Neotropical Region Research Papers

DNA sequences of Amblyomma aureolatum (Pallas, 1772) and Amblyomma ovale Koch, 1844 were obtained to determine genetic differences between these tick species. Collections of these species are discussed in relation to distribution and... more

DNA sequences of Amblyomma aureolatum (Pallas, 1772) and Amblyomma ovale Koch, 1844 were obtained to determine genetic differences between these tick species. Collections of these species are discussed in relation to distribution and hosts. Seven ticks collections (four from Brazil, one from Argentina, one from Uruguay and one from USA) house a total of 1272 A. aureolatum (224 males, 251 females, 223 nymphs and 574 larvae) and 1164 A. ovale (535 males, 556 females, 66 nymphs and 7 larvae). The length of the sequenced mitochondrial 16S rRNA gene fragment for A. aureolatum was 370 bp and for A. ovale was 373 bp. The DNA sequence analysis showed a 13.1% difference between the two species. Apart from one male A. ovale found on a toad, all adult ticks were found on mammals. The majority of adult specimens of both tick species were removed from Carnivora (96.1 and 84.3% of A. aureolatum and A. ovale, respectively), especially from dogs A.A. Guglielmone et al. / Veterinary Parasitology 113 (2003) [273][274][275][276][277][278][279][280][281][282][283][284][285][286][287][288] (53.1% of A. aureolatum, and 46.4% of A. ovale). Collections on wild Canidae were higher for A. aureolatum (23.3%) than for A. ovale (7.1%). On the other hand, collections of A. ovale adults on wild Felidae were higher (18.3%) than findings of A. aureolatum (9.2%). The contribution of other mammalian orders as hosts for adults of A. aureolatum and A. ovale was irrelevant, with the exception of Perissodactyla because Tapiridae contributed with 13.0% of the total number of A. ovale adults. Adults of both tick species have been found occasionally on domestic hosts (apart of the dog) and humans. Most immature stages of A. aureolatum were found on Passeriformes birds, while rodents and carnivores were the most common hosts for nymphs and larvae of A. ovale. A. aureolatum has been found restricted to the Neotropical region, covering the eastern area of South America from Uruguay to Surinam, including northeastern Argentina, eastern Paraguay, southeastern Brazil and French Guiana. A. ovale showed a distribution that covers the Neotropical region from central-northern Argentina throughout the Neotropics into the Nearctic region of Mexico with a few records from the USA, also with collection sites in Paraguay

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- by Agustin Estrada-Peña
- •
- 19
  Genetics, Microbiology, Peru, Veterinary

Larvae of almost all of the 5,680 species of the insect order Odonata (dragonflies and damselflies) are dependent on freshwater habitats. Both larvae and adults are predators. The order is relatively well studied, and the actual number of... more

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- by Dennis Paulson
- •
- 14
  Earth Sciences, Conservation, Hydrobiology, Biogeography

Resumen. Los patrones biogeográfi cos de la fl ora mexicana, tanto en número de especies como de endemismos y relaciones entre áreas, han sido explicados a la luz de 3 teorías: 1) la dispersalista, donde México se considera receptor de... more

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- by Isolda Luna Vega
- •
- 12
  Geography, Philosophy, Historical Biogeography, Phytogeography

The family Callichthyidae comprises eight genera of fishes widely distributed across the Neotropical region. In the present study, sequences of the mitochondrial genes 12S rRNA, 16S rRNA, ND4, tRNA His , and tRNA Ser were obtained from 28... more

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- by Roberto E Reis
- •
- 14
  Evolutionary Biology, Genetics, Zoology, Molecular Evolution

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- by Luis Miguel Constantino
- •
- 3
  Entomology, Lepidoptera, Neotropical Region

The precise number of extant fish species remains to be determined. About 28,900 species were listed in FishBase in 2005, but some experts feel that the final total may be considerably higher. Freshwater fishes comprise until now almost... more

