RESUMEN
Hepatitis E virus (HEV) infection is a common cause of acute viral hepatitis in tropical regions. In Brazil, HEV G3 is the only genotype detected to date. Reports on HEV prevalence are heterogeneous. We aimed to compare the prevalence of anti-HEV among three populations living in the Brazilian Amazon basin. Two cross-sectional studies were conducted in urban, rural, and Yanomami indigenous areas. Plasma samples from 428 indigenous and 383 non-indigenous subjects were tested for anti-HEV IgG using enzyme-linked immunosorbent assays. The overall prevalence of anti-HEV was 6.8% (95%CI: 5.25-8.72), with 2.8% (12/428) found in the Yanomami areas, 3% (3/101) in an urban area, and 14.2% (40/282) in a rural area. Multivariate logistic analysis indicated that patients aged 31-45 years or ≥46 years are more likely to present anti-HEV positivity, with a respective aOR of 2.76 (95%CI: 1.09-7.5) and 4.27 (95%CI: 1.58-12.35). Furthermore, residence in a rural area (aOR: 7.67; 95%CI: 2.50-33.67) represents a relevant risk factor for HEV infection. Additional studies detecting HEV RNA in fecal samples from both humans and potential animal reservoirs are necessary to comprehensively identify risk factors associated with HEV exposure.
RESUMEN
BACKGROUND: Viral hepatitis is a significant health concern among indigenous population in the Americas. In Brazil, reports find high endemicity of HBV and HDV infections has been reported in several indigenous groups. However, few studies have documented the prevalence of HBV, HCV and HDV in the Yanomami. In this study, the prevalence of hepatitis B, C, and D serological markers and potential risk factors were investigated to provide guidance for the development of strategies aimed at reducing viral transmission in the Yanomami indigenous villages. METHODS: This cross-sectional study was carried out in March 2015 and included 430 individuals from four Yanomami villages: Alapusi (n = 78), Castanha/Ahima (n = 126), Gasolina (n = 105), and Taibrapa (n = 121). A rapid test was used for detection of HBsAg and anti-HCV and chemiluminescent immunoassay for anti-HBs, anti-HBc, and anti-HDV antibodies. RESULTS: HBsAg, anti-HBc, and anti-HBs were detected in 8.8, 45.5, and 49.4% of the participants, respectively. The estimated HBV status: current infection 9.6% (38/395); resolved infection 43.3% (171/395); vaccine immunity 20.5% (81/395), and susceptible to HBV 26.6% (105/395). Gasolina presented the lowest prevalence of HBV infection (6.5%) and the highest prevalence of vaccine immunity (26.9%). Children < 15 years old were highly susceptible to infection, as 53.1% did not have antibodies to HBV, while more than 80% of individuals over 45 years of age had been exposed to HBV. The markers for HDV were founded among 12.5% (4/32) of the HBsAg carriers. Anti-HCV was identified in all villages, with the highest prevalence in Alapusi (5.1%). Possible risk factors such as the use of piercings, tattoos, and contact with prospectors showed no statistical difference between the groups. CONCLUSIONS: Viral hepatitis B and serological markers for HCV and HDV were found to be widely distributed among the Yanomami indigenous community, while the prevalence of vaccine immunity to HBV was low. This finding reinforces the importance of promoting systematized diagnostic and vaccination strategies in indigenous communities. Our data confirm that isolated and difficult-to-reach indigenous communities lack appropriate access to diagnosis, treatment, and vaccination.
