A remarkable new Dimorphic species of Solenopsis from Argentina

Solenopsis Westwood (Myrmicinae: Solenopsidini) is an ant genus that represents a taxonomical challenge including about 117 species in the New World, most of them Neotropical. Solenopsis can be divided in two artificial groups: “fire ants” and “thief ants”. The second group is represented by species often difficult to identify because of their small size and uniformity of color and sculpture. Most of the thief ants are pale yellow, monomorphic, and develop lestobiosis, inhabiting small colonies, often inside the nests of other species of ants. In this paper we describe a new species of thief ant, Solenopsis longicephalus sp. n. caracterized to be extremely dimorphic and with a set of characters probably convergent with other genera of Myrmicinae, such as Carebara and Pheidole.Fil: Cuezzo, Fabiana del Carmen. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales E Instituto Miguel Lillo. Instituto Superior de Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fernandez, F.. Universidad Nacional de Colombia; Colombi

Key to the soldiers of Angularitermes Emerson with a new species from Brazilian Amazonia (Isoptera: Termitidae: Nasutitermitinae)

An identification key based on characters of the soldier caste is provided for species of Angularitermes. Soldiers of previously described species in the genus, A. clypeatus, A. nasutissimus, A. orestes, A. pinocchio and A. tiguassu, are illustrated along with a new species, Angularitermes coninasus, n. sp., that is described and illustrated from soldier and worker castes. Samples of the new species were collected from epigeal nests at the Brazilian Amazon rainforest. The soldier of A. coninasus, n. sp. is distinguished from its congeners by having a short conical frontal tube, much wider at its base.Fil: Carrijo, Tiago F.. Universidade de São Paulo; BrasilFil: Rocha, Mauricio M.. Universidade de São Paulo; BrasilFil: Cuezzo, Adriana Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Instituto Superior de Entomología; ArgentinaFil: Cancello, Eliana M.. Universidade de São Paulo; Brasi

Timeless standards for species delimitation

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an individual participant data meta-analysis

Background The impact of neuraminidase inhibitors (NAIs) on influenza-related pneumonia (IRP) is not established. Our objective was to investigate the association between NAI treatment and IRP incidence and outcomes in patients hospitalised with A(H1N1)pdm09 virus infection. Methods A worldwide meta- analysis of individual participant data from 20 634 hospitalised patients with laboratory-confirmed A(H1N1)pdm09 (n = 20 021) or clinically diagnosed (n = 613) ‘pandemic influenza’. The primary outcome was radiologically confirmed IRP. Odds ratios (OR) were estimated using generalised linear mixed modelling, adjusting for NAI treatment propensity, antibiotics and corticosteroids. Results Of 20 634 included participants, 5978 (29·0%) had IRP; conversely, 3349 (16·2%) had confirmed the absence of radiographic pneumonia (the comparator). Early NAI treatment (within 2 days of symptom onset) versus no NAI was not significantly associated with IRP [adj. OR 0·83 (95% CI 0·64–1·06; P = 0·136)]. Among the 5978 patients with IRP, early NAI treatment versus none did not impact on mortality [adj. OR = 0·72 (0·44–1·17; P = 0·180)] or likelihood of requiring ventilatory support [adj. OR = 1·17 (0·71–1·92; P = 0·537)], but early treatment versus later significantly reduced mortality [adj. OR = 0·70 (0·55–0·88; P = 0·003)] and likelihood of requiring ventilatory support [adj. OR = 0·68 (0·54–0·85; P = 0·001)]. Conclusions Early NAI treatment of patients hospitalised with A(H1N1)pdm09 virus infection versus no treatment did not reduce the likelihood of IRP. However, in patients who developed IRP, early NAI treatment versus later reduced the likelihood of mortality and needing ventilatory support

Especies de moluscos no-nativos de América del Sur

Una de las mayores amenazas para la biodiversidad es la introducción de especies no-nativas. Algunas de estas desarrollan un comportamiento invasivo, causando graves daños en los ecosistemas receptores. En América del Sur, los moluscos nonativos e invasores fueron uno de los focos de discusión en el 1CAM (1er. Congreso Argentino de Malacología, 2013). Ese encuentro permitió resaltar que la información sobre las especies no-nativas en la región era escasa, dispersa, incompleta y críptica. En el año 2016 se inició el relevamiento de especies de moluscos no-nativas e invasoras de América del Sur, a fin de generar el conocimiento base para futuros estudios, el cual considera solo las especies introducidas desde otros continentes y aquellas criptogénicas (no se conoce con certeza su origen).Facultad de Ciencias Naturales y Muse

Impact of neuraminidase inhibitors on influenza A(H1N1)pdm09‐related pneumonia: an individual participant data meta‐analysis

BACKGROUND: The impact of neuraminidase inhibitors (NAIs) on influenza‐related pneumonia (IRP) is not established. Our objective was to investigate the association between NAI treatment and IRP incidence and outcomes in patients hospitalised with A(H1N1)pdm09 virus infection. METHODS: A worldwide meta‐analysis of individual participant data from 20 634 hospitalised patients with laboratory‐confirmed A(H1N1)pdm09 (n = 20 021) or clinically diagnosed (n = 613) ‘pandemic influenza’. The primary outcome was radiologically confirmed IRP. Odds ratios (OR) were estimated using generalised linear mixed modelling, adjusting for NAI treatment propensity, antibiotics and corticosteroids. RESULTS: Of 20 634 included participants, 5978 (29·0%) had IRP; conversely, 3349 (16·2%) had confirmed the absence of radiographic pneumonia (the comparator). Early NAI treatment (within 2 days of symptom onset) versus no NAI was not significantly associated with IRP [adj. OR 0·83 (95% CI 0·64–1·06; P = 0·136)]. Among the 5978 patients with IRP, early NAI treatment versus none did not impact on mortality [adj. OR = 0·72 (0·44–1·17; P = 0·180)] or likelihood of requiring ventilatory support [adj. OR = 1·17 (0·71–1·92; P = 0·537)], but early treatment versus later significantly reduced mortality [adj. OR = 0·70 (0·55–0·88; P = 0·003)] and likelihood of requiring ventilatory support [adj. OR = 0·68 (0·54–0·85; P = 0·001)]. CONCLUSIONS: Early NAI treatment of patients hospitalised with A(H1N1)pdm09 virus infection versus no treatment did not reduce the likelihood of IRP. However, in patients who developed IRP, early NAI treatment versus later reduced the likelihood of mortality and needing ventilatory support

Caetetermes taquarussu Fontes (Isoptera, Termitidae, Nasutitermitinae): description of the imago caste and new distributional records

Cuezzo, Carolina, Carrijo, Tiago F., Cancello, Eliana M. (2015): Caetetermes taquarussu Fontes (Isoptera, Termitidae, Nasutitermitinae): description of the imago caste and new distributional records. Zootaxa 3918 (2): 295-300, DOI: 10.11646/zootaxa.3918.2.1

Land snail diversity in subtropical rainforest mountains (Yungas) of Tucum\ue1n, northwestern Argentina

Volume: 22Start Page: 17End Page: 2