Nelson E Ferretti

• Ph.D.
• Researcher at National Scientific and Technical Research Council

A new species of Hapalotremus Simon, 1903 from northern Argentina is described and illustrated. Hapalotremus martinorum sp. nov. differs from all other congeners by the colour pattern of live specimens. Males differ in the male palpal bulb morphology, with thickened and less curved embolus having a blunt subapical keel and less-developed apical kee...

A generally common impression seems to be that the mygalomorphs have simple repertoires of behaviours, but many authors have concluded that this traditional portrayal of mygalomorph behaviours is misleading. An increasing number of studies of reproductive behaviour of mygalomorphs have revealed intricate and complex mechanisms of communication empl...

The genus Lycinus includes ten species, one from Argentina, eight from Chile, and one from Brazil. Two new species from western Argentina are described, and some data on natural history are presented. A cladistic reanalysis with the newly described species is carried out, and a reconstruction of ancestral areas and primary Brooks Parsimony Analysis...

A panbiogeographical analysis of Mygalomorphae spiders was undertaken in order to determine generalized tracks and biogeographical nodes in the peripampasic orogenic arc. This arc comprises mountainous systems that harbour a high number of endemic species, while they exhibit biotic connections that have become fragmented probably during Tertiary te...

We redescribe and illustrate the male of Thrixopelma ockerti Schmidt, 1994 presenting the first analysis of keels on the palpal bulb. Additionally, a new species Thrixopelma kimraykawsaki sp. nov. is described and illustrated from Peru, along with data on its natural history. This new species is known from Abancay, department of Apurimac, can be di...

We describe and illustrate a new tarantula species of the genus Plesiopelma from Lavalleja and Maldonado, Uruguay. Plesiopelma arevaloae sp. nov. is distinguished from other known species by morphological characters and molecular evidence.

A new species of Chaco Tullgren, 1905 was discovered and is formally described. Chaco aoni sp. nov. from the Santa Cruz River in Santa Cruz Province, Argentina, is the southernmost recorded species of this genus. The new species is diagnosed on the basis of the morphology of the palpal organ and tibial apophysis of males and the shape of the sperma...

A cladistics analysis of the high-altitude tarantulas of the genus Hapalotremus was carried out for the first time with a matrix of 21 taxa and 69 morphological characters using both equal and implied weights. Two consistent topologies were obtained with a concavity = 10.541, resulting from a sensitivity analysis. Both cladograms suggest Hapalotrem...

Two new species of Euathlus (Verhandlungen der Kaiserlich‐Königlichen Zoologisch‐Botanischen Gesellschaft in Wien, 1875, 25, 125) from Argentina are described. Euathlus ameghinoi sp. n. and Euathlus ventus sp. n. are the first records for the Patagonian Steppe. Here we used mitochondrial DNA (cox1) to perform the first molecular phylogeny of some r...

Environmental characteristics act as limiting factors for the establishment and survival of organisms, and this holds particular significance for ectothermic. Grammostola vachoni is an endemic Argentinean tarantula that inhabits central mountainous grasslands. In this study, we model their potential distribution and assess thermal parameters and vu...

ABSTRACT This work aims to describe a new species of Thrixopelma Schmidt, 1994 from southcentral Peru in the Department of Cusco. Thrixopelma choquequirao sp. nov. can be easily distinguished from congeneric species by the low number of labial cuspules, a very long palpal tibia, morphology of the male palpal bulb and female spermathecae. Currently...

In this contribution, Heterothele caudicula Simon, 1886 (Thera-phosidae) is transferred to the genus Thalerommata Ausserer, 1875. Thalerommata caudicula new combination is based on the examination of the type that is characterized by flattened iri-descent setae covering the abdomen, a synapomorphy of this genus. Thus, this is the ninth species of t...

Stenoterommata platensis is distributed in Argentina and Uruguay along the La Plata River basin, characterized by a predominantly humid climate and moist habitats. However, this contribution reports the presence of S. platensis outside its known distribution range, accompanied by an analysis of distribution models to assess the influence of bioclim...

The loss of biodiversity due to the effects of a number of human activities is a cause for great concern. Protected areas are currently one of the main conservation tools worldwide and their correct selection and design play a key role. Since 2000, there have been protocols for systematic conservation planning, which emphasize the identification of...