Asunto(s)
Hepatitis B , Hepatitis C , Hepatitis Viral Humana , Vacunas , Niño , Humanos , Adolescente , Antígenos de Superficie de la Hepatitis B , Estudios Seroepidemiológicos , Estudios Transversales , Hepatitis B/epidemiología , Hepatitis B/diagnóstico , Anticuerpos contra la Hepatitis B , Virus de la Hepatitis B , Hepatitis Viral Humana/epidemiología , Anticuerpos contra la Hepatitis C , Prevalencia , Hepatitis C/epidemiologíaRESUMEN
The Brazilian Amazon rainforest region has a significant prevalence of malarial and intestinal parasitic infections in indigenous populations, accounting for a disproportionate burden. Thus, a cross-sectional study was conducted to assess the prevalence and association between malarial and intestinal protozoan and helminth infections in four remote indigenous villages in the Brazilian Amazon Forest. A total of 430 individuals participated in the study, and Plasmodium infections were diagnosed by examination of thick blood smears and PCR. Stool samples 295 individuals (69%) were examined by direct smear and the Kato-Katz technique. The overall prevalence of malaria, intestinal protozoan infection, and intestinal helminth infection was 14.2%, 100%, and 39.3%, respectively. Polyparasitism was predominant (83.7%), and most infected individuals had at least two or more different species of intestinal protozoan and/or helminth parasites. The prevalence of co-infection was 49.5%, and in individuals with intestinal protozoa and helminth infections (34%), Entamoeba. coli, Entamoeba histolytica, and Ascaris lumbricoides were the most common parasites. In individuals with malaria and protozoa infections (10.2%), P. vivax, E. coli, and E. histolytica predominated, and in individuals with malaria, protozoa, and helminth infections (5.4%). P. vivax, E. coli, E. histolytica, and A. lumbricoides predominated. Intestinal polyparasitism was common in the study population, and the presence of helminths was associated with an increased number of intestinal parasitic species. However, Plasmodium infections were neither a risk nor a protective factor for helminth infections; the same was true for helminth infections in relation to Plasmodium. The high prevalence of intestinal polyparasitism with Plasmodium co-infections highlights the need for combining strategies that may help control both malaria and intestinal parasite and generate a health approach aligned with indigenous perspectives.
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Coinfección , Helmintiasis , Helmintos , Parasitosis Intestinales , Enfermedades Intestinales , Malaria Vivax , Malaria , Animales , Humanos , Coinfección/complicaciones , Estudios Transversales , Brasil/epidemiología , Bosque Lluvioso , Escherichia coli , Parasitosis Intestinales/complicaciones , Parasitosis Intestinales/epidemiología , Parasitosis Intestinales/parasitología , Helmintiasis/complicaciones , Helmintiasis/epidemiología , Malaria/complicaciones , Malaria/epidemiología , Pueblos Indígenas , Prevalencia , Heces/parasitologíaRESUMEN
Blood samples from Mansonella ozzardi infected volunteers from Vila Antimary (Amazonas State) were processed and a protocol to isolate and prepare microfilariae was carried out in order to perform Scanning Electron Microscopy (SEM) analysis. Data obtained from ultrastructure showed some undescribed structural points of the parasite such as a dimple in the anterior end of the larva and small points orifice-like that may be related to amphidial structures or simply pores. Another interesting feature was the tip of the tail which is very similar to that found in the rodent parasite Dunnifilaria meningica
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Parásitos , Microscopía Electrónica de Rastreo , Larva , Mansonella , MicrofilariasRESUMEN
The effectiveness of the MosqTent® trap was evaluated in endemic area to onchocerciasis in Brazil. This study seeks to provide subsidies for the monitoring of the onchocerciasis transmission in the country. The study was carried out at the Homoxi and Thirei villages, located in the Yanomami Indigenous Land, in the state of Roraima. This area presents hyperendemicity, high blackflies densities, large population migrations and mining activities. The Homoxi and Thirei villages are assisted by the Brazilian Ministry of Health. To conduct the present study, the village leader, health leaders and the Brazilian Ethics Committee were consulted. Blackflies captures were carried out simultaneously at the Homoxi and Thirei, using systematized methods to allow