Works in Argentina

We present a monograph of the high Andean tree genus Polylepis (Rosaceae), based on a species concept considering morphological, climatic and biogeographic distinctness as indicat…

Loasaceae subfam. Loasoideae are a nearly exclusively American plant group with a center of diversity in Peru. Numerous new taxa have been described over the past decades; one of …

Calibrachoa Cerv., Fabiana Ruiz & Pav., and Petunia Juss. form a clade within tribe Petunieae (Solanaceae). Phylogenetic studies of Petunieae, either as part of a family-wide anal…

Very few Solanaceae species are able to grow in saline soils; one of them is Lycium humile. This species is endemic to the Altiplano-Puna region (Central Andes, South America) whe…

The Andean genus Xenophyllum (Compositae, Senecioneae) is distributed along the high-Andes from northeastern Colombia to northern Chile and northwestern Argentina, mainly thriving…

During the early Eocene, Patagonia had highly diverse floras that are primarily known from compression and pollen fossils. Fossil wood studies from this epoch are scarce in the re…

We present a taxonomic synopsis of the South American genus Schizanthus Ruiz & Pav. (Solanaceae), within which we recognise seventeen taxa (14 species with three infraspecific tax…

Two new species of Xenophyllum are described from the Andes, X. funkianum sp. nov. from Ecuador and X. lorochaqui sp. nov. from northwestern Argentina. Both species are compared w…

The names Werneria melanandra and W. pygmophylla are transferred to the genus Senecio. They belong to the group of the discoid caespitose Andean Senecio, specifically to the subgr…

I present the first taxonomic revision for T. subg. Austrotradescantia, based on extensive field, cultivation and herbaria studies. I accept 13 species, three of them (i.e. T. atl…

Phylogenetic relationships of the Antiperyphanes Complex of the genus Bembidion are inferred using DNA sequences from seven genes (two nuclear ribosomal, four nuclear protein codi…

A new species of Tullbergia from Argentina is described and illustrated; it is differentiated from Tullbergia paranensis by the number of vesicles of postantennal organ, pseudocel…

Three new species of the monotypic genus Melloleitaoina Gerschman & Schiapelli, 1960 are described from northern Argentina: M. mutquina sp. n., M. uru sp. n. and M. yupanqui sp. n…

A revision of the shore-fly genus Hydrochasma Hendel. The species of the genus Hydrochasma Hendel are revised, including 27 new species (type locality in parenthesis): H. andeum (…

The genus Balera Young is reported for first time to Argentina and a new species is described, Balera floripara sp. n. Detailed morphological descriptions and illustrations of the…

Two recent faunistic surveys in the Brazilian Atlantic Forests region, the PROFAUPAR and the Biota/FAPESP Program, have provided important material for the discovery of new taxa f…

In Argentina, five genera and 14 species are recorded in the subfamilies Prostemmatinae and Nabinae: Hoplistoscelis sordidus Reuter, Lasiomerus constrictus Champion, Metatropiphor…

Eight genera and 13 species of the tribe Acanthocerini are recorded in Argentina, i.e., Athaumastus haematicus (Stål), A. macer Brailovsky, A. subcarinatus (Stål), A. subterlineat…

A key to 16 histerid species associated with decaying carcasses in Argentina is presented, including diagnoses and habitus photographs for these species. This article provides a t…

The Migadopini are a small tribe of Carabidae with 47 species that occur in South America, Australia, and New Zealand, in the sub-Antarctic areas. In South America, most of the ge…

The scarab beetle genus Pseudogeniates Ohaus (Scarabaeidae: Rutelinae: Rutelini) is endemic to Argentina. The genus includes three species: P. cordobaensis Soula, P. intermedius O…

The New World species of Polytrichophora Cresson and Fascitrichophora new genus, are revised. Fifteen new species are described (type locality in parenthesis): Fascitrishophora at…