A new Pycnothelidae Chamberlin, 1917 species from Patagonian steppe, Chubut, Argentina is described and illustrated. Acanthogonatus messii Signorotto & Ferretti n. sp. differs from the remaining species of the genus by the male palpal bulb with a narrow basal portion and keel of embolus slightly-developed in conjuction with the presence of strong s...

Trapdoor spiders are known for digging deep burrows into the ground closed with a thick trapdoor. Actinopus balcarce Ríos-Tamayo & Goloboff was described based on two males from Balcarce, Buenos Aires, Argentina. In a recent survey in the type locality, we found females probably belonging to this species. Morphology of the females found allowed us...

This work reports a new record of Plesiopelma aspidosperma Ferretti & Barneche, 2013 and a distribution extension of Cyriocosmus versicolor (Simon, 1897) in Parque Nacional Copo, Santiago del Estero province, Argentina. We also present the first published color photograph of a male of Cyriocosmus versicolor. Finally, data on their natural history i...

Introduction There is significant concern regarding the impact of many human activities and the subsequent biodiversity loss. Protected areas stand as crucial global conservation tools, their correct selection and design play a key role. The biology characteristics of tarantulas make them vulnerable to fragmentation in time and space, yet they rema...

Thermal preference and thermal performance are used to describe the thermal biology of an ectothermic organism through parameters, i.e., estimating locomotor performance by maximum running speed. In this study, we assessed the thermal preference and locomotor performance of the spider Mecicobothrium thorelli Holmberg, 1882, a wintry mygalomorph spi...

We report a new record of geographic distribution for Chaco tucumana at Salta province, northern Argentina. This is the northernmost location known for the species. We also present data on the species' natural history and distribution maps including comments on the biogeographical provinces and ecoregions involved.

Paraje Tres Cerros is a low altitude hilly natural area surrounded by cattle fields and characterized by three isolated rocky formations of about 150-180 m a.s.l. located in the Corrientes province of Argentina. Their topographic and environmental conditions are unique across the whole Mesopotamian littoral of Argentina and, therefore, can be consi...

Chinchaysuyu gen. nov. is described as a new monotypic Theraphosidae genus from northern Peru, with distinct genitalic morphology. Males of Chinchaysuyu gen. nov. differ from all known species by having a palpal bulb organ with many conspicuous keels extending towards the subtegulum. Females differ by having two pairs of short and hyper-sclerotized...

The tarantula genus Tmesiphantes Simon, 1892 includes 20 valid species distributed in Argentina and Brazil. These spiders are distinguished from other Theraphosinae genera by the presence of an incrassate femur III, more evident in males, urticating hair types III and IV on the abdominal dorsum, few cuspules on the labium (0 to 30), maxillae with a...

Allocosa alticeps (Mello-Leitão, 1944) inhabits coastal sandy areas in the south of Buenos Aires, Argentina. Information about the natural history and reproductive strategies of this species is extremely scarce. Allocosa senex (Mello-Leitão, 1945) and Allocosa marindia Simó, Lise, Pompozzi & Laborda 2017 are two burrowing wolf spiders from the subf...

A new species of Linothele Karsch, 1879 from southern Peru is described and illustrated, L. mu-bii sp. nov. The new species can be distinguished from other species of the genus by scopulation in combination with the morphology of copulatory organs.

Aim Comparative phylogeography aims to unravel similarities in the population structure and evolutionary processes undergone by co‐distributed taxa, under the assumption that they will have experienced the same geoclimatic events. However, small differences in functional traits, particularly those related to dispersal abilities, may translate into...

In tarantulas, the reproductive season in their natural habitat is characterized by the presence of walking males. Grammostola vachoni is a tarantula from Argentina, and previous studies have reported that the breeding season occurs only in spring. However, walking males are also observed in other months. Thus, our objectives here were to study the...

Mecicobothrium thorelli is a very small mygalomorph spider that exclusively inhabits native mountainous grasslands of southern South America (Argentina and Uruguay). Several aspects of the biology of M. thorelli are still unknown. The goal of this study is to provide knowledge about the ecology of this species in a threatened habitat for the first...

The holotype of Hapalotremus albipes Simon, 1903 is redescribed. Four new species of the genus Hapalotremus Simon, 1903 are described: Hapalotremus apasanka sp. nov., Hapalotremus hananqheswa sp. nov., and Hapalotremus kaderkai sp. nov. from Peru, and Hapalotremus yuraqchanka sp. nov. from Bolivia. Discussion on palpal bulb morphology, ontogenetic...