The precise number of extant fish species remains to be determined. About 28,900 species were listed in FishBase in 2005, but some experts feel that the final total may be considerably higher. Freshwater fishes comprise until now almost 13,000 species (and 2,513 genera) (including only freshwater and strictly peripheral species), or about 15,000 if all species occurring from fresh to brackishwaters are included. Noteworthy is the fact that the estimated 13,000 strictly freshwater fish species live in lakes and rivers that cover only 1% of the earth’s surface, while the remaining 16,000 species live in salt water covering a full 70%. While freshwater species belong to some 170 families (or 207 if peripheral species are also considered), the bulk of species occur in a relatively few groups: the Characiformes, Cypriniformes, Siluriformes, and Gymnotiformes, the Perciformes (noteably the family Cichlidae), and the Cyprinodontiformes. Biogeographically the distribution of strictly freshwater species and genera are, respectively 4,035 species (705 genera) in the Neotropical region, 2,938 (390 genera) in the Afrotropical, 2,345 (440 genera) in the Oriental, 1,844 (380 genera) in the Palaearctic, 1,411 (298 genera) in the Nearctic, and 261 (94 genera) in the Australian. For each continent, the main characteristics of the ichthyofauna are briefly outlined. At this continental scale, ichthyologists have also attempted to identify ichthyological ‘‘provinces’’ that are regions with a distinctive evolutionary history and hence more or less characteristic biota at the species level. Ichthyoregions are currently identified in each continent, except for Asia. An exceptionally high faunal diversity occurs in ancient lakes, where one of the most noteworthy features is the existence of radiations of species that apparently result from intra-lacustrine speciation. Numerous fish-species flocks have been identified in various ancient lakes that are exceptional natural sites for the study of speciation. The major threats to fish biodiversity are intense and have been relatively well documented: overexploitation, flow modification, destruction of habitats, invasion by exotic species, pollution including the worldwide phenomena of eutrophication and sedimentation, all of which are interacting.

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- by Luis Miguel Constantino
- •
- 7
  Entomology, Conservation Biology, Biology, Biodiversity

RESUMEN Se describen dos nuevas especies de los géneros Limnogonus Stål (Gerrinae) y Rheumatobates Bergroth (Rhagadotarsinae) de Colombia. Limnogonus carinatus sp. nov. se diferencia de otras especies del género por características de los... more

The present work is a synthesis of the Charaxidae family which inhabits Colombia, detailing aspects related to its origin, classification, biology, systematics, speciation, diversity, geographic distribution, as well as the record of the... more

Palabras clave: Anomura, Galatheidae, Chirostylidae, Neotrópico, Langostillas.

Lado, C. & Wrigley de Basanta, D. 2008. A Review of Neotropical Myxomycetes (1828-2008). Anales Jard. Bot. Madrid 65(2): 211-254.

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- by Carlos Lado
- •
- 8
  Plant Biology, Biodiversity, Conservation planning, Tropics

Current and future ecological niche of Leishmaniasis (Kinetoplastida: Trypanosomatidae) in the Neotropical region. The leishmaniasis is a complex disease system, caused by the protozoan parasite Leishmania and transmitted to humans by the... more

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- by Biología Tropical
- •
- 9
  Climate Change, Leishmaniasis, Cambio climático, Ecological niches

The taxonomy of the genus Colobura Billberg, 1820, one of the most common members of the Neotropical lowland forest butterßy fauna, is critically reviewed in light of available information on the morphology of both the immature stages and... more

The Tipulidae s.l.—craneflies—are one of the largest groups of the Diptera containing over 15,270 valid species and subspecies. The immatures of the majority of species live in aquatic or semiaquatic habitats. Some aquatic species live... more

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- by Jon Gelhaus
- •
- 9
  Earth Sciences, Hydrobiology, Biogeography, Biodiversity

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- by Luis Miguel Constantino
- •
- 9
  Entomology, Bioindicators, Biology, Ecology

Limnoperna fortunei, or golden mussel, has invaded aquatic ecosystems in the Americas following it introduction from Southeast Asia. It is not only an aggressive invasive species, it is also a very effective ecosystem engineer, altering... more

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- by Gustavo Darrigran
- •
- 5
  Fisheries, Ecology, Aquaculture, Ecosystem Engineering

The genus Trichoderma has been studied for production of enzymes and other metabolites, as well as for exploitation as effective biological control agents. The biodiversity of Trichoderma has seen relatively limited study over much of the... more

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- by Sergio Orduz
- •
- 24
  Genetics, Microbiology, Carbon, Plant Biology

Aplectana herediaensis n. sp. (Ascaridida: Cosmocercidae) from the large intestines of Lepidophyma flavimaculatum (Squamata: Xantusiidae) is described and illustrated. Aplectana herediaensis represents the 42 nd species assigned to the... more

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- by Charles Bursey
- •
- 5
  Parasitology, Papua New Guinea, Biological Sciences, Lizards

The Neotropical leafhopper Aurigoniella dutrai n. gen., n. sp., from Minas Gerais State, Brazil, is described and illustrated. The new species is placed in the nominate tribe of the subfamily Cicadellinae. The new genus can be... more