for comparisons between the traditional Human Landing Catch (HLC) and HLC protected by the MosqTent®. The female blackflies were captured at two equidistant capture stations per locality, by two collectors per station, for five consecutive days. Individuals captured by interval/station/day were counted, identified and maintained at -20°C. The underlying probability distributions and the differences between the methods for the independent sample data were verified in a comparative statistical analysis between the use of the MosqTent® and the HLC. A total of 10,855 antropophilic blackflies were captured by both methodologies. A total of 7,367 (67.87%) blackflies belonging to seven species were captured by MosqTent® -Simulium incrustatum s.l (99.06%); S. guianense s.l (0.74%), S. oyapockense s.l (0.01%), S. exiguum (0.10%), S. metallicum (0.05%), S. ochraceum (0.03%) and S. minusculum s.l (0.01%). Moreover, 3,488 (32.14%) blackflies belonging to four species were captured by HLC-S. incrustatum s.l (98.33%); S. guianense s.l (1.38%), S. oyapockense s.l (0.26%) and S. metallicum (0.03%). The MosqTent® was more effective and efficient when compared to HLC. When comparing total blackflies captured/day, the MosqTent® was more efficient than HLC (p = 0.031) with a means of 799.4 blackflies/day versus 217.6 blackflies/day by HLC. The results demonstrated improved performance and high reliability of the MosqTent® compared to the traditional HLC method.
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Insectos Vectores , Oncocercosis/epidemiología , Simuliidae , Animales , Brasil/epidemiología , Onchocerca volvulus , Oncocercosis/transmisión , Vigilancia de la Población , Reproducibilidad de los ResultadosRESUMEN
INTRODUCTION:: This study analyzed blackfly awareness and perceptions of health education practices for blackfly control among vulnerable populations in Brazil. METHODS:: An exploratory descriptive quantitative research analysis was performed to investigate and analyze the awareness of and potential participation in blackfly control measures by vulnerable populations. RESULTS:: Countryside resident participants (n = 24/38; 63.2% of the total sample) reported that blackflies were an obstacle to the performance of their work activities. CONCLUSIONS:: Blackflies are a public health problem, and actions for blackfly control have been carried out without social participation or educational health practices that involve proper community knowledge.
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Educación en Salud , Conocimientos, Actitudes y Práctica en Salud , Control de Mosquitos , Simuliidae , Adulto , Animales , Brasil , Femenino , Humanos , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios , Adulto JovenRESUMEN
Abstract INTRODUCTION: This study analyzed blackfly awareness and perceptions of health education practices for blackfly control among vulnerable populations in Brazil. METHODS: An exploratory descriptive quantitative research analysis was performed to investigate and analyze the awareness of and potential participation in blackfly control measures by vulnerable populations. RESULTS: Countryside resident participants (n = 24/38; 63.2% of the total sample) reported that blackflies were an obstacle to the performance of their work activities. CONCLUSIONS: Blackflies are a public health problem, and actions for blackfly control have been carried out without social participation or educational health practices that involve proper community knowledge.
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Humanos , Animales , Masculino , Femenino , Adulto , Adulto Joven , Simuliidae , Conocimientos, Actitudes y Práctica en Salud , Control de Mosquitos , Educación en Salud , Brasil , Encuestas y Cuestionarios , Persona de Mediana EdadRESUMEN
In this paper, the overall morphological differences between populations of Simulium subpallidum Lutz, 1909 are studied. Several studies found in the literature point to a relationship between the labral fans and body size and the habitat where blackfly larvae occur. However, other characteristics potentially related to the microhabitat, such as abdominal hook circlet morphology, which is used for larvae to fix themselves in the substratum, and thoracic prolegs morphology, which help larvae move in the substratum, were analyzed in three different populations of S. subpallidum, one of which occupied a faster flow. The results suggest phenotypic plasticity in S. subpallidum and a tendency toward larger structures in faster flows.