A new species of Euathlus Ausserer, 1875 (Araneae: Theraphosidae: Theraphosinae), Euathlus vanessae sp. nov. is described and diagnosed. The genus is known from Chile and Argentina, and E. vanessae sp. nov. represents the first record for the genus in Peru, being the new northernmost limit of its known distribution. Distribution and natural history...

A new species of Bumba Pérez-Miles, Bonaldo & Miglio, 2014 is described and illustrated. This species comprises the first record of the genus for Bolivia. Bumba paunaka sp. nov. differs from the other species in the genus in the black longitudinal band on abdomen, in the long and slender embolus of the palpal bulb and in the thin and long subapical...

Antikuna, a new genus from Peruvian Andes, was proposed, diagnosed and described, to include seven new species: Antikuna cernickai sp. nov., A. cimrmani sp. nov., A. cyanofemur sp. nov., A. majkusi sp. nov., A. sapallanga sp. nov., A. urayrumi sp. nov. and A. valladaresi sp. nov. Antikuna gen. nov. is characterised by having the type III urticating...

Spiders are perfect model for developmental stage and growth studies because the juvenile period is broken into instars. Theraphosidae family, are largest and longest-lived spiders and females continue to grow and molt over the sexually mature stage is reached. However, their development and growth are still unknown. Thus, our objective was describ...

Evolutionary biogeography identifies areas of endemism and establishes their relationships with other areas, providing the information required to develop a hierarchical system of natural regionalization. The closely related geological and biological evolution of the planet is manifested in the existence of endemic biotas, as result of geographical...

1. Because of global climate change and its consequences, estimating the physiological responses of ectothermic organisms to temperature is of high priority. The thermal increase and changes in fire frequency are some of the consequences of global warming, which could challenge the physiological performance and thermal tolerance of individuals. 2....

Theraphosidae spiders (commonly known as tarantulas) comprise some of the largest known spiders. It is the most diverse family among Mygalomorphae and Theraphosinae, endemic to the Neotropics, is the richest subfamily. However, the knowledge on some aspects of their reproductive biology is still unknown. Usually, the sexual behavior of tarantulas h...

Biogeography is a multidisciplinary field that is concerned with delimiting and explaining the geographic distributions of organisms in space and time. Due to their distribution patterns and interesting biology (e.g., ancient lineage with a nearly cosmopolitan distribution, sedentary lifestyle with limited dispersal capabilities), tarantulas are an...

The spider genus Bistriopelma Kaderka, 2015 is endemic to Peru and includes three species known to date: Bistriopelma lamasi Kaderka, 2015, B. matuskai Kaderka, 2015 and B. titicaca Kaderka, 2017. The present contribution diagnoses, describes and illustrates two new species of Bistriopelma from Peru: B. peyoi sp. nov. and B. kiwicha sp. nov., both...

In this chapter we present an updated taxonomic review of the inland water members of the phylum Arthropoda, which includes the Chelicerata (mites and spiders), Myriapoda (aquatic millipedes), and Crustacea (crustaceans, apterygotans, and insects). The Chelicerata are covered most extensively in this chapter, while Neotropical insects (now within t...

The spider family Migidae Simon, 1889 is represented in Chile by three genera: Calathotarsus Simon, 1903, Mallecomigas Goloboff & Platnick, 1987 and Goloboffia Griswold & Ledford, 2001. In the present study, four new species of Goloboffia from Chile are described, increasing the known diversity and geographic distribution of the genus. Goloboffia m...

Mygalomorphs depend on thermal microhabitats for successful behavior, but their thermal biology is still poorly known. Grammostola vachoni Schiapelli and Gerschman, 1961 is an endemic tarantula from Argentina and it is listed as vulnerable in the IUCN Red List. However, little is known about its biology; therefore, we attempted to explore the therm...

The mygalomorph trapdoor spider family Migidae displays a quintessential Gondwanan distribution, including species in Australia, Africa, Madagascar, New Zealand, New Caledonia, and the southern cone of South America. The Argentinean fauna consists of a single species, Calathotarsus simoni Schiapelli & Gerschman, 1975 Schiapelli, R., & Gerschman, B....