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- by Daniela Takiya
- •
- 6
  Zoology, Zoologia, Minas Gerais, Neotropical Region

Among the subfamilies of Chrysomelidae, Cassidinae sensu lato (s.l.) includes 6000 species distributed in 43 tribes. Approximately 100 of these species were cytogenetically analyzed and most of them presented 2n = 18 = 16 + Xy p , which... more

Among the subfamilies of Chrysomelidae, Cassidinae sensu lato (s.l.) includes 6000 species distributed in 43 tribes. Approximately 100 of these species were cytogenetically analyzed and most of them presented 2n = 18 = 16 + Xy p , which was smaller than 2n = 20 = 18 + Xy p considered basal for Polyphaga. However, some groups of species presented maintenance of the basal diploid number and others showed increase in this number. Certain species of the latter group also exhibited variation in the type of sex chromosome system (SCS). Considering the recent taxonomic revision accomplished for the Cassidinae s.l. species, the existence of phylogenetic relationship for some species of this subfamily, the high diversity of species of this group in the Neotropical region, and the low number of Cassidinae s.l. species karyotyped so far, the aim of the present work was to establish the main mechanisms involved in the karyotype evolution of this subfamily through the study of seven species of the Brazilian fauna and overview of the cytogenetic data. The individuals were collected in southeast and south of Brazil. The chromosomal preparations obtained from embryo and testes of adult males were stained with Giemsa solution. The species Agroiconota inedita (2n = 42 = 40 + Xy p ), Charidotella (s.str.) immaculata (2n = 22 = 20 + Xy p ), Charidotella (s.str.) sexpunctata (2n = 22 = 20 + Xy p ), and Stolas chalybaea (2n = 24 = 22 + Xy p ) revealed diploid number higher than that established as basal for Polyphaga and biarmed chromosomes. The karyotype of Cteisella confusa, Deloyala cruciata, and Metriona elatior showed the chromosomal formulae 2n = 18 = 16 + Xy p considered modal for Cassidinae s.l. and biarmed chromosomes. The seven species exhibited easily identified sex chromosomes due to their size and/or morphology. The analysis of meiotic cells of all the species showed pachytenes with a positively heteropycnotic block probably corresponding to the sex chromosomes; diplotenes with a high number of bivalents with two chiasmata and sex chromosomes in a parachute configuration, and metaphases II that confirmed the chromosomal morphology, the type of SCS, and the regular segregation of all chromosomes. The data regarding to the number and morphology of the chromosomes, their behaviour during meiosis, and type of SCS were inedit for the majority of these species. In relation to the all Cassidinae s.l. species that presented SCS of the Xy p type, A. inedita was that with the highest diploid number. Furthermore, this work reported for the first time the cytogenetic information of representatives of the genera Cteisella and Metriona. Taking into account the phylogenetic and cytogenetic data of Cassidinae s.l. species, the karyotype differentiation of this group seems to have occurred from the basal karyotype of Polyphaga by decrease in the chromosome number and subsequent increase in this number. Pericentric inversion, centric fusion and fission seem to have been the main mechanisms that promoted the evolution of the autosomes. However, in the sex chromosome evolution, the mechanisms involved were centric fission and/or chromosomal translocation. ß

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- by Flávia Fernandes
- •
- 23
  Materials Engineering, Condensed Matter Physics, Brazil, Evolution

In the present study, seven new species of Riodinidae from Colombia are described based on material deposited in the authors' collections and by comparative analysis of literature and revision of other collections in Colombia: Colaciticus... more

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- by Luis Miguel Constantino
- •
- 6
  Entomology, Colombia, Lepidoptera, Systematic Entomology

We present a checklist of feather mites known from native birds in Brazil. The list was compiled from a survey of Brazilian records published in indexing databases (e.g. Zoological Records) and from the available literature. To date, 185... more

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- by Michel Valim
- •
- 7
  Zoology, Taxonomy, Biodiversity, Acarology

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- by Hugo Lopez
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- 12
  Earth Sciences, Limnology, Biogeography, Biological Sciences

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with... more

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- by Yasmin Barbosa
- •
- 17
  Demography, Ecotoxicology, Fertility, Biological Control

Three new species from the Neotropical region are described: Ancistroceroides soikai Grandinete & Carpenter, sp. nov. (Costa Rica, Paraguay); Cephalastor huautla Grandinete & Carpenter, sp. nov. (Mexico), and Symmorphus centralis... more

