonal species richness. We collected 1486 individuals belonging to 48 species. The southernmost distribution limit of 50% of the species is located south of the Delta region. Moreover, 21% of the species are confined to the Delta and Islands of the Parana and Uruguay Rivers ecoregion and to localities within the neighbouring ecoregions of Espinal and Pampa. Most (63%) of the species were zoophagous and 25% were either omnivorous or seed eaters; 52% were hydrophilous, 44% mesophilous and one was xerophilous. The high number of species found in this ecoregion emphasising its importance as a biodiversity hotspot of South American carabids. Human activities have led to changes in the landscape of the Delta Islands which could favour the establishment of mesophilous and xerophilous species from other ecoregions. Seasonal carabid richness is higher in the warm seasons (spring and summer) compared with the cold seasons (autumn and winter). Although, the highest absolute richness was found in the most anthropised habitat types, secondary forests had exclusive species, showing the importance of preserving the ecological mosaic of the landscape.