In spiders, pheromones are known to be responsible for attracting the opposite sex, eliciting male searching and courtship behaviors, as well as for synchronizing potential mates in space and time. Most spiders are cannibalistic and aggressive. Thus, early recognition of a female as a possible mate is essential for males, who may suffer high energe...

The genus Homoeomma has thirteen species distributed in Argentina, Brazil, Colombia, Peru and Uruguay. In Argentina, two species are recorded, Homoeomma elegans in Misiones province and H. uruguayense in Buenos Aires, Entre Ríos and Santa Fe provinces. The objective of this work is to provide the first record of Homoeomma uruguayense in the mountai...

Disturbance is an important factor affecting community composition and biodiversity in natural ecosystems. The Ventania hill system in central Argentina presents several ecosystem disturbances. Spiders are good candidates for studies related to human impact and conservation, as they can be good biological indicators of certain ecosystems. Therefore...

La biogeografía es una disciplina de larga tradición y se define como el estudio de la distribución de los seres vivos. Aunque esta definición parece simple, oculta una gran complejidad ya que la biogeografía trasciende las disciplinas clásicas incorporando enfoques relacionados con la geología y la geografía. Como su nombre lo indica, la biogeogra...

New specimens of the genus Hapalotremus (Theraphosinae) are revised based on the examination of types and additional material collected in Argentina, Bolivia and Peru. A new generic diagnosis is proposed. New information and illustrations are provided for known species and seven new species were recognized and are newly described and illustrated. H...

Calathotarsus simoni Schiapelli & Gerschman, 1975 is an endemic and rare trapdoor spider that lives exclusively in the mountainous systems of southern Buenos Aires province, central Argentina. In previous studies, authors suggested the preference of this species to a particular soil surface type. Thus, we hypothesized that this species differs in i...

The La Plata River basin comprises the second largest fluvial system in South America and includes the southernmost remains of the "Atlantic Forest Biodiversity Hotspot". We used species distribution modelling to evaluate potential effects of climate change on six species of Stenoterommata. Changes in the size of suitable climatic regions and numbe...

Spiders have long been noted as classic examples of sexual behavior among arachnids, including extreme sexual dimorphism in some groups, and behavioral adaptations to diverse mating patterns. In recent decades, studies on the biology of Neotropical spiders have offered novel information on processes related to reproductive biology, including sexual...

Background Calathotarsussimoni Schiapelli & Gerschman 1975 is the only species of Migidae in Argentina. It is a rare and endemic spider only found in relict grassland of mountain systems in the province of Buenos Aires. This species is a habitat specialist spider occupying specific areas with certain microclimatic conditions on hilly and rocky gras...

The link between vegetation structure and spider diversity has been well explored in the literature. However, few studies have compared spider diversity and its response to vegetation at two conceptual levels: assemblage (species diversity) and ensemble (guild diversity). Because of this, we studied spider diversity in riparian and adjacent habitat...

Three new Argentinean species of the front-eyed trapdoor spider genus Idiops namely I. minguito sp. nov. from Salta and Jujuy provinces, I. piluso sp. nov. from Córdoba province and I. tolengo sp. nov. from Santiago del Estero province, are described. The male of I. hirsutipedis is redescribed and new distributional data in Argentina are presented...

Se describe Acanthoscurria sacsayhuaman sp. nov. (Araneae: Theraphosidae) en base a un macho proveniente de Cusco, Perú. Esta especie se diferencia del resto de las especies del género por la ausencia de setas estriduladoras en la cara retrolateral del trocánter del pedipalpo. Además, puede separarse por la forma del bulbo del macho y la apófisis t...

Scorpions are one of the most important taxa for ecological, conservation, and biogeographic studies. Biodiversity in the pampean grassland hilly environment is relevant because of the high number of native plant and animal taxa. We studied the diversity, abundance and phenology of a scorpion community in a natural reserve from central Argentina. S...

En el presente trabajo se presentan nuevos registros de Grammostola burzaquensis Ibarra- Grasso, 1946 en el sistema serrano de Tandilia, cuyos reportes amplían la distribución geográfica de dicha especie.

The male of Stenoterommata uruguai Goloboff, 1995 is described and illustrated for the first time. A photograph of a female spermathecae collected at the same locality is also presented to confirm the identification, as well as data on the natural history of this species.