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- by James M Carpenter and +1
  Fernando Noll
- •
- 5
  Insect Taxonomy, Faunistics, Neotropical Region, Potter wasps

Biodiversity changes in space and time generate complex gradients. These gradients affect community structures, generating beta diversity replacement patterns. The two main patterns of spatial replacement are turnover and nestedness.... more

Biodiversity changes in space and time generate complex gradients. These gradients affect community structures, generating beta diversity replacement patterns. The two main patterns of spatial replacement are turnover and nestedness. However, there are very few studies that analyze diversity changes along environmental gradients in the Colombian Caribbean region. In an attempt to understand these spatial changes, a complete sampling was conducted in five Colombian Caribbean ecoregions (Golfo de Morrosquillo, Montes de María, Sabanas, San Jorge, and La Mojana) using dung beetles as an indicator. In each region, a linear transect with 20 pitfall traps baited with dung was established. Differences in abundance, richness, Shannon-index, evenness, and beta diversity between ecoregions were evaluated. A total of 923 individuals belonging to 27 species were collected. The tribe Deltochilini and the genus Canthon were the most diverse. The most abundant species was Silvicanthon aequinoctialis. Significant differences were found in the parameters measured between the ecoregions. A Beta diversity index established a clear spatial pattern demonstrating high turnover with low nestedness values. The Montes de María ecoregion has the highest diversity, which was linked with the maintenance of conserved forest fragments. It is advisable to generate conservation strategies and the designation of a new National Natural Park for Montes de María in order to stop the negative impact caused by agricultural and cattle farming expansion in the region. This study represents the first effort to understand dung beetle spatial patterns within the ecoregions of the Colombian Caribbean region through connecting environmental gradients and spatial diversity dynamics. Resumen: La biodiversidad cambia en el espacio-tiempo generando gradientes complejos. Estos gradientes afectan la estructura de las comunidades creando dos posibles patrones de recambio espacial, reemplazo o anidamiento. Existen pocos estudios que busquen analizar los cambios de la diversidad a lo largo de gradientes ambientales en la región Caribe de Colombia. Buscando entender estos cambios, se realizó un muestreo en cinco ecorregiones del Caribe colombiano (Golfo de Morrosquillo, Montes de María, Sabanas, San Jorge y La Mojana) usando a los escarabajos coprófagos como un grupo bioindicador. En cada región se estableció un transecto lineal con 20 trampas de caída cebadas con excremento. Se evaluaron las diferencias en la abundancia, riqueza, Shannon-índice, equidad y grupos funcionales entre ecorregiones y condiciones ambientales. Un total de 923 individuos pertenecientes a 27 especies fue recolectado. La tribu Deltochilini y el género Canthon fueron los más diversos. La especie más abundante fue Silvicanthon aequinoctialis. Se encontraron diferencias significativas en los parámetros medidos entre las ecorregiones. La diversidad Beta presenta un claro patrón espacial demostrando un alto recambio y un bajo anidamiento. Los Montes de María presentaron la mayor diversidad, asociada con la conservación de fragmentos de bosque. Es fundamental generar estrategias de conservación y crear un nuevo Parque Nacional Natural para los Montes de María, previniendo el impacto negativo causado por la expansión de la frontera agrícola y ganadera. Finalmente, este estudio representa un primer esfuerzo para entender los patrones espaciales de los escarabajos coprófagos en el Caribe colombiano, relacionando los gradientes ambientales con la dinámica espacial de la diversidad.

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- by Jorge Ari Noriega, PhD and +3
  Yina Carmela Amell Caez
  José Daniel Monroy González
  Hector Garcia
- •
- 6
  Diversity, Bioindicators, Beta-diversity, Coleoptera

A new species of the Forcipomyia (Forcipomyia) argenteola group, F. (F.) donatoi, is described and illustrated from males and females collected in several localities of northern Argentina and in Paraguay. The new species is compared with... more

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- by Pablo Marino
- •
- 7
  South America, Key, Neotropical Region, New record

Pseudothelphusidae is a well diversified group of Neotropical freshwater crabs currently comprising 40 genera and at least 255 species and subspecies. The biology of these crabs has been an active field of research in the last 20 years.... more

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- by Célio Magalhães
- •
- 2
  Zoology, Neotropical Region

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- by Cleide Costa
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- 4
  Zoology, Trinidad and Tobago, Neotropical Region, New Genus

Conservation planning analyses show a striking progression from endeavors targeted at single species or at individual sites, to the systematic assessment of entire taxa at large scales. These, in turn, inform wide-reaching conservation... more

Citation: del Río MG, Lanteri AA (2013) Taxonomic revision of the genus Stenocyphus Marshall (Coleoptera, Curculionidae) from Brazil. ZooKeys 357: 29-43.