The new Neotropical doryctine genus Doryctopambolus gen. n. is erected to contain D. pilcomayensis (van Achterberg & Braet, 2004), comb. n., which was previously placed within Pam…

The phyline plant bug genus Tytthus Fieber, previously containing 19 species, is revised. Isoproba Osborn and Drake, 1915, incorrectly placed in the subfamily Bryocorinae, tribe D…

We revise the genus Mecistostethus Marseul, sinking the monotypic genus Tarsilister Bruch as a junior synonym. Mecistostethus contains six valid species: M. pilifer Marseul, M. lo…

A new species of the forensically interesting genus Oxelytrum Gistel (Coleoptera, Silphidae), O. selknan, is described from Santa Cruz and Tierra del Fuego provinces, Argentina. T…

The Ochodaeidae (Coleoptera: Scarabaeoidea) of Argentina are revised. Previously, two species of Ochodaeinae were known from the country, both in the genus Parochodaeus Nikolajev:…

A new species of Haemogamasus mites is described from Chubut, Neuquén and Río Negro Provinces, Argentina. It was collected primarily from rodents of the genus Abrothrix (65 of 77 …

Descriptions of the adults of the two species of Dicoelothorax Ashmead, D. parviceps and D. platycerus, and the eggs, planidia and pupae of D. platycerus Ashmead are provided. Fem…

A new species, Ectinorus spiculatus, is described from Phyllotis xanthopygus (Waterhouse) and Akodon iniscatus Thomas from Neuquén Province, Argentina. Habitat characteristics are…

Systematics of the genus Itauara Müller, 1888 are reviewed. A generic diagnosis, illustrations, and descriptions are provided for males. The genus can be identified by several fea…

In Mexico, there are six scientific collections of polychaetous annelids. The "Colección Poliquetológica" from the Universidad Autónoma de Nuevo León houses one of the three most …

The species M. melini has been observed in both the Pampa and Spinal ecoregions of Argentina. Researchers have underscored that distinguishing M. melini from other species within …

Soil-dwelling organisms populate the spaces—referred to as interstices—between the litter on the soil surface and the pores in the soil's organo-mineral matrix. These organisms ha…

Biological corridors are connections which link habitats in a regional scale, allowing the gene flow between populations. The Uruguay River comprises riverside and insular riparia…

Common carp (Cyprinus carpio) is a global invader that exhibits a wide distribution in Argentina, particularly in shallow lakes and wetlands of the Pampean region. The hydrologica…

There are many hypotheses aiming to explain invasion success, but evaluating individual hypotheses in isolation may hinder our ability to understand why some species invade and ot…

The Solanum elaeagnifolium clade (Elaeagnifolium clade) contains five species of small, often rhizomatous, shrubs from deserts and dry forests in North and South America. Members …

Although spine variation within cacti species or populations is assumed to be large, the minimum sample size of different spine anatomical and morphological traits required for sp…

We compiled a checklist with all known endemic plants occurring in the Sierras of Córdoba and San Luis, an isolated mountainous range located in central Argentina. In order to obt…

A new species of Solanum belonging to section Acanthophora (subgenus Leptostemonum) from Argentina and Brazil is described. Solanum neei Chiarini & L.A.Mentz, sp. nov. is found in…

The Neotropical window fly genus Heteromphrale Krober, 1937 is revised. Two previously described species (H. chilensis (Krober, 1937) and H. cyanops (Edwards, 1932)) are redescrib…

The New World assassin bug genus Zelus Fabricius, 1803 (Insecta: Hemiptera: Heteroptera: Reduviidae: Harpactorinae: Harpactorini) is revised based on more than 10,000 specimens. S…

ABSTRACT Acinetobacter johnsonii A2 isolated from the natural community of Laguna Azul (Andean Mountains at 4,560 m above sea level), …

Laguna Vilama is a hypersaline Lake located at 4660 m altitude in the northwest of Argentina high up in the Andean Puna. The impact of ultraviolet (UV) radiation on bacterioplankt…