Three unknown species of Euathlus Ausserer 1875 (Araneae: Theraphosidae) are recognized and formally described. Euathlus diamante Ferretti sp. Nov., E. Sagei Ferretti sp. Nov., and E. tenebrarum Ferretti sp. Nov. are described from the Mendoza and Neuquén provinces of western Argentina. The cladistic analysis showed Euathlus as monophyletic support...

This is the first record for the tarantula Vitalius longisternalis Bertani, 2001 in Parana and Araucaria Forests, Misiones province, northeastern Argentina. Specimens were found at Iguazú National Park and Urugua-í Wildlife Reserve. Data on its natural history is provided.

Se describe e ilustra una nueva especie de Phrixotrichus Simon, 1889, P. pucara sp. nov., basada en un macho del río Pucará, provincia de Neuquén, Argentina. El macho se distingue de las especies restantes del género por la presencia de una espina larga y fuerte en la cara interna de la rama prolateral de la apófisis tibial; además, difiere de P. s...

This is the first record for the species Vitalius roseus (Mello-Leitão, 1923) in Argentina. The present study expands the known geographic distribution of the species to western Uruguay River. Data on natural history and sexual behaviour of the species is provided.

Lycosa poliostoma (C. L. Koch, 1847) y Hogna gumia (Petrunkevitch, 1911) son dos arañas lobo (Lycosidae) que se encuentran presentes en Argentina. A pesar de que el conocimiento sobre el comportamiento reproductivo de la familia Lycosidae es amplio, en Argentina poco se sabe sobre la biología reproductiva de algunas especies en particular. El prese...

El ambiente de pastizal provee diversos hábitats para la sustentabilidad de la biodiversidad. En particular, el sistema serrano de Tandilia se ubica en el Sudeste de la provincia de Buenos Aires, Argentina y posee un área protegida y representativa del pastizal serrano, la Reserva Natural “Sierra del Tigre”. Este estudio tiene como objetivo conocer...

THERAPHOSIDAE Resumen Las Theraphosidae son un grupo homogéneo de arañas migalomorfas que, en general, son de gran tamaño y presentan el cuerpo densamente cubierto de setas. Este grupo incluye 124 géneros y más de 950 especies de distribución principalmente gondwánica. Más de la mitad de las especies están representadas en el Nuevo Mundo, donde se...

A new species of Chaco Tullgren, 1905 is described and illustrated from the Andean foothills of Mendoza province, western Argentina. This is the tenth species of the genus and the first record of Chaco in Mendoza. An updated key is presented for all Chaco species. The cladistic analysis based on a previously published morphological character matrix...

Conservation biogeography involves the application of biogeographical principles and methods to conservation issues. The identification of areas of endemism is important for both historical biogeography and conservation. Mygalomorphs spiders have poor vagility, limited dispersal mechanisms and sedentary habits. In this study we use a panbiogeograph...

The "Ernesto Tornquist" Provincial Park (ETPP) is located inside the Ventania system (Argentina) and was created to protect one of the last relicts of pampean grasslands. Even though many studies have looked at the vertebrate faunal diversity, biology, and conservation in this Park, few studies have been dedicated to arthropods. Among these, spider...

The present study used the previously defined biogeographic provinces from Argentina as the starting point for a parsimony analysis of endemicity and cluster analysis. The goal of the study was to use a dataset of distributional patterns of mygalomorph spiders from Argentina to evaluate the historical relationships of the biogeographic provinces. T...

Using a resident (R)–intruder (I) paradigm, 132 encounters between female Acanthogonatus centralis were investigated in order to study its intrasexual interactions and aggressiveness. We also examined the effect of presumed increased hunger levels on the incidence of killing and cannibalism. We selected 3 groups with different satiation levels: med...

A population of Calathotarsus simoni Schiapelli and Gerschman (1975) was discovered on a hillside in the Ventania system, Argentina. Our objectives were to quantify burrow density, record burrow morphology and door characteristics and describe the micro-habitat. We counted 57 burrows and report a density of 0.01 burrows/m2. Aggregation indices sugg...

En el presente trabajo se analizó la riqueza específica, abundancia y actividad de la comunidad de arañas Mygalomorphae en la Reserva Natural Sierra del Tigre, Buenos Aires, Argentina. Este ecosistema serrano alberga numerosas especies endémicas y es rico en fauna y flora nativa. La abundancia de arañas se muestreó mensualmente desde mayo de 2011 a...