RESUMEN
We investigated the spatial and temporal distribution of blackfly larvae on a mesohabitat scale atfour different breeding sites in the Brazilian savannah "Cerrado." A total of 2,385 larvae of 12 different species were collected, and three of the sampling sites revealedspecies richness and diversity peaks in April. A principal components analysis was performed to reduce abiotic data into a smaller set of independent variables, such as precipitation and river size, and subsequent linear regressions showed that Simulium subpallidum was positively correlated with precipitation. This species, along with S. nigrimanum, was negatively correlated withriver size, whereasS. perflavum was negatively correlated with precipitation. Beta diversity was negatively correlated withprecipitation, and black fly taxocenoses were markedly different between wet and dry seasons, as shown through nonmetric multidimensional scaling, suggesting that precipitation playsa major role in structuring these communities, probably because of enhanced drift and the dendritic nature of lotic metacommunities.
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Simuliidae/fisiología , Animales , Brasil , Larva/fisiología , Estaciones del AñoRESUMEN
Mansonella ozzardi infections are common in the riverside communities along the Solimões, Negro and Purus Rivers in the state of Amazonas (AM). However, little is known about the presence of this parasite in communities located in regions bordering AM and the state of Acre. The prevalence rate of M. ozzardi infections was determined in blood samples from volunteers according to the Knott method. A total of 355 volunteers from six riverine communities were enrolled in the study and 65 (18.3%) were found to be infected with M. ozzardi. As expected, most of the infections (25%) occurred in individuals involved in agriculture, cattle rearing and fishing and an age/sex group analysis revealed that the prevalence increased beginning in the 40-50-years-of-age group and reached 33% in both sexes in individuals over 50 years of age. Based on the described symptomatology, articular pain and headache were found to be significantly higher among infected individuals (56 and 65% prevalence, respectively, p < 0.05). Sera from volunteers were subjected to ELISA using a cocktail of recombinant proteins from Onchocerca volvulus to evaluate the specificity of the test in an endemic M. ozzardi region. No cross-reactions between M. ozzardi-infected individuals and recombinant O. volvulus proteins were detected, thus providing information on the secure use of this particular cocktail in areas where these parasites are sympatric.
Asunto(s)
Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Animales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Mansonella/aislamiento & purificación , Mansoneliasis/epidemiología , Brasil/epidemiología , Ensayo de Inmunoadsorción Enzimática , Insectos Vectores/parasitología , Mansoneliasis/sangre , Mansoneliasis/transmisión , Onchocerca volvulus/genética , Prevalencia , Proteínas Recombinantes , Población Rural/estadística & datos numéricos , Evaluación de Síntomas , Simuliidae/parasitologíaRESUMEN
To determine the influence of onchocercal eye disease on the intraocular pressure of the Yanomami Tribe Aratha-ú of Roraima State, Brazil, considered endemic for onchocerciasis, a total of 86 patients were submitted to an ophthalmologic exam that included external examination, slit lamp examination, intraocular pressure measurement, and a fundus ophthalmoscope examination. A high prevalence of onchocerciasis-related eye lesions was encountered in 68.6% of the patients. Punctate keratitis and microfilariae in the anterior chamber were found in â¼28%. The mean of intraocular eye pressure found was 10.47 mm of Hg.