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- by Analia Lanteri
- •
- 5
  Zoology, Systematics, New Species, Weevils

Reservoirs have been built in almost all of the hydrographic basins of Brazil. Their purposes include water supply for cities, irrigation and mainly, generation of electricity. There are more than 700 large dams and associated reservoirs... more

Reservoirs have been built in almost all of the hydrographic basins of Brazil. Their purposes include water supply for cities, irrigation and mainly, generation of electricity. There are more than 700 large dams and associated reservoirs in the large rivers of the country. These reservoirs favor local and regional economic development, but they also bring serious and irreversible alterations in the natural hydrologic regime of rivers, affecting habitat quality and the dynamics of the biota. In the impounded area, the main impact is the change from lotic to lentic water, which influences aquatic fauna, including fishes. Impacts of reservoirs present relevant spatiotemporal variations. Immediately after reservoir formation, fish species richness usually increases due to incorporation of surrounding habitats, but richness decreases as reservoirs age. However, impacts downstream of dams appear to be similar or stronger than those that occur within the reservoir. Dams promote discharge control, altering the seasonal cycles of floods. These effects are augmented when dams are constructed in cascades. Therefore, dams profoundly influence composition and structure of fish assemblages. Most affected species are the rheophilics and long distance migratory that require distinct habitats to fulfill their life cycles. Populations of migratory species may collapse or even disappear in intensely regulated stretches. Management actions taken to minimize impacts of dams in Brazil historically considered construction of fish passages, fishery control and stocking. The results of these actions are questionable and/or with clear failures. In this paper, we give emphasis to the Paraná River basin, the most affected by dams in Brazil. We describe some patterns in the alteration and decline in fish diversity in areas influenced by dams. We also discuss negative consequences in the fishery and ecosystems functioning. Finally, we argue the relevance and the success of the management actions taken and present some suggestions to improve conservation of the ichthyofauna in South American basins influenced by dams.

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- by Angelo Antonio Agostinho
- •
- 16
  Reproduction, Fisheries, Brazil, Population Dynamics

Herein, we report observations about spider predation on anurans (adults and juveniles) in Central Amazonia and a literature review of spiders preying on amphibians in the Neotropical zoogeographic realm. We conducted field observations... more

Chironomids living inside freshwater sponges are scarcely known, particularly in the Neotropical region where most of them are to be described. Here, male and female adults, pupa and 4th instar larva of Xenochironomus ceciliae sp. n.,... more

Species of Cerambycidae were inventoried in an area of Caatinga (dryland) vegetation in the municipality of Aracatu, Bahia State, Brazil, between August/2012 and July/2013. The insects were collected using light traps, active searches,... more

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- by André da Silva Ferreira and +1
  Agda Rocha
- •
- 4
  Inventory, Neotropical Region, Cerambycidae, Semiárido

New World bats play a significant role in ecosystem functioning and are imperative for maintaining environmental services. Nevertheless, human-caused environmental changes are jeopardizing bat communities, which results in the loss of... more

New World bats play a significant role in ecosystem functioning and are imperative for maintaining environmental services. Nevertheless, human-caused environmental changes are jeopardizing bat communities, which results in the loss of functional roles provided by them. It is important, therefore, to assess ecological processes performed by bats in the Neotropics to define priorities in further research for better conservation planning. In this systematic review, I identify general trends, advances, bias, and knowledge gaps in bat-mediated ecological processes across Neotropical ecosystems. I have conducted an extensive search on Google Scholar, Scopus, Web of Science, and Bat Eco–Interactions Database resulting in 538 references, of which 185 papers were included in the review. The papers were published in 76 peer-reviewed journals, with the highest peak between 2006-2010. From the six biomes recorded, Moist broadleaf tropical forest was the most researched, contrary to
Montane biomes (>2000 m), where few studies have been conducted. Seed dispersal was the process with more studies (44%), followed by pollination (38%), nutrient cycling (10%), and arthropod suppression (8%). Seed dispersal and pollination displayed large bias on specific bat-plant systems (Artibeus-Ficus, Sturnira-Solanum, Carollia-Piper, Pachycereeae tribe-Leptonycteris) and ecoregions (Ithsmian-Atlantic moist forest, Cerrado, Tehuacán Valley matorral), thus being important to explore other bat and plant species as well as other ecosystems. Arthropod suppression and nutrient cycling were largely overlooked despite constituting essential functions in ecosystem resilience; particularly, more research is needed to know cascading effects on plant fitness in different agroforestry systems, but also is key the understanding of how bats can be pivotal mobile links in terrestrial ecosystems and cave environments. I highlight the importance to consider bats with multiple roles and functional trait-based approach to gain a comprehensive understanding of their functionality. Even though functional studies have increased in the last two decades, several aspects of bat roles are still obscured,
and is necessary to keep evaluating their ecological and economic importance to provide useful information for major decision-makings in Neotropical ecosystems’ conservation. Bat extirpations are likely to affect their ecological roles, therefore, mitigating major threats of bats are urgently needed to sustain ecosystem integrity in the Neotropics.