Agroecosystems are populated by a great diversity and number of invertebrates that are often disturbed by agricultural practices and grazing. The arthropods are good indicators of the heterogeneity of the habitat, the biodiversity of the ecosystem and the stress conditions of the environment, therefore its use for environmental management can reduc...

Grammostola diminuta sp. nov. (Araneae: Theraphosidae) is described from northwestern Argentina; Grammostola vachoni Schiapelli and Gerschman 1961 is considered a senior synonym of Grammostola fossor syn. nov. Schmidt 2001 on the basis of material examined from the collection of the Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (MACN...

Two new species of Plesiopelma Pocock, 1901 from northern Argentina are described and diagnosed based on males and habitat descriptions are presented. Males of Plesiopelma paganoi sp. nov. differ from most of species by the absence of spiniform setae on the retrolateral face of cymbium, aspect of the palpal bulb. Plesiopelma aspidosperma sp. nov. d...

The spider Latrodectus mirabilis (Holmberg, 1876) is commonly found in cereals crops of central Argentina. We studied its diet composition at the field and capture rate on leaf-cutting ants based on laboratory experiments. This study comprises the first approach that documents the diet of L. mirabilis in wheat and oat fields of central Argentina. W...

Ballooning, a form of dispersal rarely seen in mygalomorph spiders, was observed in 13 individuals of an undetermined species of Actinopus under laboratory conditions. After ascending a stick, each spiderling initiated ballooning from either the horizontal lines between sticks or from the stick’s edges. They became airborne by dropping and dangling...

A pesar de que se han publicado datos sobre aspectos ecológicos y/o de comportamiento reproductivo de algunas especies de migalomorfas, aún resta por conocer las características reproductivas de su mayoría. Catumiri parvum (Keyseling 1878) (Theraphosidae) y Stenoterommata platensis (Homlberg 1881) (Nemesiidae) son dos especies de migalomorfas abund...

The “Ernesto Tornquist” Provincial Park (ETPP) is located inside the Ventania system (Argentina) and was created to protect one of the last relicts of pampean grasslands. Even though many studies have looked at the vertebrate faunal diversity, biology, and conservation in this Park, few studies have been dedicated to arthropods. Among these, spider...

El Parque Provincial Ernesto Tornquist (PPET) está ubicado en el sistema orográfico de Ventania en el sudoeste de la provincia de Buenos Aires. El PPET constituye un área valiosa, ya que aún preserva el estado natural del pastizal pampeano. Los artrópodos conforman un grupo confiable para realizar estimaciones sobre biodiversidad, ya sea por su abu...

A new genus of Oonopidae, Puan, is described from Argentina. The genus exhibits several features also found in orsolobids, including a well-sclerotized sperm duct and an H-shaped eye pattern. Puan resembles the oonopid genus Unicorn Platnick and Brescovit but differs in male palpal morphology. In addition, males lack the clypeal horn characteristic...

A new species of Eupalaestrus Pocock, 1901 from northern Argentina is described and illustrated. Males and females of Eupalaestrus larae sp. nov. differ from those all other species of the genus by the color with distinct two parallel longitudinal stripes on the femora, patellae, tibiae and one longitudinal stripe reaching half of metatarsi; the pr...

Microstigmatidae are small ground-dwelling and free-living spiders. The present study reports on the copulatory behavior of Xenonemesia platensis Goloboff 1989, constituting the first report on sexual behavior of the Microstigmatidae. Our findings in X. platensis did not show evidence of pheromones associated with silk. The courtship behavioral uni...

The distributional history of the South American endemic genus Cyriocosmus (Araneae, Theraphosidae) was reconstructed, and a spatial analysis of vicariance was conducted. Results obtained with the software RASP (Reconstruct Ancestral State in Phylogenies), suggest that Cyriocosmus originated within an area currently represented by the biogeographic...

We described and analyzed the female sexual response in the tarantula Grammostola vachoni Schiapelli and Gerschman 1961 under three series of 10 experiments each with different situations for the male-female encounters: male free in terrarium but with no access to female; male confined into a glass cup at 30 cm of female burrow and; male confined i...

The diversity, abundance, spatial distribution, and phenology of the mygalomorph spider community in the "Ernesto Tornquist" Strict Nature Reserve were analyzed in this study. Located in southwestern Buenos Aires, Argentina, the Reserve is representative of the Ventania system, which is a sigmoidal mountain belt 180 km in length. This exceptional h...