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This study aimed to determine the susceptibility of stumps and internodes of bamboos to colonization by different types of macroinvertebrates and the formation of communities of different complexity. Semi-controlled field studies were carried out in a subtropical area of Argentina to analyse community structure, species richness of the aquatic macroinvertebrate communities and co-occurrences of predators and prey to delineate the food webs. Water-filled bamboos were sampled every season during a year by removing, without replacing, all water and macroinvertebrates. This study shows that the variation in the morphology of the container provides different resources, leading to segregation of species per container type, and allowing each of them to establish aquatic communities with differences in diversity. The Diptera was best represented in the communities of bamboos, where Culicidae showed the highest species richness and Ceratopogonidae were the most abundant numerically. Eleven taxa were present in both phytotelmata, 12 were unique in internodes and 13 in stumps. The community in internodes was composed of 21 taxa where mosquitoes were represented by Sabethini and Toxorhynchitini. By contrast, stumps were colonized by 24 taxa and Ceratopogonidae were numerically dominant. Regarding food webs established in stumps and internodes, no differences in length were found, except for the species that played equivalent roles in each of the studied phytotelmata. [ABSTRACT FROM AUTHOR]

The article studies two phytotelmatous chironomids distributed from Florida and Argentina including Monopelopia caraguata and Phytotelmatocladius delarosai. The study shows that phytotelmata are structures present in terrestrial plants that provide a suitable habitat to immature chironomids, informs that the occurrence of chironomid species Monopelopia caraguata has been reported for first time in Argentina and presents a table of the American phytotelmatous chironomids with their host plants.

A new species ofLarsiaFittkau, 1962, viz.Larsia angusticornissp. n., is described and adults and immatures are figured. The study is based on larvae collected from phytotelmata of the bromeliadAechmea distichanthaLemaire, 1853 in northeastern Argentina that were reared to the adult stage. The pupa bears thoracic horns unusual for the genus, which distinguish this new species from otherLarsiaspecies. http://zoobank.org/urn:lsid:zoobank.org:pub:41DFD96D-98E2-4FFC-9CDE-C290BCA84D45 [ABSTRACT FROM PUBLISHER]

The article focuses on a study conducted in order to describe coleopterans associated with that plants that form phytotelmata in subtropical and temperate Argentina. It discusses the identification of species of poaceae, bromeliaceae, apiaceae, araceae, urticaceae, marantaceae, arecaceae, dipsacaceae and cyperaceae as phytotelmata. The study revealed the identification of 21 classes of phytotelmata in which 15 belongs to the subtropical northern area and 9 to the temperate area of Argentina.

The objective of this study was to determine how phytotelm communities differ in four Eryngium sp. of different morphologies. Macro-invertebrate communities from 320 individual plants of Eryngium horridum, E. stenophyllum, E. serra, and E. elegans were sampled in Buenos Aires Province, Argentina. The morphology and structure of each Eryngium specimen, and water volume and debris in their phytotelmata, were measured. Morphology indicated that E. elegans and E. serra are closely related and differ from E. horridum and E. stenophyllum. The latter two species are markedly different from E. stenophyllum, the biggest of the four. The communities differed among these Eryngium species, but a large number of generalist macro-invertebrates use all four phytotelmata. Canonical correlation analysis showed that diptera are inhabitants in E. horridum, and micro-crustaceans in E. serra and E. elgans. By contrast, no specific taxa were grouped in E. stenophyllum. Results of inter-specific association ( C8 coefficient) show that species of Culicidae and Chironomidae are highly positive associations in E. horridum, by contrast with the negative association observed in E. stenophyllum. Culex renatoi (Culicidae) and Polypedilum sp. (Chironomidae) were highly likely to co-occur in the same plant of E. serra, but not with Metriocnemus eryngiotelmatus (Chironomidae). Larsia sp. (Chironomidae) was the species better associated with the other macro-invertebrates in E. elegans. The food web was constructed from Eryngium phytotelmata. This study includes an updated list of known aquatic and semi-aquatic invertebrates reported from Eryngium phytotelmata, and their bibliography. [ABSTRACT FROM AUTHOR]

Harpellales (Zygomycota: Trichomycetes) fungi are cosmopolitan obligate inhabitants of the gut of immature insects. A biweekly survey of gut fungi associated with chironomid (Chironomidae: Diptera) larvae living in the impounded water from Eryngium cabrerae (Apiaceae) phytotelmata from Punta Lara forest, Argentina, was done Jan 2003-Dec 2004. Two species of Harpellales were associated with chironomid larvae, Smittium phytotelmatum in the hindgut of Polypedilum sp. and Stachylina lentica in the midgut of both Polypedilum sp. and Metriocnemus eryngiotelmatus. No statistically significant differences were recorded in the prevalence of these Harpellales between seasons. Environmental variables (temperature, rainfall and relative humidity), impounded water volume, pH and chironomid larval density did not have an effect on the prevalence of the Trichomycetes. [ABSTRACT FROM AUTHOR]

This paper reports the discovery of the mosquitoes Toxorhynchites haemorrhoidalis (Lynch Arribálzaga) and Ochlerotatus milieu Dyar in Corrientes and Buenos Aires provinces respectively, thereby extending the geographical distribution of both species in Argentina. [ABSTRACT FROM AUTHOR]

This is the first report of the non-biting midge Metriocnemus eryngiotelmatus Donato & Paggi 2005 associated to the impounded water of Dipsacus fullonum L. plants. [ABSTRACT FROM AUTHOR]