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Oncocercosis Ocular/epidemiología , Oncocercosis Ocular/patología , Adolescente , Adulto , Anciano , Antihelmínticos/uso terapéutico , Brasil/epidemiología , Niño , Femenino , Humanos , Presión Intraocular , Ivermectina/uso terapéutico , Masculino , Persona de Mediana Edad , Oncocercosis Ocular/tratamiento farmacológico , Grupos de Población , Adulto JovenRESUMEN
Mansonella ozzardi infections are common in the riverside communities along the Solimões, Negro and Purus Rivers in the state of Amazonas (AM). However, little is known about the presence of this parasite in communities located in regions bordering AM and the state of Acre. The prevalence rate of M. ozzardi infections was determined in blood samples from volunteers according to the Knott method. A total of 355 volunteers from six riverine communities were enrolled in the study and 65 (18.3%) were found to be infected with M. ozzardi. As expected, most of the infections (25%) occurred in individuals involved in agriculture, cattle rearing and fishing and an age/sex group analysis revealed that the prevalence increased beginning in the 40-50-years-of-age group and reached 33% in both sexes in individuals over 50 years of age. Based on the described symptomatology, articular pain and headache were found to be significantly higher among infected individuals (56 and 65% prevalence, respectively, p < 0.05). Sera from volunteers were subjected to ELISA using a cocktail of recombinant proteins from Onchocerca volvulus to evaluate the specificity of the test in an endemic M. ozzardi region. No cross-reactions between M. ozzardi-infected individuals and recombinant O. volvulus proteins were detected, thus providing information on the secure use of this particular cocktail in areas where these parasites are sympatric.
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Mansonella/aislamiento & purificación , Mansoneliasis/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Animales , Brasil/epidemiología , Ensayo de Inmunoadsorción Enzimática , Femenino , Humanos , Insectos Vectores/parasitología , Masculino , Mansoneliasis/sangre , Mansoneliasis/transmisión , Persona de Mediana Edad , Onchocerca volvulus/genética , Prevalencia , Proteínas Recombinantes , Población Rural/estadística & datos numéricos , Simuliidae/parasitología , Evaluación de Síntomas , Adulto JovenRESUMEN
A new species of Simuliidae, Simulium (Chirostilbia) brunnescens, was discovered at Chapada dos Guimarães, state of Mato Grosso, Brazil, and nearby municipalities (Paranatinga, Rosário do Oeste and Nobres). This species is described here based on the adults, pupae and larvae. This species is closely related to Simulium (C.) subpallidum Lutz, but could be differentiated in all stages: females, leg colour pattern and frontal dilatation size; males, gonostyle shape; pupae, number of gill filaments; larvae, body size and colour, postgenal cleft, ratio between antenna and stalk of labral fan.
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Simuliidae/anatomía & histología , Simuliidae/clasificación , Animales , Brasil , Humanos , Larva/anatomía & histología , Masculino , Pupa/anatomía & histologíaRESUMEN
A new species of Simuliidae, Simulium (Chirostilbia) brunnescens, was discovered at Chapada dos Guimarães, state of Mato Grosso, Brazil, and nearby municipalities (Paranatinga, Rosário do Oeste and Nobres). This species is described here based on the adults, pupae and larvae. This species is closely related to Simulium (C.) subpallidum Lutz, but could be differentiated in all stages: females, leg colour pattern and frontal dilatation size; males, gonostyle shape; pupae, number of gill filaments; larvae, body size and colour, postgenal cleft, ratio between antenna and stalk of labral fan.
Asunto(s)
Animales , Humanos , Masculino , Simuliidae/anatomía & histología , Simuliidae/clasificación , Brasil , Larva/anatomía & histología , Pupa/anatomía & histologíaRESUMEN
We describe the abiotic factors affecting the distribution of black flies at a microhabitat scale, rather than at the regional scale usually present in the literature on the Neotropics. Black fly larvae were sampled from the Tocantins River and three tributaries, located in the Brazilian savanna (state of Tocantins, Brazil) during six bi-monthly sampling periods from October 2004-August 2005. At each sampling site, 15 random quadrats (30 x 30 cm) were sampled each period and for each quadrat were determined mean water velocity, predominant substrate type (rocks, riffle litter or riparian vegetation) and depth detrended correspondence analysis (DCA) was used to determine associations with current velocity, whereas correspondence analysis (CA) was used to estimate site specific current velocity associations. Canonical correspondence analysis (CCA) was used to identify general microhabitat associations. The CCA showed that most species had a trend towards riffle litter, except for Simulium nigrimanum associated with rocky substrate and Simulium cuasiexiguum associated with riparian vegetation. The DCA showed a well defined pattern of water velocity associations. The CA revealed that the species showed different speed associations from one site to another, suggesting different competitive pressures resulting in the occurrence of different realized niches.