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- by Dennis Castillo-Figueroa
- •
- 8
  Seed Dispersal, Pollination, Chiroptera, Nutrient Cycling

The persistence of Trypanosoma cruzi tissue forms was detected in the myocardium of seropositive individuals clinically diagnosed as chronic chagasic patients following endomyocardial biopsies (EMBs) processed by immunohistochemical... more

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- by Néstor González
- •
- 21
  Parasitology, Immunology, Molecular Biology, Statistical Analysis

The morphology of two Neotropical oribatid mites new to Ecuador, Nothrus niedbalai sp. n. and Nothrus becki Balogh et Mahunka, 1981, is described and illustrated. A comparison with similar species is included. N. niedbalai sp. n. is... more

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- by Małgorzata Łochyńska and +1
  Ziemowit Olszanowski
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- 5
  Zoology, Body Size, Neotropical Region, Secondary Forest

A new Hypoptopomatinae, Corumbataia britskii, is described based on specimens recently collected in a tributary of the upper Rio Paraná basin, Mato Grosso do Sul State, Brazil. Corumbataia britskii differs from its congeners by having a... more

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- by Katiane Ferreira
- •
- 2
  South America, Neotropical Region

Cecidomyiidae galls commonly present a zonation of tissues with lignified cell layers externally limiting a reserve tissue and internally limiting a specialized nutritive tissue next to the larval chamber. The cytological aspects of this... more

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- by Rosy dos Santos Isaias
- •
- 9
  Plant Biology, Immunohistochemistry, Neotropical Region, Larva

Groundbreaking studies of phlebotomine sand fly populations in Assis Brasil, State of Acre, Brazil, resulted in the collection of 13 new records of phlebotomine sand flies and one previously undescribed species. Lutzomyia naiffi sp. nov.... more

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- by Felipe Pessoa
- •
- 2
  Taxonomy, Neotropical Region

In this study, the diversity of Ephemeroptera, Plecoptera, Trichoptera and Coleoptera communities was surveyed in the Toropi River basin, a watershed localized in a slope region, in southernmost Brazil. The influence of some local abiotic... more

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- by Bruna Braun
- •
- 6
  Trichoptera, Aquatic Insects, Neotropical Region, Streams

A small collection of freshwater crabs from eastern Panamá revealed a new species of pseudothelphusid crab, Potamocarcinus darienensis n. sp., which is described and illustrated. The new species is characterized by an unusual arrangement... more

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- by Célio Magalhães
- •
- 5
  Carcinology, Panama, Freshwater crabs, Neotropical Region

The New World screwworm Cochliomyia hominivorax (Coquerel) is an important parasitic insect pest in Neotropical regions. NewWorld screwworm myiasis is caused by the larval stage of the fly infesting tissues of warm-blooded vertebrates.... more

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- by Tatiana Torres
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- 10
  Mitochondrial DNA, New World, South America, Neotropical Region

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- by Dan Polhemus
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- 5
  World War II, Neotropical Region, New Guinea, Species Description

We report the migration of Manayunkia speciosa from its distribution in North America into the Neotropical Region (Argentina). We collected specimens from November 2007 to March 2009 in the lower Uruguay River-at 33°5.01 0 S 58°12 0 W,... more

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- by Lau Armz and +1
  Alberto Capítulo
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- 8
  Biological invasions, Biological Sciences, Environmental Sciences, South America

Due to its necrophagy, the Neotropical beetle Oxelytrum discicolle (Brullé, 1840) is found in association with human corpses. Its biology can provide important information to determine the postmortem interval (PMI). We studied the life... more

Neotropical Region

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