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Animales , Biodiversidad , Simuliidae/clasificación , Brasil , Densidad de Población , Dinámica Poblacional , Ríos , Clima TropicalRESUMEN
We describe the abiotic factors affecting the distribution of black flies at a microhabitat scale, rather than at the regional scale usually present in the literature on the Neotropics. Black fly larvae were sampled from the Tocantins River and three tributaries, located in the Brazilian savanna (state of Tocantins, Brazil) during six bi-monthly sampling periods from October 2004-August 2005. At each sampling site, 15 random quadrats (30 x 30 cm) were sampled each period and for each quadrat were determined mean water velocity, predominant substrate type (rocks, riffle litter or riparian vegetation) and depth detrended correspondence analysis (DCA) was used to determine associations with current velocity, whereas correspondence analysis (CA) was used to estimate site specific current velocity associations. Canonical correspondence analysis (CCA) was used to identify general microhabitat associations. The CCA showed that most species had a trend towards riffle litter, except for Simulium nigrimanum associated with rocky substrate and Simulium cuasiexiguum associated with riparian vegetation. The DCA showed a well defined pattern of water velocity associations. The CA revealed that the species showed different speed associations from one site to another, suggesting different competitive pressures resulting in the occurrence of different realized niches.
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Biodiversidad , Simuliidae/clasificación , Animales , Brasil , Densidad de Población , Dinámica Poblacional , Ríos , Clima TropicalRESUMEN
Recently, knowledge of Neotropical Simuliidae has been accumulating quickly. However, information about supra-specific relationships is scarce and diagnoses of Simulium subgenera are unsatisfactory. To investigate the relationships among Simulium (Chirostilbia) species and test the subgenus monophyly, we performed a cladistic analysis. The ingroup included all species of this subgenus and the outgroup included representatives of the 17 species groups of Neotropical Simulium and three Holarctic species. The study was based on a data matrix with 31 terminal taxa and 45 morphological characteristics of adult, pupa and larva. The phylogenetic analysis under equal weights resulted in eight most-parsimonious trees (length = 178, consistency index = 34, retention index = 67). The monophyly of the S. (Chirostilbia) was not supported in our analysis. The Simulium subpallidum species group was closer to Simulium (Psilopelmia) and Simulium (Ectemnaspis) than to the Simulium pertinax species group. Additionally, we describe the three-dimensional shape of the terminalia of male and female of Simulium (Chirostilbia) for the first time and provide comments about the taxonomic problems involving some species of the subgenus: Simulium acarayense, Simulium papaveroi, S. pertinax, Simulium serranum, Simulium striginotum and S. subpallidum.
Asunto(s)
Filogenia , Simuliidae/clasificación , Animales , Femenino , Masculino , Simuliidae/anatomía & histología , Simuliidae/genéticaRESUMEN
Recently, knowledge of Neotropical Simuliidae has been accumulating quickly. However, information about supra-specific relationships is scarce and diagnoses of Simulium subgenera are unsatisfactory. To investigate the relationships among Simulium (Chirostilbia) species and test the subgenus monophyly, we performed a cladistic analysis. The ingroup included all species of this subgenus and the outgroup included representatives of the 17 species groups of Neotropical Simulium and three Holarctic species. The study was based on a data matrix with 31 terminal taxa and 45 morphological characteristics of adult, pupa and larva. The phylogenetic analysis under equal weights resulted in eight most-parsimonious trees (length = 178, consistency index = 34, retention index = 67). The monophyly of the S. (Chirostilbia) was not supported in our analysis. The Simulium subpallidum species group was closer to Simulium (Psilopelmia) and Simulium (Ectemnaspis) than to the Simulium pertinax species group. Additionally, we describe the three-dimensional shape of the terminalia of male and female of Simulium (Chirostilbia) for the first time and provide comments about the taxonomic problems involving some species of the subgenus: Simulium acarayense, Simulium papaveroi, S. pertinax, Simulium serranum, Simulium striginotum and S. subpallidum.
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Animales , Femenino , Masculino , Filogenia , Simuliidae/clasificación , Simuliidae/anatomía & histología , Simuliidae/genéticaRESUMEN
The Simuliidae fauna from the Santa Catarina state, Brazil, was documented, based primarily on specimens deposited in the collections of the Instituto Oswaldo Cruz, Brazil and the La Plata Museum, Argentina. The results of our survey are organized by mesoregion and by municipality. Of the 51 municipalities where black flies were recorded, 46 represented new unpublished locality records. A total of 29 species belonging to two genera and eight subgenera were found, among which five are new records for the Santa Catarina state. The species recorded are (new records are marked with a *): Lutzsimulium hirticosta, Simuliium (Chirostilbia) acarayense, S. (Chirostilbia) distinctum, S. (Chirostilbia) empascae, S. (Chirostilbia) pertinax, S. (Chirostilbia) riograndense, S. (Chirostilbia) subpallidum, S. (Ectemnaspis) dinellii, S. (Ectemnaspis) lutzianum, S. (Ectemnaspis) perflavum, S. (Hemicnetha) rubrithorax, S. (Inaequalium) botulibranchium, S. (Inaequalium) clavibranchium, S. (Inaequalium) inaequale, S. (Inaequalium) itaunense, S. (Inaequalium) nogueirai, S. (Inaequalium) subclavibranchium, S. (Inaequalium) subnigrum, S. (Inaequalium) travassosi, S. (Notolepria) paraguayense*, S. (Psaroniocompsa) anamariae*, S. (Psaroniocompsa) angrense, S. (Psaroniocompsa) auripellitum, S. (Psaroniocompsa) auristriatum*, S. (Psaroniocompsa) incrustatum, S. (Psaroniocompsa) jujuyense, S. (Psaroniocompsa) limbatum*, S. (Psaroniocompsa) minuanum*, and S. (Thyrsopelma) orbitale.
RESUMEN
The Simuliidae fauna from the Santa Catarina state, Brazil, was documented, based primarily on specimens deposited in the collections of the Instituto Oswaldo Cruz, Brazil and the La Plata Museum, Argentina. The results of our survey are organized by mesoregion and by municipality. Of the 51 municipalities where black flies were recorded, 46 represented new unpublished locality records. A total of 29 species belonging to two genera and eight subgenera were found, among which five are new records for the Santa Catarina state. The species recorded are (new records are marked with a *): Lutzsimulium hirticosta, Simuliium (Chirostilbia) acarayense, S. (Chirostilbia) distinctum, S. (Chirostilbia) empascae, S. (Chirostilbia) pertinax, S. (Chirostilbia) riograndense, S. (Chirostilbia) subpallidum, S. (Ectemnaspis) dinellii, S. (Ectemnaspis) lutzianum, S. (Ectemnaspis) perflavum, S. (Hemicnetha) rubrithorax, S. (Inaequalium) botulibranchium, S. (Inaequalium) clavibranchium, S. (Inaequalium) inaequale, S. (Inaequalium) itaunense, S. (Inaequalium) nogueirai, S. (Inaequalium) subclavibranchium, S. (Inaequalium) subnigrum, S. (Inaequalium) travassosi, S. (Notolepria) paraguayense*, S. (Psaroniocompsa) anamariae*, S. (Psaroniocompsa) angrense, S. (Psaroniocompsa) auripellitum, S. (Psaroniocompsa) auristriatum*, S. (Psaroniocompsa) incrustatum, S. (Psaroniocompsa) jujuyense, S. (Psaroniocompsa) limbatum*, S. (Psaroniocompsa) minuanum*, and S. (Thyrsopelma) orbitale.